# PrimeCalc vs Divisors

The clearest difference is ads: Divisors at none against PrimeCalc's shown. Divisors also leads on update cadence (weekly vs every 5 weeks). PrimeCalc's advantage is iOS requirement (12.0 vs 16.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PrimeCalc ships an update every 5 weeks, Divisors weekly. The most recent releases landed on September 10, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | PrimeCalc | Divisors |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Weekly** |
| Size | 12 MB | 7 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Yutaka Nakao](https://appshunter.io/developer/1303008060) | [DORU SULAR](https://appshunter.io/developer/1675124003) |

## What reviewers say

### PrimeCalc

[App page](https://appshunter.io/ios/app/primecalc-modprime-factor/id1332239791)

**Features:** macOS Compatibility

**In-app purchases:** none


### Divisors

[App page](https://appshunter.io/ios/app/divisors/id6446118285)

**In-app purchases:** none


## Frequently asked questions

### Is PrimeCalc free?

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

### Is Divisors free?

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

### Do PrimeCalc or Divisors have ads?

PrimeCalc shows ads; Divisors does not.

### Which is updated more often, PrimeCalc or Divisors?

PrimeCalc ships an update every 5 weeks, and Divisors weekly. Most recently, PrimeCalc was updated on September 10, 2026 and Divisors on September 20, 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.*