Multi vs OzCharge BM12
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Multi
Monitor multiple 12V vehicle batteries simultaneously with this app. It stores data permanently, allows export and sharing, and provides trip records and expense management. Receive notifications when near your connected devices.
- Monitor multiple 12V vehicle batteries
- Supports 4 device connections
- Permanent data storage
- Data export and sharing
- Trip record tracking
- Vehicle expense management
- Proximity notifications
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Multi-Battery Monitor(BLE) is a vehicle battery management software, which is compatible with last generation product BM2. It can support 4 different devices connection at one time, conveniently manage multi 12V vehicle battery. Data stored permantly and can be exported or shared by email. User can receive notification when get close to device. What's more, it has trip record and vehicle expense management function.
OzCharge BM12
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.
- Real-time voltage monitoring
- Cranking system testing
- Charging system testing
- Bluetooth data transfer
- Mobile device display
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OzCharge BM12 is an application for vehicle battery,which can let them know the real-time voltage of car battery. It helps users to know the battery fully by testing cranking and charging system voltage. All of the datas can be showed on mobile through bluetooth.
Screenshots
Verdict
The clearest difference is review sentiment: OzCharge BM12 at 100% against Multi's 51%. OzCharge BM12 also leads on price (Free vs $9.99) and iOS requirement (12.0 vs 15.0). On update cadence, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
OzCharge BM12 is free to download; Multi costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Multi ships an update every 3 months, OzCharge BM12 every 6 weeks. The most recent releases landed on September 23, 2026 and June 11, 2026 respectively.
| Parameter | Multi | OzCharge BM12 |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 3.3 (8 ratings) — better | — |
| Positive reviews | 51.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 8 — better | — |
| Update frequency | Every 3 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod, Apple Watch — better | iPhone, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 16 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Amoeba New Energy Co., Ltd. | Autech Australia Pty. Ltd. |
Customer experience
Multi
OzCharge BM12
In-app purchases
Multi
No in-app purchases
OzCharge BM12
No in-app purchases
