# arbus vs Just Random Number

The clearest difference is iOS requirement: arbus at 13.0 against Just Random Number's 16.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

arbus ships an update every 4 weeks, Just Random Number fortnightly. The most recent releases landed on June 11, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | arbus | Just Random Number |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Fortnightly** |
| Size | 29 MB | 4 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [Federico Ruiz Calamari](https://appshunter.io/developer/1641161251) | [Juan Luis Alvarez](https://appshunter.io/developer/1672083300) |

## What reviewers say

### arbus

[App page](https://appshunter.io/ios/app/arbus/id1641161249)

**Features:** macOS Compatibility

**In-app purchases:** none


### Just Random Number

[App page](https://appshunter.io/ios/app/just-random-number/id6451073697)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is arbus free?

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

### Is Just Random Number free?

Just Random Number is free to download, with no in-app purchases.

### Do arbus or Just Random Number have ads?

Neither arbus nor Just Random Number shows ads.

### Which is updated more often, arbus or Just Random Number?

arbus ships an update every 4 weeks, and Just Random Number fortnightly. Most recently, arbus was updated on June 11, 2026 and Just Random Number 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.*