# Simple Math Operations vs Kelingo

The clearest difference is in-app purchases: Kelingo at none against Simple Math Operations's 1. Kelingo also leads on iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Simple Math Operations sells 1 one-off in-app purchase. Kelingo asks for nothing beyond the download.

## The numbers

| Metric | Simple Math Operations | Kelingo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Size | 13 MB | 25 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ahmet Tek](https://appshunter.io/developer/1844955483) | [Emre KARALOGLU](https://appshunter.io/developer/6777680768) |

## What reviewers say

### Simple Math Operations

[App page](https://appshunter.io/ios/app/simple-math-operations/id6758960191)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Premium | $6.99 | one-time |


### Kelingo

[App page](https://appshunter.io/ios/app/kelingo/id6817747957)

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

**In-app purchases:** none


## Frequently asked questions

### Is Simple Math Operations free?

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

### Is Kelingo free?

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

### Do Simple Math Operations or Kelingo have ads?

Neither Simple Math Operations nor Kelingo shows ads.

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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.*