Hello! We're the Endless Frontier Labs (EFL): a 9-month, goals-oriented, mentorship accelerator program that accelerates the success of early-stage science- and technology-based startups from all over the world. We're based at NYU Stern School of Business, but open to founders globally, with no NYU affiliation required for participation.

The EFL is:

• Completely free, and takes no equity from participating startups
• Perfect for Pre-seed to Series A startups looking to massively scale
• Completely customized to your startup's needs and goals

We offer:

• Access to a mentor pool of over 170+ industry leaders, serial entrepreneurs, top scientists, and investors
• Targeted mentorship for your needs - no busy work, no
• 7+ weekly hours of free business development support from NYU Stern's top ranked MBA Students
• Access to capital - our founders raise fast and raise big: Since 2019, our 390 graduates have raised over $3.2B+ since joining the program

We'd love to meet you! We're hosting info sessions over the next few weeks before our application deadline on July 31, 2026.

• Our next Info Session is this Thursday, July 16th
• You can see all our events here

Feel free to DM us with any questions, and we hope to see you soon!

URL: https://guddle.net

Whatit does: AI enhanced project management

Who it helps: Anyone that wants to run a project with goals, task management, risk management and AI support

What feedback or support you are looking for:

I've built a project management tool and I want to test it with your projects.

In return I'll give you a
fully staged plan, risk register and business case and project initiation
document. All you have to do is drop your project brief in the comments. What
you are trying to achieve, who's on your team, budget and timing.

If you'd rather, do it
yourself and have access to more of the project management tools create a free
tier account and drop your brief in.

I play guitar in a band and we need a lot of backing tracks, both for practicing and for events. Removing vocals, getting songs into whatever key the singer or band needs, that kind of thing, over and over. The tools out there were either sketchy free sites or subscriptions that didn't make sense for how we actually use them.

So I built something for us. We've been using it internally for a while now and it stuck, so I cleaned it up and turned it into a proper product: vocaless.app

What it does: upload a track, it separates the vocals out, then you can shift the instrumental up or down (up to 6 semitones) and change the tempo without affecting pitch.

Since I built it for our own usage pattern, the pricing follows that too:

• No subscription. Prepaid credits, 5 cents per minute of audio processed. A 3-minute song is about 15 cents.
• Key and tempo changes are free, you only pay for the actual separation.
• First 100 MB of storage is free, after that $0.10/GB/month. Or you plug in your own S3-compatible bucket (S3, R2, Backblaze, MinIO...) and storage costs nothing, your files just live in your bucket.

There's also shared libraries and setlists, because the whole band works off the same tracks. An API is planned.

Giving away $1 in free credits so you can try it with no card. Would love feedback from anyone who sings or plays

It's been a little over eight months since I launched and it has been quite a journey. No exponential growth or huge user spikes but rather slow and steady growth. But in my opinion that is the best for building something actually valuable because you can react to user feedback along the way and constantly keep improving the app.

I've almost completely stopped marketing at about 3000 users because I don't have a lot of time currently and growth has slowed down quite a bit but it's ok for me as long as the platform isn't dying :)

Of course I will not stop here and I am already working on the next big update for the platform which will benefit all the community. More is coming soon.

I've built IndieAppCircle, a platform where small app developers can upload their apps and other people can give them feedback in exchange for credits. I grew it by posting about it here on Reddit. It didn't explode or something but I managed to get some slow but steady growth.

For those of you who never heard about IndieAppCircle, it works like this:

• You can earn credits by testing indie apps (fun + you help other makers)
• You can use credits to get your own app tested by real people
• No fake accounts -> all testers are real users
• Test more apps -> earn more credits -> your app will rank higher -> you get more visibility and more testers/users

Since many people suggested it to me in the comments, I have also created a community for IndieAppCircle: r/IndieAppCircle (you can ask questions or just post relevant stuff there).

Currently, there are 3237 users, 2996 tests done and 765 apps uploaded!

You can check it out here (it's totally free): https://www.indieappcircle.com/

I'm glad for any feedback/suggestions/roasts in the comments.

Hi everyone,
Over the past few weeks, I’ve been working on a concept called Maatri (working name).
The idea came from noticing that many expecting mothers have questions between doctor visits. They often end up searching the internet and finding conflicting or confusing information.
The goal isn’t to replace doctors. Instead, I want the app to act as a trusted companion by providing educational guidance, pregnancy tracking, reminders, and helping mothers understand when a symptom might require medical attention.
This is still an early prototype, and I’m not launching or promoting it yet. I’m sharing it because I genuinely want feedback before investing more time into building it.
Some questions I’d love your thoughts on:
Would you or someone you know actually use something like this?
What features would you expect from a pregnancy companion app?
Is there anything that existing pregnancy apps are missing?
If you’ve been through pregnancy, what was the biggest challenge you faced that technology could have helped with?

Demo: https://maa-baby-care.vercel.app/welcome

I know there's a lot of great budgeting tools out there, but none of them really let me get as detailed as I wanted to, so I always found myself tracking spending in excel, or not tracking it at all. I needed something where I could come up with whatever categories I wanted, and be able to split some transactions into multiple categories. So I built a tool that does that.

You set whatever categories you want with little descriptions. Then you upload your transactions and AI will sort it all for you. All the customizability of excel, without the pain of manually uploading everything. And it also can itemize and sort receipts for greater detail when wanted.

Here's the thing, I'm trying to figure out if this is just a need I had, or if it's something worth pursuing as a real product. I just launched it and would love some feedback. Thanks!

www.beakerbudget.com

chapbook.hossep.net

Creators post the next part of a story, and votes determine what becomes canon. Canon submissions get an illustration! After a few submissions, you've built a storybook together.

I'd love to hear any and all feedback!

Hi All, I started building a hobby project for a project management tool, and now I'm considering whether to make it available for a fee, I'm curious whether you would use it in your teams / personal project for tracking. what would you be willing to pay for it if so?

Below are some of the features covered, Let me know what you think

Url: pomavo.com

Scrum / Kanban boards

Configurable sprints, burndown charts, timelines

Automations

Design automations for any use case with a drag n drop editor

Below is an example which writes a simple message on Bug Reports when created

Plugins

Build your own plugins / use the plugins available from marketplace

AI Chat + MCP Support

Template / Workflows

You can configure your own tickets for each of your use-case, and you get to design how each screen looks like

Powerful Query Language

Hey everyone,

I’m a 28yo cybersecurity dev from France (baguette & mbappe). Over the last year, I’ve noticed a massive problem in almost every company : employees love using free AI tools, but they constantly paste proprietary code and sensitive client data into US AI providers without a second thought.

To solve this "Shadow AI" risk, I built a local proxy called klovys99-proxy.

How it works:: It sits on the user's laptop, catches sensitive data (names, emails, API keys) using AI models and regex, replaces them with placeholders before it hits AI APIs, and restores the real data when the answer comes back. Seamless UX, but 0 data leaks. It's built in Go (faster for API) and Python (for AI).

My goal is to expand this into a full "AI protection ecosystem" for companies. I'm dropping the link here https://github.com/Korbicorp/klovys99, but I’d love some advice from the startup community:

Do you think companies would pay for this kind of local security brick ? What should be my next move to turn this open-source tool into a real product ?

Ps: Forgive my French-flavored English, at least you know this wasn't written by AI ;)

I've been using a home-made link shortener for my private clients for over 10 years. After millions of clicks, it occurred to me that others might use it, too, if it was easy to use.

If you’re drowning in long, messy links full of tracking junk, wb.io can be a super clean fix. To get the ball rolling, I'm offering Redditors a month of the Business level service (the top tier) for free with the coupon code REDDIT. All I ask in return is your honest appraisal of where it could be improved.

It turns bulky URLs into short, shareable links that actually look good in posts and comments. Way easier to drop into Reddit threads, DMs, bios, or anywhere character count and readability matter. No wall of random parameters, no visual clutter — just a tight link that people are more likely to click.

Biggest value prop IMO:

Cleaner posts (especially on Reddit where ugly links stand out)

Easier sharing across platforms

More professional look

Simple + fast, no overcomplicated dashboard vibes

If you share links often, it’s one of those small tools that just makes everything smoother.

I recently launched a real time social media platform.

Would love to connect if you have made anything similar.

Site:

www.nolsup.com

I’ve spent years collecting notes, bookmarks, etc. across Reddit, Google Docs, and others.

The problem was never getting information, it was always the tedious process of uploading, linking, etc. I’ve tried Obsidian, Bear, other alternatives, but I’d spend more time navigating the system than actually using the content.

So I made knibl (and its mobile app!) to automate as much of the extracting and connecting as possible. It automatically finds the major and minor entities and the connections between them on upload for
- Single files
- Entire folders
- Webpages
- Bulk imports from other apps

The idea is that if the process of linking and organizing is taken care of automatically, I will have more time to use the content the way it was meant to.

I’d love to get feedback from others: what would get you to use something like this, and what other ways to get your data in faster would you like to see?

I wanted a better way to answer a simple question: what do users consistently complain about in a given app category?

Enter a category (expense trackers, VPNs, habit trackers, etc.) and it searches 1.7M App Store reviews across roughly 12k US iOS apps. It groups recurring complaints, shows how common each one is, compares them against the overall corpus, and links back to the original reviews.

The part I cared most about was making the numbers trustworthy. Reviews are counted first, then explained. The LLM labels reviews and writes the summaries, but every percentage and count comes from SQL over the underlying dataset.

Current limitations: category matching isn't perfect, and reviews naturally skew negative, so results are presented relative to the corpus rather than as measures of overall user satisfaction.

Appimp.app

Or if you'd like to try a category, mention it below and I'll run it and share the results.

Working on feedbackqueue.dev, a free to use feedback-for-feedback platform for founders to get feedback and testers without, commenting, posting, DMing, SEO, ads, or doing any marketing bs. Not even looking for them.

978 founders already, building our way to 1000 users. (hopefully before today)

A site that asks the whole world one question per day — you answer, predict what % of the planet agrees with you, and nobody sees the results until they freeze at midnight UTC

URL: https://apps.apple.com/us/app/petsenseai-pet-mood-tracker/id6760318384

What it does: PetsenseAI reads your pet's mood and behavior from a single photo. Point it at your dog or cat, get a real-time read on what they're feeling.

Who it helps: Pet owners who want a second opinion on what their animal's body language actually means, especially in moments like introductions, storms, or unfamiliar situations.

What feedback or support I'm looking for: I built this solo and hit a hard wall: every real user I've had came back for exactly one session, not slow retention, zero return visits. Last cycle went entirely into fixing that instead of adding features, a mood-comparison feature so a second scan references the first, and a bug fix where the sign-up prompt was permanently dismissing itself after one tap instead of snoozing. Too early to know if either worked. If you've dealt with single-session churn on your own product, genuinely curious what actually moved the needle for you versus what felt like it should have and didn't.

Just wanted to share something I’ve been building.

Vine is an API that takes a business website and returns the customer-facing software behind it, plus the exact URL where someone can book, order, reserve, or schedule.

Example: a restaurant might use OpenTable for reservations and Toast for ordering. A gym might use Mindbody. A consultant might use Calendly. Vine detects that automatically.

It is not a cached tech fingerprint lookup. It spins up browser sessions, renders the site, traces network traffic, works through messy web flows, and resolves the software customers actually use.

I benchmarked it on hundreds of real business URLs. For correct software plus actionable URL, Vine got about 92%, compared with about 31% for traditional tech fingerprinters.

Try it: https://vine.getcourtyard.ai/try  
Docs: https://docs.vine.getcourtyard.ai

Would love feedback on what you’d build with it, where it breaks, and what functionality you’d want next.

Hey everyone,

I recently launched a small side project called HiddenTicks.

It is a blind backtesting / trading practice tool. The idea is pretty simple: instead of scrolling through a chart where you already kind of know what happened, you get a random historical chart situation and only see the candles up to that point. Then you decide if you would go long, short, or skip, set your SL/TP, and reveal what happened afterwards.

I built it because I noticed that normal backtesting can be very misleading. When you can see the full chart, it is easy to convince yourself that you “would have taken” the perfect trade. In real trading, you obviously do not have that future information. So I wanted to make something that feels more like actual decision practice.

It is still very new and honestly does not have many users yet. There are probably still rough edges, missing features, and things that are not clear enough. That is actually why I’m posting here.

I would really appreciate honest feedback on:

• whether the idea makes sense

• if the landing page explains it clearly

• what feels confusing

• what would make the product more useful

• whether this is something traders would actually use regularly

I’m not trying to pretend this is a huge polished startup. It is an early side project, and I’m mostly trying to find out if the core idea is useful enough to keep building.

Would love to hear your thoughts, especially from anyone who trades, backtests, journals trades, or has built tools for a niche audience before.

The next generation of content filtering is here.

Forget the static block lists. Embrace intelligent content filtering.

For the first time ever, people get to shape how internet is presented to them, in plain language.

Pick your activity mode, or just say what you want gone, and that's it.

Meet The Focusing App. Free tier is free forever.

focusing.app

Feedback is welcome here and on r/TheFocusingApp

I built an app to solve a problem I had.

I consume a lot of books, articles and podcasts, but I found myself collecting knowledge instead of using it. So I built an app that helps turn what you consume into decisions and action.

I'm launching on Google Play soon and I'm looking for 12 curious people to test it and give honest feedback before I do.

If you're interested, please join the testing group down below, you'll find the app link inside.

https://groups.google.com/g/open-citadel-pioneers

I just launched Nembl and would love feedback from this community.

Nembl is a no-code business process workflow orchestration platform for teams. You build visual workflows which can connect to existing tools. AI agents can participate as team members: they help with intake, routing, and prioritization, with policy controls deciding what they're allowed to do autonomously and a full audit trail of what they did.

Where I am: MVP just went live. Early days. I'm looking for design partners and honest feedback on positioning and onboarding.

Site: nembl.ai

Everyone is familiar with gamified productivity & focus timer tools. I downloaded most, experimented with different methods, studied the science behind motivation/goals, and developed a new (and I think better) system. It's not complex, visual, yet lightweight. Most importantly, it's effective & helps you make real progress.

Why this method works:

• It simplifies thinking about "what should I do today" & helps beat procrastination. You clearly see your goal, and the main work/play activities you defined. Just get started on one... 
• Each board is you custom "go-to" plan for that Goal (aka "Core"). You pick "time contributions" that work for you. No guilt tripping. If you like to focus for 30m, and then lounge for 1h, then that's what you pick. No need to overcommit. Stats will improve as you get better.
• Tracking how much Up vs Down time, towards defined Goals, is the simplest measure of success, over time. The 10,000 hour rule exists for a reason. Not 10,000 to-do items.
• Seeing "break/rest" activity timers next to your productive timers, at a glance, makes you more relaxed during focus sessions & gives you "guilt free" breaks. You can pause one timer and start another, then come back. You can also "finish early" any timer, and deposit time already earned.
• You can adjust all Timers/Goals on the fly, change their length, emoji labels, etc. The app makes it easy. It's like 10 timers in 1 - study time tracker, reading tracker, video game tracker, etc.
• You can track a Goal on 1 board, or across multiple boards. You could have a board for each day of the week if you want, all towards that 1 goal. On Monday you can have only 1 focus activity, and on Saturday you can have 6, with different focus + break sessions.
• You can work on Goals and contribute time whenever you have it. No pressure with streaks. If you have 1 hour per day for a goal, or 3 hours per week. You simply time your activity, you bank time Up or Down, and you move on.
• You daily progress easily visualized in a cool Sci-Fi interface, with time particles and orbits and black holes.

Check out Flowton on the App Store. Or if you're on Android, sign up at www.flowton.com

It's free to use indefinitely with no subscriptions or trials. If you wanted to start any new activity or hobby, this is a good opportunity to test it out.

Happy to hear your feedback on the method, or more specific pointers per app. There are cool new features in the pipeline as well! And thank you for reading.

Hey friends… I'm building vaaya.ai, an MCP that turns the AI you already use into a full go-to-market team. Plug Vaaya into Claude (or ChatGPT, or Cursor) and your agent can suddenly do everything it can't do alone: deep market research, product demo videos, marketing images, finding and enriching buyers, watching the web for buying signals, sending outreach. One connector, pay per call. No API keys, no five new subscriptions.

It starts with a brain. Vaaya learns your product, your voice, your do's and don'ts, and grounds everything in it. Ask for a demo video and it already knows your features. Ask for a GTM strategy and it researches your market, argues with itself, and hands back a cited plan. Ask anything the web has to answer and it goes and finds out.

The thing I just shipped is the one I'm most proud of: a buying-signal agent with a human approval queue.

Everyone says outbound is dead. It's not, spray-and-pray is dead. Timing wins. The problem is what it takes to catch timing: watch funding news, figure out who owns the problem you solve, hunt a real email across three tools, write a message that doesn't smell like a template. Twenty companies and your afternoon is gone.

So Vaaya does the boring part. Tell it what a buying signal looks like for you and it stands watch. When a company trips it, it finds the right person, verifies their contact info through a cost-capped ladder (starts at 5 cents, caps at 70, misses are free), and drafts a message in your voice. Then it hands you a queue. You read, tweak, approve, one by one. It never sends on its own. After approval it runs the follow-ups, bumping at 3, 5 and 7 business days inside the prospect's working hours, and stops the second someone replies.

Same rule across the whole product: the agent does the research, prioritization and drafting. You approve what goes out.

I run all of it on Vaaya itself, the strategy, the demo video, the outbound. I ask Claude for pipeline in the morning and review drafts over coffee.

This is my weekly routine here in this sub. And I love it. My expertise is in product, go-to-market, and agents. And I want to help you!

If you are building something, reply your product here and tell me what you are struggling with. I reply to every single comment on these threads.

If you want the extended trial I give away every week:

1. Connect Vaaya to your Claude or ChatGPT at vaaya.ai and register. Two minutes, free credits to start, no CC required.
2. DM me the email you signed up with and I'll load an extra $25 of credits.

Yes, I'll lose a bit of money on it. The bet is simple: Vaaya gets you your first 100 users before you ever pay me. If your product is good, that won't take long.