# Bluetooth Trailer Tester vs TOPDON BatteryLab

The clearest difference is review sentiment: Bluetooth Trailer Tester at 75% against TOPDON BatteryLab's 24%. Bluetooth Trailer Tester also leads on rating (4.0 vs 2.4) and update cadence (every 2 weeks vs monthly). TOPDON BatteryLab's advantage is ratings volume (15 vs 4). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Bluetooth Trailer Tester holds the better App Store score, 4.0 against 2.4. Both are backed by a comparable volume of ratings — 4 and 15 respectively. Written reviews point the same way: 75% of Bluetooth Trailer Tester's written reviews are positive against 24% of TOPDON BatteryLab's.

Bluetooth Trailer Tester ships an update every 2 weeks, TOPDON BatteryLab monthly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Bluetooth Trailer Tester | TOPDON BatteryLab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/bluetooth-trailer-tester/id1068371124/reviews)** | [2.4 (15 ratings)](https://appshunter.io/ios/app/topdon-batterylab/id6462673217/reviews) |
| Number of ratings | 4 | **15** |
| Positive reviews | **75.0% of reviews** | 24.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free | Free |
| Size | 2 MB | 188 MB |
| Requires iOS | **7.0** | 11.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [JS Products, Inc.](https://appshunter.io/developer/673417159) | [HK TOPDON TECHNOLOGY Co., LIMITED](https://appshunter.io/developer/1846276192) |

## What reviewers say

### Bluetooth Trailer Tester

[App page](https://appshunter.io/ios/app/bluetooth-trailer-tester/id1068371124)

Test your trailer's electrical system remotely from your truck's cab. This app allows a single user to check running lights, brake lights, reverse lights, turn signals, and trailer brake connections. It is compatible with most smart devices and can test intelligent trailer modules.

**Highlights:** Remote trailer light testing, Single-person operation, Tests all trailer lights, Compatible with smart devices, Tests intelligent trailer modules

**Features:** macOS Compatibility

**In-app purchases:** none


### TOPDON BatteryLab

[App page](https://appshunter.io/ios/app/topdon-batterylab/id6462673217)

This app allows you to test your car's battery and generator. It provides detailed battery life and voltage calculations, and can manage multiple devices simultaneously. Generate and view test reports with ease.

**Highlights:** Calculate battery life and voltage, Inspect car generator, Manage multiple devices, Quick device connection, One-click test report generation

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Bluetooth Trailer Tester free?

Bluetooth Trailer Tester is free to download, with no in-app purchases.

### Is TOPDON BatteryLab free?

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

### Which has better reviews, Bluetooth Trailer Tester or TOPDON BatteryLab?

Bluetooth Trailer Tester is rated higher. Bluetooth Trailer Tester averages 4.0 out of 5 from 4 ratings, while TOPDON BatteryLab averages 2.4 from 15 ratings.

### Do Bluetooth Trailer Tester or TOPDON BatteryLab have ads?

Neither Bluetooth Trailer Tester nor TOPDON BatteryLab shows ads.

### Which is updated more often, Bluetooth Trailer Tester or TOPDON BatteryLab?

Bluetooth Trailer Tester ships an update every 2 weeks, and TOPDON BatteryLab monthly. Most recently, Bluetooth Trailer Tester was updated on November 2, 2026 and TOPDON BatteryLab 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.*