App doesn’t work.
The age of technology and the simplest things are over complicated to the point they don’t work. Does everything have to be app based? And of course it’s always a treat dealing with Holley customer service.
Free
In-App Purchases
About
This utility calibrates your Jeep Wrangler's speedometer after tire or gear changes. It offers TPMS adjustment and is designed for JK, JL, and JT models.
✓Speedometer calibration
✓Tire size adjustment
✓Gear ratio adjustment
✓TPMS on/off
✓Supports JK, JL, JT models
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What's New in Flashcal+
1.3.0
July 8, 2026
Adding support for Ford Bronco® Updating store photos, description to match.
5
In-App Purchases
$274.99
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FAQ
What vehicles does Flashcal+ support?
Flashcal+ is designed for Jeep Wrangler models, specifically the JK and JL generations, as well as the JT Gladiator. It helps calibrate your speedometer after modifications.
How does Flashcal+ help with tire and gear changes?
After changing tires, wheels, or gears on your Jeep Wrangler, your speedometer may become inaccurate. Flashcal+ allows you to recalibrate it to reflect your vehicle's true speed.
Can Flashcal+ adjust tire pressure monitoring systems?
Yes, Flashcal+ offers the functionality to turn the Tire Pressure Monitoring System (TPMS) on or off. This is useful when using non-standard tire sizes.
Is Flashcal+ free to use?
Flashcal+ is available for free download. The app does not have advertisements, and based on the provided data, there are no in-app purchases mentioned.
What is the rating for Flashcal+?
Flashcal+ has received a perfect 5.0-star rating based on one review. This indicates a highly positive initial user reception.
When was Flashcal+ last updated?
The latest version of Flashcal+ is 1.2.9, and it was last updated on May 27, 2026. This suggests the app is actively maintained.
What age rating does Flashcal+ have?
Flashcal+ is rated for users aged 4 and older. This is a common rating for utility applications that do not contain mature content.
What devices are compatible with Flashcal+?
Flashcal+ is supported on iPhone and iPod devices. It is not currently listed as available for Android or other tablet platforms.
