# Ostrum vs Aubin

The clearest difference is update cadence: Aubin at every 3 weeks against Ostrum's every 6 weeks. 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.

Ostrum ships an update every 6 weeks, Aubin every 3 weeks. The most recent releases landed on August 17, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Ostrum | Aubin |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 57 MB | 63 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ostrum Tech Limited](https://appshunter.io/developer/1596744681) | [Aubin MaaS Limited](https://appshunter.io/developer/1854048621) |

## What reviewers say

### Ostrum

[App page](https://appshunter.io/ios/app/ostrum/id6447539444)

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

**In-app purchases:** none


### Aubin

[App page](https://appshunter.io/ios/app/aubin/id6504335952)

This app assists autistic and neurodivergent individuals with planning and navigating their journeys. It provides tools to make travel more accessible and less stressful.

**Highlights:** Journey planning, Travel assistance, Neurodivergent support, Accessible travel tools

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

**In-app purchases:** none


## Frequently asked questions

### Is Ostrum free?

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

### Is Aubin free?

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

### Do Ostrum or Aubin have ads?

Neither Ostrum nor Aubin shows ads.

### Which is updated more often, Ostrum or Aubin?

Ostrum ships an update every 6 weeks, and Aubin every 3 weeks. Most recently, Ostrum was updated on August 17, 2026 and Aubin on September 16, 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.*