# Incredible Numbers! vs Prime Factorization Deluxe

The clearest difference is review sentiment: Incredible Numbers! at 73% against Prime Factorization Deluxe's 0%. Incredible Numbers! also leads on rating (5.0 vs 1.0) and update cadence (every 10 months vs every 38 months). Prime Factorization Deluxe's advantage is price ($1.99 vs $6.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

Incredible Numbers! costs $6.99 and Prime Factorization Deluxe $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Incredible Numbers! holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: Incredible Numbers! has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 73% of Incredible Numbers!'s written reviews are positive against 0% of Prime Factorization Deluxe's.

Incredible Numbers! ships an update every 10 months, Prime Factorization Deluxe every 38 months. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Incredible Numbers! | Prime Factorization Deluxe |
| --- | --- | --- |
| Price | $6.99 | **$1.99** |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/incredible-numbers/id824146218/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/prime-factorization-deluxe/id971807388/reviews) |
| Number of ratings | **9** | 1 |
| Positive reviews | **73.1% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 months** | Every 38 months |
| Monetization | Paid | Paid |
| Size | 107 MB | 15 MB |
| Requires iOS | 12.1 | **12.0** |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [NatureGuides Ltd.](https://appshunter.io/developer/310574314) | [Ventura Educational Systems](https://appshunter.io/developer/371324172) |

## What reviewers say

### Incredible Numbers!

[App page](https://appshunter.io/ios/app/incredible-numbers/id824146218)

Explore the hidden beauty of mathematics with interactive examples and puzzles. Discover concepts like infinity, Pi, and prime numbers through engaging articles and demonstrations crafted by a renowned professor. Uncover the mathematical patterns in nature, music, and codes.

**Highlights:** 23 articles by Professor Ian Stewart, 71 interactive demonstrations, 15 mathematical puzzles, Topics: Infinity, Pi, Music, Codes, Nature, Primes, Polygons, Factorials, Interactive examples and simulations, Focus on the beauty of mathematics

**Features:** macOS Compatibility

**In-app purchases:** none


### Prime Factorization Deluxe

[App page](https://appshunter.io/ios/app/prime-factorization-deluxe/id971807388)

Explore prime factorization, GCF, and LCM with an interactive factor tree. Select numbers up to 100 to build factor trees and learn mathematical concepts visually. Ideal for students learning number theory.

**Highlights:** Interactive prime factorization tool, Factor tree visualization, Greatest Common Factor (GCF) calculation, Least Common Multiple (LCM) calculation, Number selection up to 100, Visual distinction between prime and composite numbers

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Incredible Numbers! free?

Incredible Numbers! costs $6.99, with no in-app purchases.

### Is Prime Factorization Deluxe free?

Prime Factorization Deluxe costs $1.99, with no in-app purchases.

### Which has better reviews, Incredible Numbers! or Prime Factorization Deluxe?

Incredible Numbers! is rated higher. Incredible Numbers! averages 5.0 out of 5 from 9 ratings, while Prime Factorization Deluxe averages 1.0 from 1 ratings.

### Do Incredible Numbers! or Prime Factorization Deluxe have ads?

Neither Incredible Numbers! nor Prime Factorization Deluxe shows ads.

### Which is updated more often, Incredible Numbers! or Prime Factorization Deluxe?

Incredible Numbers! ships an update every 10 months, and Prime Factorization Deluxe every 38 months. Most recently, Incredible Numbers! was updated on October 19, 2026 and Prime Factorization Deluxe 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.*