# Zero Tochu零触 vs Korro

The clearest difference is rating: Korro at 4.3 against Zero Tochu零触's 2.1. Korro also leads on update cadence (weekly vs every 4 months). Zero Tochu零触's advantage is iOS requirement (12.0 vs 15.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

Korro holds the better App Store score, 4.3 against 2.1. Both are backed by a comparable volume of ratings — 7 and 18 respectively.

Zero Tochu零触 ships an update every 4 months, Korro weekly. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Zero Tochu零触 | Korro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.1 (7 ratings)](https://appshunter.io/ios/app/zero-tochu/id6467008871/reviews) | **[4.3 (18 ratings)](https://appshunter.io/ios/app/korro/id6479257845/reviews)** |
| Number of ratings | 7 | **18** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | Free | Free |
| Size | 28 MB | 837 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Hunan Zero Touch Cloud Technology Co., Ltd.](https://appshunter.io/developer/1707998896) | [Korro AI GmbH](https://appshunter.io/developer/1465929143) |

## What reviewers say

### Zero Tochu零触

[App page](https://appshunter.io/ios/app/zero-tochu/id6467008871)

Control your adult toys with this app, offering smart connections, personalized settings, and secure encryption. Explore your needs, deepen relationships, and add fun to intimate moments.

**Highlights:** Smart Bluetooth connection, Personalized vibration settings, Preset and custom modes, Usage tracking for health, Secure encryption, Remote partner interaction

**Features:** macOS Compatibility

**In-app purchases:** none


### Korro

[App page](https://appshunter.io/ios/app/korro/id6479257845)

This app uses AI and computer vision to enhance pediatric occupational therapy. It offers immersive, adaptive sessions for children and provides detailed performance analysis for therapists and caregivers, aiming to make healthcare more effective and engaging.

**Highlights:** AI-powered computer vision analysis, Immersive, adaptive therapy sessions, Customized client program adjustments, Comprehensive performance analytics, Automated activity documentation, Sensor-free, seamless onboarding

**In-app purchases:** none


## Frequently asked questions

### Is Zero Tochu零触 free?

Zero Tochu零触 is free to download, with no in-app purchases.

### Is Korro free?

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

### Which has better reviews, Zero Tochu零触 or Korro?

Korro is rated higher. Zero Tochu零触 averages 2.1 out of 5 from 7 ratings, while Korro averages 4.3 from 18 ratings.

### Do Zero Tochu零触 or Korro have ads?

Neither Zero Tochu零触 nor Korro shows ads.

### Which is updated more often, Zero Tochu零触 or Korro?

Zero Tochu零触 ships an update every 4 months, and Korro weekly. Most recently, Zero Tochu零触 was updated on October 24, 2026 and Korro on October 21, 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.*