# Calculator vs RedoCalc

The clearest difference is in-app purchases: RedoCalc at none against Calculator's 1. RedoCalc also leads on update cadence (every 3 days vs every 2 months). Calculator's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 18.0). On price and ads there is nothing between them.

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

Calculator ships an update every 2 months, RedoCalc every 3 days. The most recent releases landed on November 2, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Calculator | RedoCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (10 ratings)](https://appshunter.io/ios/app/calculator-calcpro/id1321874059/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 3 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hideki Ogawa](https://appshunter.io/developer/498921566) | [Toshiyuki Kuwabara](https://appshunter.io/developer/1649322074) |

## What reviewers say

### Calculator

[App page](https://appshunter.io/ios/app/calculator-calcpro/id1321874059)

This utility app allows users to perform calculations and view the formulas used. It offers the ability to edit past calculations and share results via email or memos. An optional purchase can remove advertisements.

**Highlights:** View calculation formulas, Edit past formulas, Share calculations, Ad-free option via purchase, Output to memos or email

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove in-app ads | $2.99 | one-time |


### RedoCalc

[App page](https://appshunter.io/ios/app/redocalc/id6743318834)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calculator free?

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

### Is RedoCalc free?

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

### Do Calculator or RedoCalc have ads?

Both Calculator and RedoCalc show ads.

### Which is updated more often, Calculator or RedoCalc?

Calculator ships an update every 2 months, and RedoCalc every 3 days. Most recently, Calculator was updated on November 2, 2026 and RedoCalc on October 25, 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.*