# Prime Factorization vs Ratio Calculator

The clearest difference is price: Prime Factorization at Free against Ratio Calculator's $4.99. Prime Factorization also leads on update cadence (every 3 months vs every 35 months) and iOS requirement (8.0 vs 12.0). On ads, in-app purchases and device support there is nothing between them.

Prime Factorization is free to download; Ratio Calculator costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Prime Factorization ships an update every 3 months, Ratio Calculator every 35 months. Both last shipped on September 30, 2026.

## The numbers

| Metric | Prime Factorization | Ratio Calculator |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.4 (5 ratings)](https://appshunter.io/ios/app/prime-factorization/id528980227/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 35 months |
| Monetization | Free | — |
| Size | 2 MB | 28 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sohei Mori](https://appshunter.io/developer/528980270) | [Bhavinkumar Satashiya](https://appshunter.io/developer/1361485921) |

## What reviewers say

### Prime Factorization

[App page](https://appshunter.io/ios/app/prime-factorization/id528980227)

This utility app breaks down integers into their prime factors. It also calculates the number and sum of divisors, lists all divisors, and identifies specific number types like prime, perfect, abundant, or deficient.

**Highlights:** Prime factorization of integers, Calculate number of divisors, Sum of divisors calculation, List all divisors, Identify prime numbers, Identify perfect, abundant, deficient numbers

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

**In-app purchases:** none


### Ratio Calculator

[App page](https://appshunter.io/ios/app/ratio-calculator-proportion/id1522863550)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Prime Factorization free?

Prime Factorization is free to download, with no in-app purchases.

### Is Ratio Calculator free?

Ratio Calculator costs $4.99, with no in-app purchases.

### Do Prime Factorization or Ratio Calculator have ads?

Neither Prime Factorization nor Ratio Calculator shows ads.

### Which is updated more often, Prime Factorization or Ratio Calculator?

Prime Factorization ships an update every 3 months, and Ratio Calculator every 35 months. Most recently, Prime Factorization was updated on September 30, 2026 and Ratio Calculator on September 30, 2026.

---

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