# 性活カレンダー vs Hook

The clearest difference is in-app purchases: 性活カレンダー at none against Hook's 3. 性活カレンダー also leads on update cadence (every 10 days vs every 2 months) and iOS requirement (15.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Hook sells 3 in-app purchases, starting at $3.99 per month. 性活カレンダー asks for nothing beyond the download.

性活カレンダー ships an update every 10 days, Hook every 2 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | 性活カレンダー | Hook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (5 ratings)](https://appshunter.io/ios/app/hook-intimacy-tracker/id6765845692/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 months |
| Monetization | — | Freemium |
| Size | 64 MB | 78 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Gento Fukuda](https://appshunter.io/developer/1484151443) | [Andre Suhartanto](https://appshunter.io/developer/1824125348) |

## What reviewers say

### 性活カレンダー

[App page](https://appshunter.io/ios/app/id1484151444)

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

**In-app purchases:** none


### Hook

[App page](https://appshunter.io/ios/app/hook-intimacy-tracker/id6765845692)

A private journal for your intimate life, keeping all entries securely on your device. Track partners, moods, locations, and protection details to gain insights into your personal story. Optional iCloud backup and STI test reminders are available.

**Highlights:** Private intimacy journal, On-device data storage, Partner profiles, Mood and location tracking, Protection and notes, Visual insights and patterns, Optional iCloud backup

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Yearly | $14.99 | per year |
| Lifetime | $24.99 | one-time |


## Frequently asked questions

### Is 性活カレンダー free?

性活カレンダー is free to download, with no in-app purchases.

### Is Hook free?

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

### Do 性活カレンダー or Hook have ads?

Neither 性活カレンダー nor Hook shows ads.

### Which is updated more often, 性活カレンダー or Hook?

性活カレンダー ships an update every 10 days, and Hook every 2 months. Most recently, 性活カレンダー was updated on November 3, 2026 and Hook on November 4, 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.*