# handEye vs Let's Sync

The clearest difference is in-app purchases: handEye at none against Let's Sync's 10. Let's Sync's advantage is review sentiment (67% vs 50%) and update cadence (monthly vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Let's Sync sells 10 one-off in-app purchases. handEye asks for nothing beyond the download.

handEye ships an update every 3 months, Let's Sync monthly. The most recent releases landed on October 9, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | handEye | Let's Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.2 (6 ratings)](https://appshunter.io/ios/app/handeye/id391088628/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 50.0% of reviews | **66.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 20 MB | 92 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Car-O-Liner AB](https://appshunter.io/developer/391088631) | [Terra Virgo Corporation](https://appshunter.io/developer/906339963) |

## What reviewers say

### handEye

[App page](https://appshunter.io/ios/app/handeye/id391088628)

This utility app provides real-time control and data display for a specific car measuring system. It makes the process of measuring vehicles more accessible and efficient by putting all relevant information directly into the user's hand.

**Highlights:** Real-time data display, Complete control of measuring process, Compatible with Car-O-Tronic Vision, Mobile access to measuring information, Streamlined vehicle measurement

**Features:** macOS Compatibility

**In-app purchases:** none


### Let's Sync

[App page](https://appshunter.io/ios/app/lets-sync/id1350450913)

Synchronize audio across multiple smartphones for shared listening experiences. Create events for silent dances, interactive stories, group workouts, and more. It's a versatile platform for personal and business use, supporting thousands of concurrent participants.

**Highlights:** Synchronizes audio across multiple smartphones, Creates shared listening events, Supports silent dances and interactive stories, Enables group workouts and worldwide events, Platform for unique business ventures, Supports up to 7,000 concurrent participants

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Add 5 credits to wallet | $4.99 | one-time |
| Add 21 credits to wallet | $20.99 | one-time |
| Add 22 credits to wallet | $21.99 | one-time |
| Add 23 credits to wallet | $22.99 | one-time |
| Add 24 credits to wallet | $23.99 | one-time |
| Add 25 credits to wallet | $24.99 | one-time |
| Add 26 credits to wallet | $25.99 | one-time |
| Add 27 credits to wallet | $26.99 | one-time |
| Add 28 credits to wallet | $27.99 | one-time |
| Add 29 credits to wallet | $28.99 | one-time |


## Frequently asked questions

### Is handEye free?

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

### Is Let's Sync free?

Let's Sync is free to download, with in-app purchases available.

### Do handEye or Let's Sync have ads?

Neither handEye nor Let's Sync shows ads.

### Which is updated more often, handEye or Let's Sync?

handEye ships an update every 3 months, and Let's Sync monthly. Most recently, handEye was updated on October 9, 2026 and Let's Sync on October 10, 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.*