# Calc The App vs Octodecuple Calc

The clearest difference is in-app purchases: Octodecuple Calc at none against Calc The App's 3. Octodecuple Calc also leads on update cadence (every 2 weeks vs every 25 months). Calc The App's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Calc The App sells 3 one-off in-app purchases. Octodecuple Calc asks for nothing beyond the download.

Calc The App ships an update every 25 months, Octodecuple Calc every 2 weeks. The most recent releases landed on October 4, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Calc The App | Octodecuple Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 25 months | **Every 2 weeks** |
| Size | 3 MB | 36 MB |
| Requires iOS | 16.6 | **15.8.3** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tomasz Lukaszyk](https://appshunter.io/developer/1434196795) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### Calc The App

[App page](https://appshunter.io/ios/app/calc-the-app/id1434196796)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Espresso | $0.99 | one-time |
| Coffee | $2.99 | one-time |
| Croissant | $4.99 | one-time |


### Octodecuple Calc

[App page](https://appshunter.io/ios/app/octodecuple-calc/id6742386286)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calc The App free?

Calc The App is free to download, with in-app purchases available.

### Is Octodecuple Calc free?

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

### Do Calc The App or Octodecuple Calc have ads?

Octodecuple Calc shows ads; Calc The App does not.

### Which is updated more often, Calc The App or Octodecuple Calc?

Calc The App ships an update every 25 months, and Octodecuple Calc every 2 weeks. Most recently, Calc The App was updated on October 4, 2026 and Octodecuple Calc on October 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.*