# Amai Calc Lite vs Sky2F

The clearest difference is ads: Sky2F at none against Amai Calc Lite's shown. Sky2F also leads on iOS requirement (9.0 vs 17.6). Amai Calc Lite's advantage is update cadence (every 3 days vs every 29 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.

Amai Calc Lite ships an update every 3 days, Sky2F every 29 months. The most recent releases landed on October 15, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Amai Calc Lite | Sky2F |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 29 months |
| Size | 10 MB | 14 MB |
| Requires iOS | 17.6 | **9.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Amaitorte](https://appshunter.io/developer/342443053) | [Sky Frameworks](https://appshunter.io/developer/1223773513) |

## What reviewers say

### Amai Calc Lite

[App page](https://appshunter.io/ios/app/amai-calc-lite/id1156024464)

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

**In-app purchases:** none


### Sky2F

[App page](https://appshunter.io/ios/app/sky2f/id1223773514)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Amai Calc Lite free?

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

### Is Sky2F free?

Sky2F is free to download, with no in-app purchases.

### Do Amai Calc Lite or Sky2F have ads?

Amai Calc Lite shows ads; Sky2F does not.

### Which is updated more often, Amai Calc Lite or Sky2F?

Amai Calc Lite ships an update every 3 days, and Sky2F every 29 months. Most recently, Amai Calc Lite was updated on October 15, 2026 and Sky2F on October 11, 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.*