# Zero Below Zero — Super hard puzzle game

> Extremely difficult circle-based math puzzle game with a free unlockable content model. (iPhone/iPad app by Omar Fahmy.)

- Source: https://appshunter.io/ios/app/zero-below-zero/id1512598160 (this page in markdown: same URL + `.md`)
- Developer: [Omar Fahmy](https://appshunter.io/developer/1512598159)
- Category: Games, Entertainment, Casual, Puzzle
- Price: Free with in-app purchases
- Rating: 5.00/5 from 6 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.3 · 4 MB
- Languages: American English
- Released: 2020-05-14
- Data updated: 2026-06-01
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/zero-below-zero/id1512598160/reviews.md

## What is Zero Below Zero?

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!

## Key features

- Extremely challenging gameplay
- Unique circle-based puzzles
- Free levels unlockable
- No hints provided
- Inspired by math puzzles

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock all levels | $3.99 | one-time |


## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/zero-below-zero/id1512598160/reviews.md

### 5/5 — I highly recommend

*2022-05-30*

This game is super fun and addictive. A few took a while to complete, and others are even harder to perfect. By far the hardest puzzle game I’ve played on my iPhone. I can’t beat level 25 :(. But I love that there are no ads, I actually have to think, and you don’t have to beat a level to play the next one. You can play any of the first 30 levels once you download it!

**Developer response:** Thanks for your review, I’m glad you’re enjoying the app!

### 5/5 — So much fun! And addictive!

*2020-05-17*

Really fun puzzle app - so addictive to play, and you just want to keep going to break all the levels. The little motivational messages throughout are cool too, highly recommend good way to lose yourself!

### 5/5 — Excellent game

*2020-05-14, version 1.0*

Very interesting new game

### 5/5 — Been looking for a new game like this !

*2020-05-14, version 1.0*

This app is fantastic really challenges your thinking and is so addictive I played for hours on end when I first downloaded. It’s really smartly done

## Frequently asked questions about Zero Below Zero

### What is the main goal of Zero Below Zero?

The main goal of Zero Below Zero is to make each circle reach a value of at least zero. This is achieved through a gazillion possible moves, but only one specific sequence will result in a perfect score.

### How difficult is Zero Below Zero?

Zero Below Zero is described as 'super hard' and 'much more difficult' than its inspirations. The game intentionally offers no hints, contributing to its extreme challenge.

### How can I unlock all levels in Zero Below Zero?

You can unlock all the levels in Zero Below Zero for free by achieving a perfect score on the initial free levels. If you cannot achieve this, you have the option to pay to unlock the remaining levels.

### Does Zero Below Zero have ads?

No, Zero Below Zero is ad-free. The game description explicitly states there are no ads, subscriptions, or tracking included.

### What devices does Zero Below Zero support?

Zero Below Zero is available on iPhone and iPod devices. It is designed for iOS mobile platforms.

### What is the age rating for Zero Below Zero?

Zero Below Zero has an age rating of 4+. This indicates it is suitable for children aged 4 and above.

### How often is Zero Below Zero updated?

The latest version of Zero Below Zero is 1.3.2, last updated on January 1, 2026. This indicates a recent update, suggesting ongoing support and potential future improvements.

### What is the user sentiment for Zero Below Zero?

Based on the provided data, Zero Below Zero has a perfect rating of 5.0 stars from 6 ratings, indicating a highly positive user sentiment among its current players.

## Version history (last 5 releases)

### 1.3.2 — 2026-01-01

This release includes minor compatibility improvements

### 1.3.1 — 2024-01-02

This version fixes an issue with the scissors icon not showing up correctly.

### 1.3.0 — 2022-05-10

If you get a perfect score on the free levels, you now get the rest of the app unlocked for free!

### 1.2.3 — 2021-05-15

This release contains minor performance improvements

### 1.2.2 — 2020-12-08

This release fixes a bug when adding a new edge in the tutorial.

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## More apps by Omar Fahmy

- [Wave Writer](https://appshunter.io/ios/app/wave-writer/id1525282751)
- [AnyLog - Track Anything](https://appshunter.io/ios/app/anylog-track-anything/id1529737113)

All apps by Omar Fahmy: https://appshunter.io/developer/1512598159

## Related topics

[zero below zero](https://appshunter.io/ios/topics/zero-below-zero) · [below zero](https://appshunter.io/ios/topics/below-zero)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*