# Ultimate9 BM > Bluetooth car battery monitor for real-time voltage and system testing. (iPhone/iPad app by 俊华 邹.) - Source: https://appshunter.io/ios/app/ultimate9-bm/id1525506062 (this page in markdown: same URL + `.md`) - Developer: [俊华 邹](https://appshunter.io/developer/1276442287) - Category: Utilities - Price: Free - Rating: 5.00/5 from 3 App Store ratings · 7 written reviews indexed - Age rating: 4+ - Requires: iOS 10.0 · 26 MB - Languages: Arabic, Czech, English, French, German, Italian, Polish, Romanian, Russian, Chinese and 2 more - Released: 2020-07-30 - Data updated: 2026-06-04 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/ultimate9-bm/id1525506062/reviews.md ## What is Ultimate9 BM? Ultimate9 BM is an application for vehicle battery,which can let them know the real-time voltageof 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. ## Key features - Real-time battery voltage monitoring - Cranking system testing - Charging system testing - Bluetooth data transfer - View data on mobile device ## Recent user reviews (7 of 7) All indexed reviews: https://appshunter.io/ios/app/ultimate9-bm/id1525506062/reviews.md ### 1/5 — Apple phones will find this app painful *2024-07-14, version 1.0* Within 5 mins of using this app I’ve found 3 major visual bugs. The first issue is that you can’t see what you’re typing in one scenario, because of white text on white background (trying to rename connected devices.) Secondly, you can’t save the name, even if you could see it (green tick doesn’t save and instead takes you back to the Home Screen.) Additionally, while trying to report the errors in the internal “feedback” option, I was unable to attach a screenshot of the above problems because the image selection screen is half finished (keyboard overlay covering up the image I want to select, black text on black background for you can’t read the image folders names.) Very disappointing/underwhelming app on iOS for a potentially great product. Quite obviously this is a lack of testing problem. ### 4/5 — Great! *2024-06-02, version 1.0* Great device! Would be good if the trip data was exportable and had start and end lat/long and approx address. Also, would love the notifications to have voltage aswell as percentage. Still great product! ### 2/5 — No updates on app or firmware on device itself *2022-12-28, version 1.0* No updates on app or firmware on device itself for the last 2 years. No response to my questions either. If you just need to know the voltage, it should be ok but do not expect much from this device or app. ### 5/5 — Super easy *2022-08-17* Both the Ap and device are easy install. After installing the AP then the device, my phone was in the car and it automatically connected. For an auxiliary battery all you may see as a feature is the charge and when the battery is being drawn from or discharge. You will not see cranking use or tests. ### 5/5 — BRILLIANT! *2022-01-02, version 1.0* Such an easy app to use, to set alarms if/when reaching low levels & to keep a nice data stream going back months! Nice stuff. ### 4/5 — Top unit for agm camping battery *2021-12-28, version 1.0* Works well used millions of times failed once due to loose connection other than that magical ### 1/5 — Not worth the effort *2021-08-27, version 1.0* Useless! ## Frequently asked questions about Ultimate9 BM ### What is Ultimate9 BM used for? Ultimate9 BM is a utility application designed to monitor your vehicle's car battery. It allows you to view the real-time voltage and test the cranking and charging system voltages. ### How does Ultimate9 BM connect to my car battery? The application connects to your car battery data via Bluetooth. This allows you to see all the collected battery information directly on your mobile device. ### What kind of tests can Ultimate9 BM perform? Ultimate9 BM can test the cranking system voltage and the charging system voltage of your car battery. This helps you understand the overall health and performance of your battery. ### What devices is Ultimate9 BM compatible with? Ultimate9 BM is supported on iPhone and iPod devices. It is rated for ages 4 and up. ### How often is Ultimate9 BM updated? The latest version of Ultimate9 BM is 1.0, which was last updated on July 31, 2020. The app was initially released on July 30, 2020. ### Is Ultimate9 BM free to use? Yes, Ultimate9 BM is available for free. There are no in-app purchases or advertisements associated with this application. ### What is the user feedback on Ultimate9 BM? Ultimate9 BM has received positive user feedback, with an average rating of 5.0 stars from 3 ratings. This suggests a high level of user satisfaction with its functionality. ## Version history (last 1 release) ### 1.0 — 2020-07-31 No release notes. ## Apps similar to Ultimate9 BM | App | Rating | Price | Category | | --- | --- | --- | --- | | [供应链过程管理](https://appshunter.io/ios/app/id1448695400) | — | Free | Utilities | | [TurboLock Plus](https://appshunter.io/ios/app/turbolock-plus/id1440936480) | 2.9 (32) | Free | Utilities | | [BRAUMACH](https://appshunter.io/ios/app/braumach/id6740316202) | — | Free | Utilities | | [OzCharge BM12](https://appshunter.io/ios/app/ozcharge-bm12/id1447576898) | — | Free | Utilities | | [Battery Monitor BM2](https://appshunter.io/ios/app/battery-monitor-bm2/id1115492033) | 4.2 (52) | Free | Utilities | | [BM6](https://appshunter.io/ios/app/bm6/id1561912036) | 3.1 (15) | Free | Utilities | ## More apps by 俊华 邹 - [BT1000](https://appshunter.io/ios/app/bt1000/id1273595172) - [Battery Guard BT3000](https://appshunter.io/ios/app/battery-guard-bt3000/id1435426438) - [Roadi IC1](https://appshunter.io/ios/app/roadi-ic1/id1435465085) - [Live Monitor](https://appshunter.io/ios/app/live-monitor/id1465680093) - [Matson Monitor](https://appshunter.io/ios/app/matson-monitor/id1476217094) - [BM12V](https://appshunter.io/ios/app/bm12v/id1477779532) All apps by 俊华 邹: https://appshunter.io/developer/1276442287 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-04.*