# Car Scanner OBD2 ELM: Obd Mary — Car Diagnostic App > Universal OBD2 vehicle scanner for diagnosing car electronic control modules. (iPhone/iPad app by Ihar Katkavets.) - Source: https://appshunter.io/ios/app/car-scanner-obd2-elm-obd-mary/id1456542840 (this page in markdown: same URL + `.md`) - Developer: [Ihar Katkavets](https://appshunter.io/developer/1439778280) - Category: Utilities, Lifestyle - Price: Free with in-app purchases - Rating: 4.70/5 from 39 App Store ratings · 78 written reviews indexed - Age rating: 4+ - Requires: iOS 15.0 · 24 MB - Languages: American English, Albanian, Bulgarian, Czech, Danish, Dutch, Finnish, French (France), German (Germany), Greek and 15 more - Released: 2022-08-27 - Data updated: 2026-09-01 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/car-scanner-obd2-elm-obd-mary/id1456542840/reviews.md ## What is Car Scanner OBD2 ELM? Obd Mary is a universal vehicle scanner which works according to OBD2 standard. The application works with WiFi and Bluetooth 4.0 LE adapters. Requirements: 1. You need ELM327 Bluetooth 4.0 LE or Wi-Fi adapter to connect to a vehicle using this application. 2. Your vehicle can contain some ECUs (electronic control modules), so don't forget to check all ECUs. 3. ELM adapters version 2.1 are often can be corrupted, so try to choose version 1.5 if you have a chose. Quick start guide for ELM327 adapters: 1. Download the app 2. Plug in ELM327 adapter into 16-pin diagnostic connector in your vehicle 3. Switch ON the ignition 4. Discover your WiFi or Bluetooth ELM adapter in the app settings 5. Select discovered ELM327 adapter and press 'Connect' You can make scanning and diagnosing using the application Obd Mary and Wi-Fi ELM327/BLE ELM327. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Key features - Universal OBD2 scanning - Works with WiFi adapters - Works with Bluetooth 4.0 LE adapters - Diagnose electronic control modules (ECUs) - Quick start guide for ELM327 adapters ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Full Edition | $9.99 | one-time | ## Recent user reviews (10 of 78) All indexed reviews: https://appshunter.io/ios/app/car-scanner-obd2-elm-obd-mary/id1456542840/reviews.md ### 5/5 — Супер приложение *2026-08-28* Приложение супер, все понятно сделано для людей! Спасибо ### 5/5 — Нормально за адекватный прайс) *2026-08-23* Понятное простое приложение для диагностики авто. Можно посмотреть ошибки и сбросить их. А также некоторые параметры по общему протоколу EOBD. Специфические параметры конкретных автомобилей не отображает, например давление топлива или скважность импульсов на бензонасос. Обороты, положение дросселя, коррекции по топливу и ещё некоторые параметры можно смотреть. За небольшую стоимость пойдёт. ### 5/5 — Хорошо *2026-08-03* Хорошее приложение ### 5/5 — Супер *2026-07-20* Отличное приложение! Огромное спасибо разработчикам ### 3/5 — Обычно *2026-07-14* Платно как и все Мало что можно сделать ### 4/5 — Good *2026-07-13* Пока не разобрался ### 5/5 — Great *2026-07-09* I like it ### 5/5 — Приложение устранило найденные ошибки *2026-07-02* Огонь! ### 5/5 — супер *2026-06-29* сделайте возможность доната, пожалуйста, - премиум не нужен, а поблагодарить немного хочется ### 5/5 — Простота *2026-06-18* Приложение отличное, все легко и просто подключается быстро. Все удобно и понятно. ## Frequently asked questions about Car Scanner OBD2 ELM ### What does Car Mate do? Car Mate is a universal vehicle scanner that operates using the OBD2 standard. It allows you to scan and diagnose your car's electronic control modules (ECUs) by connecting to your vehicle via compatible WiFi or Bluetooth adapters. ### What hardware do I need to use Car Mate? To use Car Mate, you will need an ELM327 Bluetooth 4.0 LE or Wi-Fi adapter. This adapter plugs into your vehicle's 16-pin diagnostic connector and allows the app to communicate with your car's systems. ### Is Car Mate free to use? The application is free to download and use, but it does have in-app purchases and advertisements. You will need to purchase a compatible ELM327 adapter separately to connect to your vehicle. ### How do I connect Car Mate to my car? After plugging your ELM327 adapter into your car's diagnostic port and turning on the ignition, you can discover and select your WiFi or Bluetooth adapter within the app's settings. Once selected, press 'Connect' to establish a connection. ### What are the common use cases for Car Mate? The primary use case for Car Mate is to scan and diagnose potential issues within your vehicle's electronic control modules (ECUs). This can help identify problems, monitor vehicle performance, and understand diagnostic trouble codes. ## Version history (last 5 releases) ### 1.8.5 — 2026-09-01 Bugs fixing and stabilization ### 1.8.4 — 2026-08-28 Bugs fixing and stabilization ### 1.8.3 — 2026-08-06 Bugs fixing and stabilization ### 1.8.2 — 2025-09-17 Bugs fixing and stabilization ### 1.8.1 — 2025-09-03 Bugs fixing and stabilization ## Apps similar to Car Scanner OBD2 ELM | App | Rating | Price | Category | | --- | --- | --- | --- | | [Car Scanner ELM OBD2](https://appshunter.io/ios/app/car-scanner-elm-obd2/id1259933623) | 4.8 (31,859) | Free | Utilities | | [OBD2 Car Scanner - EOBD Facile](https://appshunter.io/ios/app/obd2-car-scanner-eobd-facile/id713921569) | 4.6 (5,015) | Free | Utilities | | [FourStroke OBD2 Car Scanner](https://appshunter.io/ios/app/fourstroke-obd2-car-scanner/id946722526) | 4.7 (922) | Free | Utilities | | [MotorData OBD ELM car scanner](https://appshunter.io/ios/app/motordata-obd-elm-car-scanner/id1503589009) | 4.6 (48) | Free | Utilities | | [OBD2 Scanner \| OBD Auto Doctor](https://appshunter.io/ios/app/obd2-scanner-obd-auto-doctor/id908897183) | 4.4 (6,148) | Free | Utilities | | [Carista OBD2](https://appshunter.io/ios/app/carista-obd2/id954363569) | 4.6 (4,078) | Free | Utilities | ## Related topics [carmate](https://appshunter.io/ios/topics/carmate) · [cqr scanner](https://appshunter.io/ios/topics/cqr-scanner) · [scanner elm obd2](https://appshunter.io/ios/topics/scanner-elm-obd2) · [kia obd app](https://appshunter.io/ios/topics/kia-obd-app) · [bluetooth scanner car](https://appshunter.io/ios/topics/bluetooth-scanner-car) · [car scanner free](https://appshunter.io/ios/topics/car-scanner-free) · [odb](https://appshunter.io/ios/topics/odb) · [incardoc](https://appshunter.io/ios/topics/incardoc) · [obd2 wifi](https://appshunter.io/ios/topics/obd2-wifi) · [car scanner elm obdii](https://appshunter.io/ios/topics/car-scanner-elm-obdii) --- *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 2026-09-01.*