Y Combinator vs Zetamac Arithmetic Practice
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
Zetamac Arithmetic Practice
This app offers mental math practice tailored for quantitative finance professionals. It focuses on improving calculation speed and accuracy for complex numerical problems.
- Mental math practice
- Quantitative finance focus
- Calculation speed improvement
- Accuracy enhancement
- Numerical problem solving
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Zetamac - A mental math practice app used in the Quantitative Finance world.
Screenshots
Verdict
The clearest difference is review sentiment: Zetamac Arithmetic Practice at 83% against Y Combinator's 33%. Zetamac Arithmetic Practice also leads on rating (4.7 vs 4.1) and update cadence (daily vs every 5 days). On price, ratings volume, ads and in-app purchases 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.
Zetamac Arithmetic Practice holds the better App Store score, 4.7 against 4.1. Both are backed by a comparable volume of ratings — 27 and 19 respectively. Written reviews point the same way: 33% of Y Combinator's written reviews are positive against 83% of Zetamac Arithmetic Practice's.
Y Combinator ships an update every 5 days, Zetamac Arithmetic Practice daily. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.
| Parameter | Y Combinator | Zetamac Arithmetic Practice |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (27 ratings) | 4.7 (19 ratings) — better |
| Positive reviews | 33.3% of reviews | 83.3% of reviews — better |
| Number of ratings | 27 — better | 19 |
| Update frequency | Every 5 days | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.4 — better | 17.5 |
| Further details — not scored | ||
| Size | 100 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Y Combinator | Joseph Ma |
Customer experience
Y Combinator
Zetamac Arithmetic Practice
In-app purchases
Y Combinator
No in-app purchases
Zetamac Arithmetic Practice
No in-app purchases
Questions
Is Y Combinator free?
Is Zetamac Arithmetic Practice free?
Which has better reviews, Y Combinator or Zetamac Arithmetic Practice?
Do Y Combinator or Zetamac Arithmetic Practice have ads?
Which is updated more often, Y Combinator or Zetamac Arithmetic Practice?
Other comparisons
