# ACalcM vs PrimeCalc

The clearest difference is in-app purchases: PrimeCalc at none against ACalcM's 1. PrimeCalc also leads on update cadence (every 5 weeks vs every 8 months) and iOS requirement (12.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. ACalcM sells 1 one-off in-app purchase. PrimeCalc asks for nothing beyond the download.

ACalcM ships an update every 8 months, PrimeCalc every 5 weeks. The most recent releases landed on September 23, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | ACalcM | PrimeCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (26 ratings)](https://appshunter.io/ios/app/acalcm/id605657598/reviews)** | — |
| Number of ratings | **26** | — |
| Positive reviews | 90.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 8 months | **Every 5 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 13 MB | 12 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Asoft.iOS](https://appshunter.io/developer/562152712) | [Yutaka Nakao](https://appshunter.io/developer/1303008060) |

## What reviewers say

### ACalcM

[App page](https://appshunter.io/ios/app/acalcm/id605657598)

This calculator app enhances standard functionality with an editable list to track numbers and operators. It allows for easy modification of entries, row insertion, and calculation sharing via email. Advanced features include memory functions, rounding options, and design customization.

**Highlights:** Editable calculation list, Memory function, Row insert function, Email calculation results, Rounding function, Design customization

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


### PrimeCalc

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ACalcM free?

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

### Is PrimeCalc free?

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

### Do ACalcM or PrimeCalc have ads?

Both ACalcM and PrimeCalc show ads.

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

ACalcM ships an update every 8 months, and PrimeCalc every 5 weeks. Most recently, ACalcM was updated on September 23, 2026 and PrimeCalc on September 10, 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.*