# みもり vs otta（オッタ）

The clearest difference is review sentiment: みもり at 55% against otta（オッタ）'s 20%. みもり also leads on update cadence (every 2 weeks vs monthly). 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.

みもり ships an update every 2 weeks, otta（オッタ） monthly. Both last shipped on October 29, 2026.

## The numbers

| Metric | みもり | otta（オッタ） |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **54.7% of reviews** | 20.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | — | Free |
| Size | 63 MB | 64 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ドリームエリア株式会社](https://appshunter.io/developer/838671023) | [otta inc.](https://appshunter.io/developer/966828927) |

## What reviewers say

### みもり

[App page](https://appshunter.io/ios/app/id1367812859)

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

**In-app purchases:** none


### otta（オッタ）

[App page](https://appshunter.io/ios/app/otta/id1521415414)

This service helps parents ensure their children's safety by tracking their location. It utilizes beacon technology and GPS to provide real-time updates and communication features, offering peace of mind for families.

**Highlights:** Real-time location tracking, Beacon technology for proximity alerts, GPS for nationwide coverage, Voice messaging for family communication, Emergency panic button, Community-based neighborhood watch

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is みもり free?

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

### Is otta（オッタ） free?

otta（オッタ） is free to download, with no in-app purchases.

### Do みもり or otta（オッタ） have ads?

Neither みもり nor otta（オッタ） shows ads.

### Which is updated more often, みもり or otta（オッタ）?

みもり ships an update every 2 weeks, and otta（オッタ） monthly. Most recently, みもり was updated on October 29, 2026 and otta（オッタ） on October 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.*