# CityU SDS vs Learnbit

The clearest difference is iOS requirement: Learnbit at 12.0 against CityU SDS's 18.0. On price, ads, 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.

## The numbers

| Metric | CityU SDS | Learnbit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | — |
| Size | 32 MB | 29 MB |
| Requires iOS | 18.0 | **12.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [City University of Hong Kong](https://appshunter.io/developer/548195813) | [Animesh Bansriyar](https://appshunter.io/developer/1880067850) |

## What reviewers say

### CityU SDS

[App page](https://appshunter.io/ios/app/cityu-sds/id1569540419)

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

**In-app purchases:** none


### Learnbit

[App page](https://appshunter.io/ios/app/learnbit/id6759665527)

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

**In-app purchases:** none


## Frequently asked questions

### Is CityU SDS free?

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

### Is Learnbit free?

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

### Do CityU SDS or Learnbit have ads?

Neither CityU SDS nor Learnbit 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.*