# Beautiful Numbers vs Rondo

The clearest difference is in-app purchases: Beautiful Numbers at none against Rondo's 5. Beautiful Numbers also leads on iOS requirement (18.4 vs 26.0). Rondo's advantage is update cadence (every 3 days vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Rondo sells 5 one-off in-app purchases. Beautiful Numbers asks for nothing beyond the download.

Beautiful Numbers ships an update every 6 weeks, Rondo every 3 days. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Beautiful Numbers | Rondo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rondo-prime-factorization/id6784029039/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 8 MB | 11 MB |
| Requires iOS | **18.4** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Tomasz Rygula](https://appshunter.io/developer/879228654) | [KEN TOMINAGA](https://appshunter.io/developer/975026926) |

## What reviewers say

### Beautiful Numbers

[App page](https://appshunter.io/ios/app/beautiful-numbers/id6747298785)

**Features:** macOS Compatibility

**In-app purchases:** none


### Rondo

[App page](https://appshunter.io/ios/app/rondo-prime-factorization/id6784029039)

Explore the mathematical beauty of numbers through interactive, animated factorization diagrams. Watch numbers dance, hear their unique songs, and even visualize them in augmented reality. Discover the stories behind special numbers and personalize your experience with customizable palettes and sounds.

**Highlights:** Animated factorization diagrams, Augmented reality number visualization, Auditory representation of factors, Interactive number exploration, Field Guide for special numbers, Home screen and Apple Watch widgets, Customizable color palettes and sounds

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip a prime · 199 | $1.99 | one-time |
| Tip a prime · 499 | $4.99 | one-time |
| Rondo Pro | $4.99 | one-time |
| Tip a prime · 599 | $5.99 | one-time |
| Tip a prime · 1999 | $19.99 | one-time |


## Frequently asked questions

### Is Beautiful Numbers free?

Beautiful Numbers is free to download, with no in-app purchases.

### Is Rondo free?

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

### Do Beautiful Numbers or Rondo have ads?

Neither Beautiful Numbers nor Rondo shows ads.

### Which is updated more often, Beautiful Numbers or Rondo?

Beautiful Numbers ships an update every 6 weeks, and Rondo every 3 days. Most recently, Beautiful Numbers was updated on October 14, 2026 and Rondo on October 24, 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.*