# Calculightning 3 vs Onilo

The clearest difference is price: Onilo at Free against Calculightning 3's $12.99. Calculightning 3's advantage is iOS requirement (8.0 vs 15.1). On in-app purchases and device support there is nothing between them.

Onilo is free to download; Calculightning 3 costs $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Calculightning 3 | Onilo |
| --- | --- | --- |
| Price | $12.99 | **Free** |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Every 3 months |
| Size | 270 MB | 31 MB |
| Requires iOS | **8.0** | 15.1 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Ernst Klett Verlag GmbH, Stuttgart](https://appshunter.io/developer/751540887) | [StoryDOCKS GmbH](https://appshunter.io/developer/1523051642) |

## What reviewers say

### Calculightning 3

[App page](https://appshunter.io/ios/app/calculightning-3-maths/id1112860730)

**In-app purchases:** none


### Onilo

[App page](https://appshunter.io/ios/app/onilo/id1523051643)

**In-app purchases:** none


## Frequently asked questions

### Is Calculightning 3 free?

Calculightning 3 costs $12.99, with no in-app purchases.

### Is Onilo free?

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

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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.*