Mobilscan OBD vs ChkOBD OBD2 Analyzer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mobilscan OBD
This app connects to your vehicle's OBD system via a WiFi adapter to display sensor data and diagnostic trouble codes. It includes a simulator for testing functionality without a physical connection.
- Retrieves sensor values
- Displays fault codes
- OBD WiFi adapter communication
- Built-in vehicle simulator
- Supports OBD-compliant vehicles
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Mobilscan OBD retrieves and displays sensor values and fault codes from an OBD-compliant vehicle. Mobilscan OBD communicates with the vehicle through an OBD WiFi adapter, which must be purchased separately. A demonstration of the functionality of Mobilscan OBD is possible through the built-in vehicle simulator. A suitable OBD WiFi adapter is available from http://www.mobilscan.dk and selected retailers.
ChkOBD OBD2 Analyzer
Connect your iPhone or iPad to your car's engine to view vital data. Access basic engine values for free, with in-app purchases for advanced diagnostics, smog check readiness, VIN analysis, and error decoding.
- View engine values
- In-app purchase for advanced data
- Smog Check Assistant
- VIN Analyzer
- Error Decoder and Reset
- Bluetooth adapter compatibility check
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ChkOBD let you connect your iPhone and iPad to your Car and view the most important Engine values in a very intuitive user interface in an appealing user-friendly way. ChkOBD connects wirelessly to an ELM237 enabled OBDII - Bluetooth adapter which is readily available from many 3rd party vendors. From this free application that let you have access to the basic “Engine Values”, you will have In-App purchase to access additional information such as : . Advanced Engine Values, an extended choice of sensors available on your car, that you can select and monitor. The available Engine Value from your car, are all listed in a “grey” mode, so, you will have no surprise of what you will get (or not get !) after the In App purchase . Smog Check Assistant, to know if your car will pass the next Smog Check at the state official station, or the App will let you know what needs to be fixed, before driving there, . VIN Analyzer, will let you know what information is in the “government file” from your car, including date and place of manufacturing, . Error Decoder and Reset, to know what is the current error that is in the Memory of the computer of your car and let you have a way to try to reset this error (Normally, it comes back on, if the cause of the error is not mechanically fixed). This is an error scan that is going through about 4'000 possible errors. Usually all these information will be read from all car that have been sold in the USA after 2005. The fact that these applications are offered from inside a free app, in our side, from this free app, we are able to check before any of your purchase, that your car and your Bluetooth adapter will be 100% compatible with these applications. We are using this technology to try to provide to our customers the best possible satisfaction.
Screenshots
Verdict
The clearest difference is rating: ChkOBD OBD2 Analyzer at 3.0 against Mobilscan OBD's 1.5. Mobilscan OBD's advantage is in-app purchases (none vs 4) and iOS requirement (10.0 vs 13.0). On price, ratings volume, update cadence and ads 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. ChkOBD OBD2 Analyzer sells 4 in-app purchases, starting at $4.99 per month. Mobilscan OBD asks for nothing beyond the download.
ChkOBD OBD2 Analyzer holds the better App Store score, 3.0 against 1.5. Both are backed by a comparable volume of ratings — 2 and 4 respectively.
Mobilscan OBD ships an update every 2 months, ChkOBD OBD2 Analyzer every 3 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.
| Parameter | Mobilscan OBD | ChkOBD OBD2 Analyzer |
|---|---|---|
| Price | Free | Free |
| Rating | 1.5 (2 ratings) | 3.0 (4 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 | 4 — better |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 7 MB | 63 MB |
| Age rating | 4+ | 4+ |
| Developer | Mobilscan | Check On-Board Diagnostics LLC |
Customer experience
Mobilscan OBD
ChkOBD OBD2 Analyzer
In-app purchases
Mobilscan OBD
No in-app purchases
ChkOBD OBD2 Analyzer
- Smog Check Assistant$4.991 Month
- VIN Analyzer$1.99
- Error Analyzer$2.99
- Advance Engine Values$4.99
Questions
Is Mobilscan OBD free?
Is ChkOBD OBD2 Analyzer free?
Which has better reviews, Mobilscan OBD or ChkOBD OBD2 Analyzer?
Do Mobilscan OBD or ChkOBD OBD2 Analyzer have ads?
Which is updated more often, Mobilscan OBD or ChkOBD OBD2 Analyzer?
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