# Oshimates vs Aster

The clearest difference is in-app purchases: Oshimates at none against Aster's 3. Oshimates also leads on ads (none vs shown) and iOS requirement (15.1 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Aster sells 3 in-app purchases, starting at $14.99 per month. Oshimates asks for nothing beyond the download.

Oshimates ships an update every 3 days, Aster every 5 days. The most recent releases landed on September 15, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Oshimates | Aster |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Every 5 days |
| Monetization | Free | — |
| Size | 54 MB | 21 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Imaizumi Kei](https://appshunter.io/developer/1803264759) | [Otaac Inc.](https://appshunter.io/developer/1498576031) |

## What reviewers say

### Oshimates

[App page](https://appshunter.io/ios/app/oshimates/id6744442329)

Manage your favorite idol's activities and milestones with this comprehensive support app. Track your fan history, schedule events with reminders, and connect with fellow fans. Stay motivated and organized in your fan journey.

**Highlights:** Idol information management, Fan history tracking, Anniversary notifications, Event scheduling and reminders, Connect with fellow fans, Community building

**Features:** macOS Compatibility

**In-app purchases:** none


### Aster

[App page](https://appshunter.io/ios/app/aster-bump-into-your-fandom/id6794772572)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム（1ヶ月） | $14.99 | per month |
| プレミアム（3ヶ月） | $29.99 | per 3 months |
| プレミアム（6ヶ月） | $34.99 | per 6 months |


## Frequently asked questions

### Is Oshimates free?

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

### Is Aster free?

Aster is free to download, with in-app purchases available.

### Do Oshimates or Aster have ads?

Aster shows ads; Oshimates does not.

### Which is updated more often, Oshimates or Aster?

Oshimates ships an update every 3 days, and Aster every 5 days. Most recently, Oshimates was updated on September 15, 2026 and Aster on October 20, 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.*