# Calculation vs Reverse Recorder

The clearest difference is price: Calculation at Free against Reverse Recorder's $1.99. Calculation also leads on iOS requirement (16.0 vs 18.6). Reverse Recorder's advantage is ads (none vs shown). On update cadence, in-app purchases and device support there is nothing between them.

Calculation is free to download; Reverse Recorder costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Calculation ships an update every 2 months, Reverse Recorder every 5 weeks. Both last shipped on October 28, 2026.

## The numbers

| Metric | Calculation | Reverse Recorder |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Size | 7 MB | 3 MB |
| Requires iOS | **16.0** | 18.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [SooRyong Hyun](https://appshunter.io/developer/1685604103) | [Science Fiction Inc.](https://appshunter.io/developer/1878601217) |

## What reviewers say

### Calculation

[App page](https://appshunter.io/ios/app/calculation-basic-calculator/id6462632655)

**In-app purchases:** none


### Reverse Recorder

[App page](https://appshunter.io/ios/app/reverse-recorder/id6755784201)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calculation free?

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

### Is Reverse Recorder free?

Reverse Recorder costs $1.99, with no in-app purchases.

### Do Calculation or Reverse Recorder have ads?

Calculation shows ads; Reverse Recorder does not.

### Which is updated more often, Calculation or Reverse Recorder?

Calculation ships an update every 2 months, and Reverse Recorder every 5 weeks. Most recently, Calculation was updated on October 28, 2026 and Reverse Recorder on October 28, 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.*