# Oshi Log｜Fan Support App vs Day0

The clearest difference is in-app purchases: Day0 at none against Oshi Log｜Fan Support App's 3. Day0 also leads on update cadence (every 6 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Oshi Log｜Fan Support App sells 3 in-app purchases, starting at $2.99 per 7 days. Day0 asks for nothing beyond the download.

Oshi Log｜Fan Support App ships an update fortnightly, Day0 every 6 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Oshi Log｜Fan Support App | Day0 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/oshi-logfan-support-app/id6746085816/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 6 days** |
| Monetization | Free with in-app purchases | — |
| Size | 57 MB | 31 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [hashimoto ryouya](https://appshunter.io/developer/1684907824) | [MARQUE & CROWN INC.](https://appshunter.io/developer/6793105578) |

## What reviewers say

### Oshi Log｜Fan Support App

[App page](https://appshunter.io/ios/app/oshi-logfan-support-app/id6746085816)

This app helps fans meticulously record and relive their favorite idol's activities. Track events, merchandise purchases, and fan pilgrimages with timeline and map views. Engage with AI-powered chat reactions from your idol to enhance your fan experience.

**Highlights:** Record Oshi activities in a timeline, Save and view pilgrimages on a map, AI chat reactions from your Oshi, Receive surprise messages based on posts, Social media-like memory display

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示 | $2.99 | per 7 days |
| サブスクリプション（１ヶ月） | $5.99 | per month |
| 広告非表示 | $59.99 | per year |


### Day0

[App page](https://appshunter.io/ios/app/day0-private-diary/id6793105576)

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

**In-app purchases:** none


## Frequently asked questions

### Is Oshi Log｜Fan Support App free?

Oshi Log｜Fan Support App is free to download, with in-app purchases available.

### Is Day0 free?

Day0 is free to download, with no in-app purchases.

### Do Oshi Log｜Fan Support App or Day0 have ads?

Neither Oshi Log｜Fan Support App nor Day0 shows ads.

### Which is updated more often, Oshi Log｜Fan Support App or Day0?

Oshi Log｜Fan Support App ships an update fortnightly, and Day0 every 6 days. Most recently, Oshi Log｜Fan Support App was updated on October 30, 2026 and Day0 on October 31, 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.*