Billdrop support
Email binarydatatechnology151@gmail.com, or in the app open Settings → Contact support (it adds your app and Android version so we can help faster).
Subscriptions
Plans are billed by Google Play. To cancel, change your payment method or see your renewal date, open Settings → Plan & billing → Manage subscription, or Google Play → Payments & subscriptions → Subscriptions. On a new phone, sign in with the same Google account and tap Restore purchases. Refunds follow Google Play’s refund policy.
Your data
Billdrop has no account and keeps your invoices only on your phone. Move to a new phone with Settings → Backup & restore. To delete everything, use Settings → Delete all data or uninstall the app — we hold no copy on any server.
Common questions
Help & FAQ is built into the app under Settings → Help & FAQ.