Y Combinator vs Chiron
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Y Combinator
Access curated content from Y Combinator, including YouTube videos, podcasts, and essays on startups. It also serves as a mobile client for Hacker News, providing the latest startup news for founders and programmers. YC-funded founders get exclusive access to additional community features.
- Organized YC YouTube videos
- Startup School content
- On-the-go podcast listening
- Hacker News mobile client
- YC founder-only knowledge base
- Bookface feed and messages
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The Y Combinator App is your home for all things YC. It organizes all of YC's YouTube videos, podcasts, and essays. It's also a mobile client for Hacker News, the best startup news source for programmers and technical founders. For founders who have been funded by YC, it has additional features. For everyone: - Organizes all of YC's YouTube videos - the world's best content on startups - All of the content from Startup School - Listen to YC podcasts on the go - Read Hacker News - the best news source for programmers and technical founders For YC founders: - Access the Bookface feed - Access Bookface messages - Read the YC founder-only knowledge base
Chiron
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The teacher that does less so you do more. Chiron is an AI math tutor for iPad. Write your working by hand on a whiteboard. When you need help, Chiron gives you the smallest nudge: a hint or question written directly on the board, leaving you to work out the next step. KEEP THINKING • Get a nudge when you're stuck, with questions that help you decide what to try next • Try an idea, explain your reasoning and make connections yourself • Ask a question out loud and talk through your thinking Learning math takes effort. Chiron is designed to help you stay with a difficult problem and make progress through your own reasoning. BRING YOUR OWN MATH • Photograph a question and start working • Upload your notes or a problem sheet • Work on the math you're already studying, from algebra and trigonometry to calculus and linear algebra Best with an Apple Pencil. Chiron. Keep thinking.
Screenshots
Verdict
The clearest difference is update cadence: Y Combinator at every 5 days against Chiron's every 11 days. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Y Combinator ships an update every 5 days, Chiron every 11 days. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.
| Parameter | Y Combinator | Chiron |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (27 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 27 — better | — |
| Update frequency | Every 5 days — better | Every 11 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.4 | 16.0 — better |
| Further details — not scored | ||
| Size | 100 MB | 241 MB |
| Age rating | 4+ | 4+ |
| Developer | Y Combinator | James Booth |
In-app purchases
Y Combinator
No in-app purchases
Chiron
No in-app purchases
