# Sai vs Oshi

The clearest difference is in-app purchases: Sai at none against Oshi's 1. Sai also leads on iOS requirement (15.0 vs 18.0). Oshi's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Oshi sells 1 one-off in-app purchase. Sai asks for nothing beyond the download.

Sai ships an update every 5 days, Oshi every 3 days. Both last shipped on November 10, 2026.

## The numbers

| Metric | Sai | Oshi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 days | **Every 3 days** |
| Size | 64 MB | 4 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [HyunJun Moon](https://appshunter.io/developer/6774416204) | [kazunari aoki](https://appshunter.io/developer/6774180811) |

## What reviewers say

### Sai

[App page](https://appshunter.io/ios/app/sai-relationship-stress-diary/id6774458829)

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

**In-app purchases:** none


### Oshi

[App page](https://appshunter.io/ios/app/oshi/id6814160858)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FULL | $5.99 | one-time |


## Frequently asked questions

### Is Sai free?

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

### Is Oshi free?

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

### Do Sai or Oshi have ads?

Sai shows ads; Oshi does not.

### Which is updated more often, Sai or Oshi?

Sai ships an update every 5 days, and Oshi every 3 days. Most recently, Sai was updated on November 10, 2026 and Oshi on November 10, 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.*