# MAMORIO vs Kotodute

The clearest difference is iOS requirement: MAMORIO at 15.0 against Kotodute's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. MAMORIO sells 4 in-app purchases, starting at $8.99 per year and Kotodute sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

MAMORIO ships an update every 10 days, Kotodute weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | MAMORIO | Kotodute |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (3 ratings)](https://appshunter.io/ios/app/mamorio/id952095468/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 25.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 63 MB | 12 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [NEARIZE K.K.](https://appshunter.io/developer/952095467) | [Toshinori Matsui](https://appshunter.io/developer/1870057546) |

## What reviewers say

### MAMORIO

[App page](https://appshunter.io/ios/app/mamorio/id952095468)

This app helps you prevent losing your belongings by attaching a small tag. It notifies you when you leave an item behind and allows you to see its last detected location via a Bluetooth crowd-sensor network. It also offers a community-based finding feature and lost-and-found integration in select regions.

**Highlights:** Left-behind alerts, Last detected location history, Crowd tracking network, MAMORIO Spot integration (Japan), iPhone found alerts (Japan), Tag setup and management

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Anshin Plan(wallet) | $8.99 | per year |
| AnshinPlan(Bag) | $8.99 | per year |
| Anshin Plan(Key) | $8.99 | per year |
| Anshin Plan(Electronics) | $8.99 | per year |


### Kotodute

[App page](https://appshunter.io/ios/app/kotodute/id6790640785)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kotodute Premium | $5.99 | one-time |


## Frequently asked questions

### Is MAMORIO free?

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

### Is Kotodute free?

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

### Do MAMORIO or Kotodute have ads?

Neither MAMORIO nor Kotodute shows ads.

### Which is updated more often, MAMORIO or Kotodute?

MAMORIO ships an update every 10 days, and Kotodute weekly. Most recently, MAMORIO was updated on October 24, 2026 and Kotodute on October 24, 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.*