# Askar Astro Controller vs Digital Protractor & Level

The clearest difference is in-app purchases: Askar Astro Controller at none against Digital Protractor & Level's 1. Askar Astro Controller also leads on update cadence (daily vs every 9 days) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Digital Protractor & Level sells 1 one-off in-app purchase. Askar Astro Controller asks for nothing beyond the download.

Askar Astro Controller ships an update daily, Digital Protractor & Level every 9 days. The most recent releases landed on September 29, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Askar Astro Controller | Digital Protractor & Level |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 9 days |
| Size | 106 MB | 1 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jiaxing Ruixing Optical Instrument Co., Ltd.](https://appshunter.io/developer/6792950937) | [Robert Carpenter](https://appshunter.io/developer/6792301217) |

## What reviewers say

### Askar Astro Controller

[App page](https://appshunter.io/ios/app/askar-astro-controller/id6792950935)

**Features:** macOS Compatibility

**In-app purchases:** none


### Digital Protractor & Level

[App page](https://appshunter.io/ios/app/digital-protractor-and-level/id6795648874)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $1.99 | one-time |


## Frequently asked questions

### Is Askar Astro Controller free?

Askar Astro Controller is free to download, with no in-app purchases.

### Is Digital Protractor & Level free?

Digital Protractor & Level is free to download, with in-app purchases available.

### Do Askar Astro Controller or Digital Protractor & Level have ads?

Neither Askar Astro Controller nor Digital Protractor & Level shows ads.

### Which is updated more often, Askar Astro Controller or Digital Protractor & Level?

Askar Astro Controller ships an update daily, and Digital Protractor & Level every 9 days. Most recently, Askar Astro Controller was updated on September 29, 2026 and Digital Protractor & Level on September 15, 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.*