# Atomas vs Pi

The clearest difference is update cadence: Atomas at monthly against Pi's every 3 months. Atomas also leads on chart position (#175 vs unranked) and iOS requirement (9.0 vs 15.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Atomas sells 5 one-off in-app purchases and Pi sells 6 in-app purchases, starting at $3.99 per year. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for Atomas against 4.7 for Pi. Both are backed by a comparable volume of ratings — 3.4K and 1.7K respectively. Written reviews are what separate them: 94% of Atomas's written reviews are positive against 90% of Pi's.

Atomas ships an update monthly, Pi every 3 months. The most recent releases landed on September 27, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Atomas | Pi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (3.4K ratings)](https://appshunter.io/ios/app/atomas/id953603155/reviews)** | [4.7 (1.7K ratings)](https://appshunter.io/ios/app/pi-the-game/id974805037/reviews) |
| Number of ratings | **3.4K** | 1.7K |
| Positive reviews | **93.9% of reviews** | 90.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#175** | — |
| Size | 33 MB | 9 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Max Gittel](https://appshunter.io/developer/764787722) | [Applorium Ltd](https://appshunter.io/developer/1688522804) |

## What reviewers say

### Atomas

[App page](https://appshunter.io/ios/app/atomas/id953603155)

**Currently charting:** #175 Top Grossing · Trivia (US App Store)

Combine atoms to create new elements in this addictive puzzle game. Strategize to prevent your universe from overflowing and unlock special charms to aid your progress. Compete with friends for the highest score.

**Highlights:** Atom fusion mechanics, Element creation, Chain reactions, Lucky charms, Multiple game modes, Score comparison

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads & Instant Modes Unlock | $0.99 | one-time |
| 2 Antimatter | $1.99 | one-time |
| 5 Antimatter | $2.99 | one-time |
| 10 Antimatter | $4.99 | one-time |
| 12 Antimatter | $4.99 | one-time |

**What reviewers like**

- 🚀 Addictive gameplay
- 👍 Simple and intuitive
- 🔒 No ads or in-app purchases
- 🧠 Helps learn periodic table
- 🎨 Polished and visually appealing

**What reviewers complain about**

- 🐛 Occasional glitches and bugs
- 🤔 Difficulty can feel arbitrary at times
- 🎨 Similar atom colors can be confusing
- 🔍 Lack of clear tutorials or explanations

**Reported bugs**

- Undo button not working as expected
- Game crashing when sharing scores
- Inconsistent atom behavior with certain power-ups

**Requested features**

- More game modes and challenges
- Ability to save progress and sync across devices
- Option to adjust atom colors and sizes
- Achievements and leaderboards


### Pi

[App page](https://appshunter.io/ios/app/pi-the-game/id974805037)

Enhance your Pi memorization with this app. Features include writing your own "Piem," voice mode for reciting digits, performance statistics, and sound effects. Challenge friends and track your progress.

**Highlights:** Write your own Piem, Voice mode for reciting digits, Performance statistics, Sound effects for memorization, Game Center integration, Challenge friends

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pi - The Game Pro | $3.99 | per year |
| Slice of Pie | $3.99 | one-time |
| Upgrade | $3.99 | one-time |
| Pi - The Game Pro | $4.99 | one-time |
| Half a pie | $14.99 | one-time |
| A Whole pie | $29.99 | one-time |

**What reviewers like**

- 🚀 Great memorization tool
- 👍 Simple and intuitive interface
- 💡 Customizable features (e.g., column count)
- 🥳 Engaging and fun way to learn pi
- 🎉 Helps users achieve impressive results quickly

**What reviewers complain about**

- 🔒 Premium features locked behind paywall
- 🐛 Occasional crashes and bugs
- 📢 Frequent review prompts can be annoying
- 🔍 Leaderboard and achievements not always accurate

**Reported bugs**

- Leaderboard and achievements not updating correctly
- Interface issues after certain actions (e.g., unable to exit training mode)
- Purchases not always unlocking premium features

**Requested features**

- Voice recognition mode
- Tolerance for minor mistakes
- Support for other mathematical constants
- Dark mode option


## Frequently asked questions

### Is Atomas free?

Atomas is free to download, with in-app purchases available.

### Is Pi free?

Pi is free to download, with in-app purchases available.

### Which has better reviews, Atomas or Pi?

Atomas is rated higher. Atomas averages 4.8 out of 5 from 3.4K ratings, while Pi averages 4.7 from 1.7K ratings.

### Do Atomas or Pi have ads?

Neither Atomas nor Pi shows ads.

### Which is updated more often, Atomas or Pi?

Atomas ships an update monthly, and Pi every 3 months. Most recently, Atomas was updated on September 27, 2026 and Pi on September 28, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*