# Numberus Prime vs Rondo

The clearest difference is price: Rondo at Free against Numberus Prime's $2.99. Numberus Prime's advantage is in-app purchases (none vs 5) and iOS requirement (13.4 vs 26.0). On ads and device support there is nothing between them.

Rondo is free to download; Numberus Prime costs $2.99 up front. Rondo sells 5 one-off in-app purchases. Numberus Prime asks for nothing beyond the download.

## The numbers

| Metric | Numberus Prime | Rondo |
| --- | --- | --- |
| Price | $2.99 | **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 3 days |
| Monetization | — | Free with in-app purchases |
| Size | 19 MB | 11 MB |
| Requires iOS | **13.4** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Barcelona Code School](https://appshunter.io/developer/1414985237) | [KEN TOMINAGA](https://appshunter.io/developer/975026926) |

## What reviewers say

### Numberus Prime

[App page](https://appshunter.io/ios/app/numberus-prime/id6736878145)

**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 Numberus Prime free?

Numberus Prime costs $2.99, with no in-app purchases.

### Is Rondo free?

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

### Do Numberus Prime or Rondo have ads?

Neither Numberus Prime nor Rondo shows ads.

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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.*