Support
Questions, problems or ideas for TireDial? Write to hello@tiredial.com — we usually answer within a few days. It helps to include your iPhone model, iOS version and the TireDial version (Settings → About → Version).
Get TireDial Pro on a new iPhone
TireDial Pro is a one-time purchase tied to your Apple Account. On your new iPhone, sign in with the same Apple Account, open TireDial and go to Settings → TireDial Pro → Restore Purchases. Pro is unlocked again at no extra cost.
Your bikes, presets and history are stored only on your iPhone. They move to a new iPhone with an iCloud or computer backup, or when you transfer your data during setup.
Purchases and refunds
Purchases are processed by Apple, so we can't see or change your payment. To request a refund, use reportaproblem.apple.com. If a purchase is shown as pending (for example with Ask to Buy), TireDial unlocks Pro automatically once it's approved.
Your data
TireDial has no account and no server. Everything you enter stays on your iPhone. To delete all of it, delete the app. Details are in the privacy policy.
Frequently asked questions
Is TireDial free?
Yes. Unlimited calculations for road, gravel and MTB, every input, the full model and one saved bike are free. TireDial Pro is a one-time purchase (no subscription) that adds unlimited bikes, ride presets, saved pressures and unlimited history.
Is this the "correct" pressure?
It's a well-founded starting point, not a manufacturer specification. Fine-tune by feel and always follow the limits of your tire and rim manufacturers. How the result is calculated is explained in the methodology.
Does it work with tubeless and hookless rims?
Yes. Choose tubeless, butyl or latex/TPU tubes. Hookless rims have their own maximum pressures: enter your rim and tire limit and TireDial never recommends more than the lowest one.
Why is the rear pressure higher than the front?
Most of your weight sits over the rear wheel, so it carries more load and needs a little more pressure. You can change the weight distribution under Fine tune.
How do I switch between bar and PSI?
In Settings → Units. The result always shows the other unit underneath, too.
Does TireDial need an internet connection?
No. Everything works offline. Only buying or restoring TireDial Pro goes through the App Store.
Which devices are supported?
iPhone with iOS 17 or later.
Always follow the pressure limits specified by your tire and rim manufacturers. See also the safety notice.