Zero Below Zero vs Cognito
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Zero Below Zero
A challenging puzzle game with simple mechanics but extreme difficulty. Achieve a perfect score on free levels to unlock the rest at no cost. No hints are provided, requiring strategic thinking to solve each unique circle-based puzzle.
- Extremely challenging gameplay
- Unique circle-based puzzles
- Free levels unlockable
- No hints provided
- Inspired by math puzzles
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Don’t let the cute graphics deceive you - this game is HARD. It’s so difficult, that if you get a perfect score on the free levels, you get the rest of the levels for free. The goal sounds easy - all you have to do is make each circle at least zero. The trouble is there are gazillions of moves you can make, and just one will give you a perfect score. Oh, and there are no hints. There are also no ads, subscriptions, tracking, or anything else you wouldn’t want. If you can’t achieve a perfect score on the free levels, you can always admit defeat and pay to unlock the other levels ;) This game is inspired by the dollar game maths puzzle as seen on Numberphile. Don’t expect that to help you though - Zero Below Zero has been made much more difficult!
Cognito
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Cognito Brain Training – Play Brain Games with friends, Train Your Brain, Improve Memory & Focus, Boost Your Mind Cognito is a fun and engaging social brain training app designed to enhance memory, focus, and cognitive agility. Play a variety of games with other users and your friends to challenge your brain. Track your progress and compete with users in the global leaderboard. Auto-Renewable Subscriptions: - Cognito Pro Monthly: $1.19/month - Cognito Pro Yearly: $4.99/year Manage Your Subscription: Subscriptions can be managed or cancelled at any time via your Apple ID account settings. Legal & Privacy: Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://cognito.games/privacy-policy Unlock your full potential with Cognito Pro and take your brain training to the next level!
Screenshots
Verdict
The clearest difference is update cadence: Cognito at every 3 weeks against Zero Below Zero's every 6 months. 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. Zero Below Zero sells 1 one-off in-app purchase and Cognito sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Zero Below Zero ships an update every 6 months, Cognito every 3 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | Zero Below Zero | Cognito |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 6 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.3 | 13.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 123 MB |
| Age rating | 4+ | 4+ |
| Developer | Omar Fahmy | Pushp Raj Saurabh |
In-app purchases
Zero Below Zero
- Unlock all levels$3.99
Cognito
- Cognito Pro Membership- Monthly$4.991 Month
- Cognito Pro Membership- Yearly$29.991 Year
Questions
Is Zero Below Zero free?
Is Cognito free?
Do Zero Below Zero or Cognito have ads?
Which is updated more often, Zero Below Zero or Cognito?
Other comparisons
