# Simple Calculator vs Chain Calculator

The clearest difference is in-app purchases: Chain Calculator at none against Simple Calculator's 2. Chain Calculator also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Simple Calculator sells 2 one-off in-app purchases. Chain Calculator asks for nothing beyond the download.

Simple Calculator ships an update every 3 weeks, Chain Calculator monthly. The most recent releases landed on September 20, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Simple Calculator | Chain Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 9 MB | 18 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Takao Ichimura](https://appshunter.io/developer/1474061593) | [seongkuk park](https://appshunter.io/developer/1895828986) |

## What reviewers say

### Simple Calculator

[App page](https://appshunter.io/ios/app/simple-calculator-practicalc/id6760546131)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| Remove Ads + Support | $2.99 | one-time |


### Chain Calculator

[App page](https://appshunter.io/ios/app/chain-calculator/id6764549705)

**In-app purchases:** none


## Frequently asked questions

### Is Simple Calculator free?

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

### Is Chain Calculator free?

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

### Do Simple Calculator or Chain Calculator have ads?

Simple Calculator shows ads; Chain Calculator does not.

### Which is updated more often, Simple Calculator or Chain Calculator?

Simple Calculator ships an update every 3 weeks, and Chain Calculator monthly. Most recently, Simple Calculator was updated on September 20, 2026 and Chain Calculator on September 18, 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.*