# 오이 vs Altair

The clearest difference is in-app purchases: Altair at none against 오이's 10. Altair also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. 오이 sells 10 in-app purchases, starting at $12.99 per year. Altair asks for nothing beyond the download.

오이 ships an update weekly, Altair every 8 days. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | 오이 | Altair |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 8 days |
| Monetization | Free with in-app purchases | — |
| Size | 154 MB | 15 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [Viva La Vida Corp.](https://appshunter.io/developer/1554435429) | [Hyejeong kim](https://appshunter.io/developer/6813708650) |

## What reviewers say

### 오이

[App page](https://appshunter.io/ios/app/id6480576858)

Discover and join offline hobby groups and clubs, or participate in curated social dining events. Connect with like-minded individuals for regular meetups and shared experiences.

**Highlights:** Curated social dining events, Offline hobby group discovery, Join clubs and communities, Event scheduling and chat, Location-based meetups, Activity recording

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 모임 추가 활동권(연간)  할인 이벤트 적용 | $12.99 | per year |
| 모임 추가 활동권(연간) | $29.99 | per year |
| 프리미엄 모임 구독(연간)#1  할인 이벤트 적용 | $69.99 | per year |
| 프리미엄 모임 구독(연간)#2  할인 이벤트 적용 | $69.99 | per year |
| 프리미엄 모임 구독(연간)#3  할인 이벤트 적용 | $69.99 | per year |
| 프리미엄 모임 구독(연간)#4  할인 이벤트 적용 | $69.99 | per year |
| 프리미엄 모임 구독(연간)#프로모션  할인 이벤트 적용 | $69.99 | per year |
| 프리미엄 모임 구독(연간)#선착순 프로모션 | $69.99 | per year |
| 프리미엄 모임 구독(연간)#4 | $129.99 | per year |
| 프리미엄 모임 구독(연간)#프로모션 | $129.99 | per year |


### Altair

[App page](https://appshunter.io/ios/app/altair-planetary-log/id6813708648)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 오이 free?

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

### Is Altair free?

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

### Do 오이 or Altair have ads?

오이 shows ads; Altair does not.

### Which is updated more often, 오이 or Altair?

오이 ships an update weekly, and Altair every 8 days. Most recently, 오이 was updated on October 24, 2026 and Altair on October 9, 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.*