# BT1 Tester vs PLB BMS

The clearest difference is update cadence: BT1 Tester at every 5 weeks against PLB BMS's every 5 months. BT1 Tester also leads on iOS requirement (7.0 vs 17). On price, ads, in-app purchases and device support there is nothing between them.

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

BT1 Tester ships an update every 5 weeks, PLB BMS every 5 months. The most recent releases landed on November 11, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | BT1 Tester | PLB BMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/bt1-tester/id1098097935/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 5 months |
| Monetization | Free | — |
| Size | 7 MB | 2 MB |
| Requires iOS | **7.0** | 17 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) | [东莞力朗电池科技有限公司](https://appshunter.io/developer/1776596673) |

## What reviewers say

### BT1 Tester

[App page](https://appshunter.io/ios/app/bt1-tester/id1098097935)

This utility app tests 12V car batteries, providing results on their condition, such as good, bad, or needing replacement. It displays the battery's voltage, volume, and overall health.

**Highlights:** Tests 12V car battery voltage, Measures battery volume, Assesses battery health, Displays test results (good, bad, replace)

**In-app purchases:** none


### PLB BMS

[App page](https://appshunter.io/ios/app/plb-bms/id6737475890)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BT1 Tester free?

BT1 Tester is free to download, with no in-app purchases.

### Is PLB BMS free?

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

### Do BT1 Tester or PLB BMS have ads?

Neither BT1 Tester nor PLB BMS shows ads.

### Which is updated more often, BT1 Tester or PLB BMS?

BT1 Tester ships an update every 5 weeks, and PLB BMS every 5 months. Most recently, BT1 Tester was updated on November 11, 2026 and PLB BMS on November 12, 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.*