# Phone apps > BillingMart on iPhone and Android: sign in, subscriptions, restoring purchases and cancelling. Source: https://support.billingmart.com/phone-apps Updated: 2026-10-17 - [Sign in on your phone](https://support.billingmart.com/phone-apps/sign-in-on-your-phone.md): The ways to sign in on the iPhone and Android apps, what happens when you have a second sign-in step, and how to stay signed in. - [Time and mileage on your phone](https://support.billingmart.com/phone-apps/time-and-mileage-on-your-phone.md): Start and stop a timer, add time or mileage by hand, and see what the phone records. The apps do not record trips by GPS. - [Approve requests on your phone](https://support.billingmart.com/phone-apps/approve-on-your-phone.md): How an Agent or assistant request reaches your phone, what the app shows, what it asks you to confirm, and which links open the app. - [Notifications on your phone](https://support.billingmart.com/phone-apps/notifications-on-your-phone.md): What the apps notify you about, how to choose where you hear about it, and what to check when alerts do not arrive.