# こども見守りサービス OTTADE!（オッタデ） vs sifa

The clearest difference is update cadence: こども見守りサービス OTTADE!（オッタデ） at every 2 months against sifa's every 46 months. sifa's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

こども見守りサービス OTTADE!（オッタデ） ships an update every 2 months, sifa every 46 months. The most recent releases landed on September 10, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | こども見守りサービス OTTADE!（オッタデ） | sifa |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 46 months |
| Size | 64 MB | 3 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [otta inc.](https://appshunter.io/developer/966828927) | [masayuki hashizume](https://appshunter.io/developer/1504205644) |

## What reviewers say

### こども見守りサービス OTTADE!（オッタデ）

[App page](https://appshunter.io/ios/app/ottade/id1521413536)

**Features:** Vision Pro support

**In-app purchases:** none


### sifa

[App page](https://appshunter.io/ios/app/sifa/id1626933190)

**In-app purchases:** none


## Frequently asked questions

### Is こども見守りサービス OTTADE!（オッタデ） free?

こども見守りサービス OTTADE!（オッタデ） is free to download, with no in-app purchases.

### Is sifa free?

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

### Do こども見守りサービス OTTADE!（オッタデ） or sifa have ads?

Neither こども見守りサービス OTTADE!（オッタデ） nor sifa shows ads.

### Which is updated more often, こども見守りサービス OTTADE!（オッタデ） or sifa?

こども見守りサービス OTTADE!（オッタデ） ships an update every 2 months, and sifa every 46 months. Most recently, こども見守りサービス OTTADE!（オッタデ） was updated on September 10, 2026 and sifa on September 19, 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.*