# 推しごとカレンダー vs Understudy

The clearest difference is in-app purchases: 推しごとカレンダー at none against Understudy's 5. Understudy's advantage is iOS requirement (14.0 vs 16.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Understudy sells 5 in-app purchases, starting at $4.99 per month. 推しごとカレンダー asks for nothing beyond the download.

推しごとカレンダー ships an update every 3 weeks, Understudy monthly. The most recent releases landed on October 4, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | 推しごとカレンダー | Understudy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 80 MB | 42 MB |
| Requires iOS | 16.6 | **14.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [株式会社デジタルアミューズメント](https://appshunter.io/developer/1722732923) | [Shingo Otsuhata](https://appshunter.io/developer/1871224706) |

## What reviewers say

### 推しごとカレンダー

[App page](https://appshunter.io/ios/app/id6474892365)

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

**In-app purchases:** none


### Understudy

[App page](https://appshunter.io/ios/app/understudy-learn-your-lines/id6758158317)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Understudy Pro (Monthly) | $4.99 | per month |
| Understudy Pro (Yearly) | $29.99 | per year |
| Buy me a coffee | $0.99 | one-time |
| Add a donut | $1.99 | one-time |
| Add a sandwich | $3.99 | one-time |


## Frequently asked questions

### Is 推しごとカレンダー free?

推しごとカレンダー is free to download, with no in-app purchases.

### Is Understudy free?

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

### Do 推しごとカレンダー or Understudy have ads?

Neither 推しごとカレンダー nor Understudy shows ads.

### Which is updated more often, 推しごとカレンダー or Understudy?

推しごとカレンダー ships an update every 3 weeks, and Understudy monthly. Most recently, 推しごとカレンダー was updated on October 4, 2026 and Understudy on September 29, 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.*