Dr. Prius is an app developed to help professional Toyota/Lexus hybrid repair shop or owners to examine the health of the High Voltage battery. It turns your mobile device into a professional diagnostic equipment that usually cost thousand of dollars, it is being trusted by 35+ professional repair shops around the world.

Dr. Prius perform test and provides access to all the relevant battery information to quickly help identify problems with a simple touch on the screen of a smartphone, do not fall victim to bad battery, test the battery and print the certificate to prove the health of the battery system.

Note: This app requires a ELM327 Bluetooth OBD interface to communicate with your hybrid vehicle, most of the cheap clone ELM327 will not work due to inability to switch between ECUs in your vehicle. Please visit for more detail or feel free to email us for any adapter compatibility question.

Some useful features:

1. Real-time battery monitor with clever charts and numbers.
2. Life expectancy test with proprietary algorithm to find out battery remaining life.
3. Full battery test to run diagnostic on battery system.
4. Print or share test certificate with customer.
5. Read error codes, reset error codes in a breeze.
6. Disable or enable the reverse beep, seat belt beep, adjust battery fan speed and more.
7. Find nearby reputable hybrid repair shop.

Current supported model:
1. 2016~2018 Prius Gen4
2. 2009-2015 Prius Gen3
3. 2003-2009 Prius Gen2
4. Auris
5. Aqua
6. Prius C
7. Camry Hybrid
8. Avalon Hybrid
9. Highlander Hybrid
10. Lexus CT200h
11. Lexus ES300h
12. Lexus HS250h
13. Lexus RX400h
14. Lexus RX450h
15. Lexus GS450h
16. Lexus LS600h

Any feedback or feature request please reach out to

What's New

Version 3.0.6

1. Beta support 1997~2003 Prius Gen1
2. Prius V Lithium support
3. Faster data transmission for all Gen4
4. Bug fixes
***IMPORTANT*** Not all OBD2 adapters can read battery data, please check out the buying guide at

Ratings and Reviews

4.1 out of 5
16 Ratings
16 Ratings

What does 73% battery life means on life test?

I found that the most challenge part is finding a Bluetooth adapter that work for iOS and also work for Prius, thankfully the link provided by developer helps. After running the life test it says 73%, is it good or bad?

Developer Response

Hi there, 73% means your battery is in good condition, you should worry when the number is lower than 40% (it might takes years to get to that low)


The best App for hybrid vehicles on whole AppStore!

I find this App the most comprehensive tool for testing hybrid vehicles. The app provides tons of important information about vehicle parameters such as complete battery and temperature statistics as well as it’s life expectancy and much more.

Developer Response

Thank you for the support, we will continue to improve the App.


Prius and Camry Hybrid

Great product. Works as long as you buy the correct OBD2 adapter. Works on my iPhone 8+. It will time out at the beginning and once you press it he start button on the Prius or Camry Hybrid, it will connect and the app works great. Thanks for the great support.

Developer Response

yes, need to make sure the car is in ready mode then engage the App, we will continue to improve the App to add more functionalities.


Big Wheel Tech Inc
31.6 MB
Requires iOS 9.3 or later. Compatible with iPhone, iPad, and iPod touch.
English, Arabic, French, Italian, Japanese, Polish, Russian, Simplified Chinese, Spanish, Swedish, Traditional Chinese
Age Rating
Rated 4+
© 2018 Big Wheel Tech
In-App Purchases
  1. Basic package $12.99
  2. Shop special $29.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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