# kotonavi vs echoAR

The clearest difference is update cadence: echoAR at every 2 days against kotonavi's every 2 months. echoAR also leads on iOS requirement (10.0 vs 12.0). 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.

kotonavi ships an update every 2 months, echoAR every 2 days. The most recent releases landed on October 3, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | kotonavi | echoAR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/echoar/id1309675088/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | — | Free |
| Size | 12 MB | 42 MB |
| Requires iOS | 12.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KOTOBANO MICHIANNAI, N.P.O.](https://appshunter.io/developer/1272710425) | [ELIX Inc](https://appshunter.io/developer/530898499) |

## What reviewers say

### kotonavi

[App page](https://appshunter.io/ios/app/kotonavi/id1272710426)

**Features:** macOS Compatibility

**In-app purchases:** none


### echoAR

[App page](https://appshunter.io/ios/app/echoar/id1309675088)

This app uses your device's camera to detect floors and obstacles, translating this information into pitch modulation to assist visually impaired users. It offers customizable settings for sweep time, detection width, and pitch scale.

**Highlights:** Real-time camera image analysis, Floor and obstacle detection, Pitch modulation output, Customizable sweep time, Adjustable detection width, Scalable pitch modulation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is kotonavi free?

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

### Is echoAR free?

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

### Do kotonavi or echoAR have ads?

Neither kotonavi nor echoAR shows ads.

### Which is updated more often, kotonavi or echoAR?

kotonavi ships an update every 2 months, and echoAR every 2 days. Most recently, kotonavi was updated on October 3, 2026 and echoAR on October 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.*