Terms of Service

Last updated: 2 November 2026

By using TankMate you agree to these terms.

1. What TankMate is

TankMate is a tool for tracking bookings, journeys and fuel costs on a shared car. It is provided for personal, non-commercial use.

2. Estimates only

Cost, distance, MPG and fuel price figures are estimates based on what you enter and on third-party data, including government fuel price data and Apple Maps, which may be inaccurate, incomplete or out of date. Car details and MOT dates looked up by registration come from the DVSA's records and may also be incomplete or out of date; check your MOT due date with the official GOV.UK service before relying on it. TankMate is not financial, legal or tax advice, and you should check figures before relying on them to settle any payment.

3. Your arrangements with others

Any agreement about who pays for what, or who can use the car when, is between you and the other people using it. TankMate helps you record and calculate; it does not create, enforce or mediate those arrangements.

TankMate never handles or moves money. A payment you record in the app is a note of money you paid some other way. A pay-me link opens your own payment provider, such as your bank, and that payment is between you, the other person and that provider.

If you share a car, everyone who joins can see and change its bookings, journeys, fill-ups, payments and balances. Only share the invite link with people you trust with that.

4. TankMate Plus

• What you can buy. TankMate Plus is available as a monthly or yearly subscription that renews automatically, or as a one-off Lifetime purchase. The price is shown in the app and on the App Store before you buy, and Apple takes payment from your Apple ID.
• One purchase covers the car. Everyone on the car has Plus, including anyone who joins later.
• Sharing the cost. The buyer chooses who shares the cost: everyone on the car, some of them, or nobody. Each subscription payment is added to the balances as a cost the buyer has paid; a Lifetime purchase is added once, when it's bought. The buyer can change who shares it, and the change applies from the next payment, never to past ones. Settling these amounts is up to the people on the car (section 3).
• Subscriptions renew automatically unless you cancel at least 24 hours before the end of the current period. You can cancel in your iPhone's Settings → your name → Subscriptions, or from Manage Subscription in TankMate.
• Free trial. If a free trial is offered, you're charged when it ends unless you cancel before then.
• Lifetime is a single payment, not a subscription, and never renews. It gives the car Plus for as long as TankMate offers Plus.
• On a new phone, use Restore Purchases in TankMate.
• If a subscription ends, everything you added stays visible, but you can't add new Plus items.
• Refunds are handled by Apple under its own terms. A refunded purchase ends the Plus it paid for and removes its cost from the balances.

5. Your responsibilities

You are responsible for the accuracy of what you enter, for keeping your device secure, and for driving safely. Do not use the app while driving.

6. No warranty and limits on liability

TankMate is provided "as is", without promises that it will be error-free or always available. To the fullest extent allowed by law, the developer is not liable for losses arising from using the app, including disputes over money or bookings, or data loss. Nothing in these terms limits liability that cannot legally be limited, including for death or personal injury caused by negligence, or fraud.

7. Changes to the app and these terms

Features may change or be removed, and these terms may be updated. Continuing to use TankMate after an update means you accept the new terms.

8. Governing law

These terms are governed by the law of England and Wales.

9. Contact

tankmate@icloud.com