# Just a Simple Calculator vs Octodecuple Calc

The clearest difference is ads: Just a Simple Calculator at none against Octodecuple Calc's shown. Just a Simple Calculator also leads on iOS requirement (13.0 vs 15.8.3). Octodecuple Calc's advantage is update cadence (every 2 weeks vs every 5 months). 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.

Just a Simple Calculator ships an update every 5 months, Octodecuple Calc every 2 weeks. The most recent releases landed on October 21, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Just a Simple Calculator | Octodecuple Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/just-a-simple-calculator/id6471594951/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 24 MB | 36 MB |
| Requires iOS | **13.0** | 15.8.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Onur Hazar](https://appshunter.io/developer/815533584) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### Just a Simple Calculator

[App page](https://appshunter.io/ios/app/just-a-simple-calculator/id6471594951)

This app offers a whimsical and stylish approach to basic arithmetic. It goes beyond simple calculations with delightful animations and customizable covers, making math tasks more engaging and elegant.

**Highlights:** Basic arithmetic operations, Delightful animations, User-friendly interface, Customizable calculator covers, Elegant color palette

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

**In-app purchases:** none


### 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 Just a Simple Calculator free?

Just a Simple Calculator is free to download, with no in-app purchases.

### Is Octodecuple Calc free?

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

### Do Just a Simple Calculator or Octodecuple Calc have ads?

Octodecuple Calc shows ads; Just a Simple Calculator does not.

### Which is updated more often, Just a Simple Calculator or Octodecuple Calc?

Just a Simple Calculator ships an update every 5 months, and Octodecuple Calc every 2 weeks. Most recently, Just a Simple Calculator was updated on October 21, 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.*