Diagnosis vs Mini OBDII
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Diagnosis
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Diagnosis is a smart diagnostic system on demand working with iPhone or iPad. It combines vast vehicle coverage, strong diagnostic functions and many special functions. It has following features: 1. Comprehensive vehicle coverage, covers most American, Asian, European and Australian cars. 2. Full system diagnosis, with many special functions available based on users' needs. 3. Small and easily portable. 4. Bluetooth wireless connection.
Mini OBDII
This app connects to your vehicle via Bluetooth or WiFi to perform diagnostics and monitor driving. It reads and clears fault codes, analyzes performance, and tracks your travel data. Supports multiple languages and high-speed data transmission.
- Fault code reading and clearing
- Instrument panel monitoring
- Performance testing
- Travel analysis
- High-speed data transmission
- Multi-language support
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Mini OBDII is a car diagnostic and monitoring application,support English,Español,Русский,Deutsch,Français,日本語,中文. Through iPhone and iPad, use Bluetooth/WiFi to communicate with the vehicle terminal to complete fault diagnosis and driving assistance functions. It has automobile detection and analysis functions such as fault code reading and clearing, instrument panel, performance test, and travel analysis. It also supports high-speed data transmission and has the advantages of low power consumption and ultra-power saving. caution: 1. Support the adapter that runs through WiFi and Bluetooth 4.0. 2. The parameters supported by each vehicle are different, which has nothing to do with Mini OBDII, but is related to the vehicle control unit.
Screenshots
Verdict
The clearest difference is iOS requirement: Diagnosis at 8.0 against Mini OBDII's 11. On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Diagnosis ships an update monthly, Mini OBDII every 3 weeks. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | Diagnosis | Mini OBDII |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.7 (10 ratings) — better |
| Positive reviews | — | 37.5% of reviews |
| Number of ratings | — | 10 — better |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 11 |
| Further details — not scored | ||
| Size | 550 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | 翔宇 金 | Shenzhen Chaoyue Technology Development Co.,Ltd |
In-app purchases
Diagnosis
No in-app purchases
Mini OBDII
No in-app purchases
Questions
Is Diagnosis free?
Is Mini OBDII free?
Do Diagnosis or Mini OBDII have ads?
Which is updated more often, Diagnosis or Mini OBDII?
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