
Rectangle
Alcove
Forehead
NotchNook
Hidden Bar
TheBoringNotch
Stats
Makes the notch disappear like a ninja.

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.

Which is more popular?
Based on our record, TopNotch App seems to be more popular. It has been mentioned 43 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | topnotch.app | diffyn.com |
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What each product offers, as listed by its team.


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The Ultimate Prompt Tool for Creators – Visualize & Organize with Diffyn
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing TopNotch App and Diffyn.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
Diffyn's answer:
React, Next.js, POSTGRESQL
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
Share your experience with using TopNotch App and Diffyn. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


I edit my wallpapers to include a black bar at the top, so I rarely notice the notch. Eg: https://celsoazevedo.com/files/2025/macos-bar.png Got the idea from the Top Notch app, which stopped working a while ago: https://topnotch.app/. - Source: Hacker News / 12 months ago
That's an okay workaround, but you lose part of your screen and create a thick top bezel. As a laptop user, I want to use all available space, so what I do is to use https://topnotch.app/ which makes the top bar black and until now I was... - Source: Hacker News / over 2 years ago
Here’s a handy free utility to automate this for you: https://topnotch.app Personally I never see the desktop background so I just set desktop to Black, it’s perfect for me. - Source: Hacker News / over 2 years ago
Tracking Diffyn since Jun 2025.
When comparing TopNotch App and Diffyn, you can also consider the following products.

Window management app based on Spectacle, written in Swift.
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I saw some people complain about the notch (I like it but tastes differ), so I made a little utility that makes the menu bar black so the Notch fades away in the background.
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A ultra-light MacOS utility that helps hide menu bar icons.
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Open source Dynamic Island for your Mac's Notch
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