iOBD2 vs Authorized Unlock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iOBD2
This app serves as a reference for standard Diagnostic Trouble Codes (DTCs) found in vehicles. It helps users understand fault codes generated by a car's onboard computer, aiding in problem diagnosis.
- Diagnostic Trouble Code reference
- Fault code lookup
- Vehicle system diagnostics
- Problem identification
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Standard Diagnostic Trouble Codes reference book. A Diagnostic Trouble Code is set in a vehicle's on-board computer when a fault occurs in any monitored system. The code number corresponds to the type of fault, and can be used to diagnose the problem.
Authorized Unlock
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The app can be used for real-time monitoring, track query and unlocking of authorized devices.
Screenshots
Verdict
The clearest difference is iOS requirement: iOBD2 at 4.3 against Authorized Unlock's 12.0. 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.
iOBD2 ships an update every 3 months, Authorized Unlock every 4 months. The most recent releases landed on October 20, 2026 and October 4, 2026 respectively.
| Parameter | iOBD2 | Authorized Unlock |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (19 ratings) — better | — |
| Positive reviews | 28.6% of reviews | — |
| Number of ratings | 19 — better | — |
| Update frequency | Every 3 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 4.3 — better | 12.0 |
| Further details — not scored | ||
| Size | 44 MB | 80 MB |
| Age rating | 4+ | 4+ |
| Developer | 翔宇 金 | SHENZHEN JOINT TECHNOLOGY CO.,LTD |
In-app purchases
iOBD2
No in-app purchases
Authorized Unlock
No in-app purchases
Questions
Is iOBD2 free?
Is Authorized Unlock free?
Do iOBD2 or Authorized Unlock have ads?
Which is updated more often, iOBD2 or Authorized Unlock?
Other comparisons
