# Sentiary vs 暗渠の地図

The clearest difference is in-app purchases: 暗渠の地図 at none against Sentiary's 1. Sentiary's advantage is update cadence (weekly vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Sentiary sells 1 in-app purchase, starting at $1.99 per month. 暗渠の地図 asks for nothing beyond the download.

Sentiary ships an update weekly, 暗渠の地図 monthly. The most recent releases landed on October 19, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Sentiary | 暗渠の地図 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Size | 16 MB | 26 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Ken Ishizaka](https://appshunter.io/developer/1883950733) | [Suzuki Creative](https://appshunter.io/developer/404832413) |

## What reviewers say

### Sentiary

[App page](https://appshunter.io/ios/app/sentiary/id6760335170)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sentiary Pro | $1.99 | per month |


### 暗渠の地図

[App page](https://appshunter.io/ios/app/id6799265126)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sentiary free?

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

### Is 暗渠の地図 free?

暗渠の地図 is free to download, with no in-app purchases.

### Do Sentiary or 暗渠の地図 have ads?

Neither Sentiary nor 暗渠の地図 shows ads.

### Which is updated more often, Sentiary or 暗渠の地図?

Sentiary ships an update weekly, and 暗渠の地図 monthly. Most recently, Sentiary was updated on October 19, 2026 and 暗渠の地図 on October 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.*