# OzCharge BM12 vs MemoMapper

The clearest difference is update cadence: OzCharge BM12 at every 2 months against MemoMapper's every 25 months. 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.

OzCharge BM12 ships an update every 2 months, MemoMapper every 25 months. The most recent releases landed on November 2, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | OzCharge BM12 | MemoMapper |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 25 months |
| Monetization | Free | — |
| Size | 8 MB | 3 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Autech Australia Pty. Ltd.](https://appshunter.io/developer/1447576897) | [thomas forsberg](https://appshunter.io/developer/1498439493) |

## What reviewers say

### OzCharge BM12

[App page](https://appshunter.io/ios/app/ozcharge-bm12/id1447576898)

Monitor your car battery's real-time voltage and test its cranking and charging systems. View all battery data directly on your mobile device via Bluetooth connection.

**Highlights:** Real-time voltage monitoring, Cranking system testing, Charging system testing, Bluetooth data transfer, Mobile device display

**Features:** macOS Compatibility

**In-app purchases:** none


### MemoMapper

[App page](https://appshunter.io/ios/app/memomapper/id1555358812)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OzCharge BM12 free?

OzCharge BM12 is free to download, with no in-app purchases.

### Is MemoMapper free?

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

### Do OzCharge BM12 or MemoMapper have ads?

Neither OzCharge BM12 nor MemoMapper shows ads.

### Which is updated more often, OzCharge BM12 or MemoMapper?

OzCharge BM12 ships an update every 2 months, and MemoMapper every 25 months. Most recently, OzCharge BM12 was updated on November 2, 2026 and MemoMapper on October 25, 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.*