# Prime Numberist vs Puchi Bubble

The clearest difference is in-app purchases: Puchi Bubble at none against Prime Numberist's 3. Puchi Bubble also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 6 weeks). Prime Numberist's advantage is iOS requirement (12.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. Prime Numberist sells 3 one-off in-app purchases. Puchi Bubble asks for nothing beyond the download.

Prime Numberist ships an update every 6 weeks, Puchi Bubble every 2 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Prime Numberist | Puchi Bubble |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/prime-numberist/id1555469310/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 123 MB | 30 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Masato Niizeki](https://appshunter.io/developer/1486150226) | [INGYU EUM](https://appshunter.io/developer/1886925606) |

## What reviewers say

### Prime Numberist

[App page](https://appshunter.io/ios/app/prime-numberist/id1555469310)

A simple game where you quickly identify prime numbers as they fall. Tap left for primes and right for non-primes to achieve high scores and combos. It's a fun way to practice prime number recognition in your spare time.

**Highlights:** Identify prime numbers, Fast-paced gameplay, High score ranking, Combo system, Practice prime factorization

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 Expert mode tickets | $0.99 | one-time |
| 55 Expert mode tickets | $0.99 | one-time |
| Unlock expert mode and off AD | $1.99 | one-time |


### Puchi Bubble

[App page](https://appshunter.io/ios/app/puchi-bubble/id6772180625)

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

**In-app purchases:** none


## Frequently asked questions

### Is Prime Numberist free?

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

### Is Puchi Bubble free?

Puchi Bubble is free to download, with no in-app purchases.

### Do Prime Numberist or Puchi Bubble have ads?

Prime Numberist shows ads; Puchi Bubble does not.

### Which is updated more often, Prime Numberist or Puchi Bubble?

Prime Numberist ships an update every 6 weeks, and Puchi Bubble every 2 weeks. Most recently, Prime Numberist was updated on October 24, 2026 and Puchi Bubble on October 25, 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.*