# TT fayuo vs On

The clearest difference is rating: On at 5.0 against TT fayuo's 2.9. TT fayuo's advantage is in-app purchases (none vs 2) and iOS requirement (8.0 vs 17). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. On sells 2 one-off in-app purchases. TT fayuo asks for nothing beyond the download.

On holds the better App Store score, 5.0 against 2.9. Both are backed by a comparable volume of ratings — 7 and 7 respectively.

TT fayuo ships an update every 10 days, On every 3 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | TT fayuo | On |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.9 (7 ratings)](https://appshunter.io/ios/app/tt-fayuo/id1288855976/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/on-axis/id6446842774/reviews)** |
| Number of ratings | 7 | 7 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 4 MB | 20 MB |
| Requires iOS | **8.0** | 17 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [言伟 曾](https://appshunter.io/developer/1013547284) | [OK-Sound](https://appshunter.io/developer/1679335942) |

## What reviewers say

### TT fayuo

[App page](https://appshunter.io/ios/app/tt-fayuo/id1288855976)

This utility app facilitates real-time language translation through a connected Bluetooth device. It allows for direct translation between languages without needing to use your phone, making it ideal for travelers and language learners.

**Highlights:** Supports over 50 languages, Bluetooth connectivity, Direct translation without phone, Portable design, Easy to operate

**Features:** macOS Compatibility

**In-app purchases:** none


### On

[App page](https://appshunter.io/ios/app/on-axis/id6446842774)

This utility app helps audio professionals quickly measure and model audience areas for event and touring setups. It offers a streamlined workflow compatible with popular loudspeaker simulation programs, speeding up the design process. Users can create 3D models of listening areas and generate profiles along speaker axes.

**Highlights:** Audience area measurement, 3D listening area modeling, Speaker axis profiling, Bluetooth laser distance finder integration, Export to loudspeaker simulation software, 14-day free trial

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 14-day Trial | Free | one-time |
| Unlock App | $149.99 | one-time |


## Frequently asked questions

### Is TT fayuo free?

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

### Is On free?

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

### Which has better reviews, TT fayuo or On?

On is rated higher. TT fayuo averages 2.9 out of 5 from 7 ratings, while On averages 5.0 from 7 ratings.

### Do TT fayuo or On have ads?

Neither TT fayuo nor On shows ads.

### Which is updated more often, TT fayuo or On?

TT fayuo ships an update every 10 days, and On every 3 weeks. Most recently, TT fayuo was updated on November 3, 2026 and On on November 3, 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.*