ChkOBD OBD2 Analyzer vs Troodon OBD
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Troodon OBD
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Unlock the full potential of your vehicle with Troodon OBD. Features include*: • ECU identification • Reading and clearing DTCs from ECU memory • Vehicle parameters monitoring • Visual data representation (graph mode) • Data logging for any number of parameters • Actuator testing procedures • Additional features • ECU configuration/adaptation • Sensor calibration • DPF regeneration • Component replacement functions and configurations • Service and oil change interval reset • Various other procedures specific for each vehicle This app is compatible with following devices: • Troodon OBD Basic • Troodon OBD Pro Whether you're a DIY enthusiast or a seasoned mechanic, Troodon OBD simplifies complex tasks, making advanced diagnostics easy and accessible. * Feature compatibility depends on the specific vehicle and the range of software installed on your diagnostic device.
Screenshots
Verdict
The clearest difference is in-app purchases: Troodon OBD at none against ChkOBD OBD2 Analyzer's 4. Troodon OBD also leads on update cadence (every 3 weeks vs every 3 months). ChkOBD OBD2 Analyzer's advantage is iOS requirement (13.0 vs 15.0). On price, ads and device support 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. Troodon OBD asks for nothing beyond the download.
ChkOBD OBD2 Analyzer ships an update every 3 months, Troodon OBD every 3 weeks. The most recent releases landed on October 13, 2026 and October 17, 2026 respectively.
| Parameter | ChkOBD OBD2 Analyzer | Troodon OBD |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (4 ratings) — better | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 63 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Check On-Board Diagnostics LLC | DevCom spol. s r.o. |
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
Troodon OBD
No in-app purchases
Questions
Is ChkOBD OBD2 Analyzer free?
Is Troodon OBD free?
Do ChkOBD OBD2 Analyzer or Troodon OBD have ads?
Which is updated more often, ChkOBD OBD2 Analyzer or Troodon OBD?
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