# YMOBD vs Chorus Speaker

The clearest difference is in-app purchases: Chorus Speaker at none against YMOBD's 4. Chorus Speaker also leads on update cadence (every 5 days vs every 5 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. YMOBD sells 4 one-off in-app purchases. Chorus Speaker asks for nothing beyond the download.

YMOBD ships an update every 5 weeks, Chorus Speaker every 5 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | YMOBD | Chorus Speaker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.9 (87 ratings)](https://appshunter.io/ios/app/ymobd/id1627949735/reviews)** | — |
| Number of ratings | **87** | — |
| Positive reviews | 35.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 49 MB | 5 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [shenzhen yuming](https://appshunter.io/developer/1432795415) | [源 蔡](https://appshunter.io/developer/6800158577) |

## What reviewers say

### YMOBD

[App page](https://appshunter.io/ios/app/ymobd/id1627949735)

This tool connects to your car's OBD adapter via Bluetooth to collect real-time engine data, read fault codes, and provide solutions. It also records driving data, analyzes performance, and offers a HUD display for a safer and more enjoyable driving experience.

**Highlights:** Real-time engine data collection, Vehicle fault code reading and solutions, Driving data recording and analysis, Vehicle performance testing (acceleration, braking), HUD display function, Day and night modes

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 车辆年检模拟 | $0.99 | one-time |
| YMOBD-business expansion | $1.99 | one-time |
| YMOBD-Battery monitoring | $2.99 | one-time |
| Super Car Sound | $5.99 | one-time |

**What reviewers like**

- 👍 Works well with Toyota
- 👍 Accurate with many functions
- 👍 Amazing for fixing cars
- 👍 Useful for live data monitoring
- 👍 Great and very detailed

**What reviewers complain about**

- 🐛 Scam, pay again for add-on
- 🐛 Crashes on iPhone 17 Pro
- 🐛 Requires personal info sharing
- 🐛 Does not connect at all
- 🐛 Junk, doesn't read OBD2 reader

**Reported bugs**

- App crashes on iPhone 17 Pro
- Purchased add-on requires payment again
- Contact section not working
- App crashes every time on iPhone 17 Pro
- Does not connect at all

**Requested features**

- Dark Mode support
- Landscape mode support
- Store data for comparison over time
- Summary of vehicle diagnostics without connection
- Run in background feature


### Chorus Speaker

[App page](https://appshunter.io/ios/app/chorus-speaker/id6800169197)

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

**In-app purchases:** none


## Frequently asked questions

### Is YMOBD free?

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

### Is Chorus Speaker free?

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

### Do YMOBD or Chorus Speaker have ads?

Neither YMOBD nor Chorus Speaker shows ads.

### Which is updated more often, YMOBD or Chorus Speaker?

YMOBD ships an update every 5 weeks, and Chorus Speaker every 5 days. Most recently, YMOBD was updated on November 3, 2026 and Chorus Speaker on October 31, 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.*