MathSprintScrew

You can customize daily greeting cards for yourself or your friends and family.
Basic Functions:
Login/register/delete account, update user information;
Bind sender/receiver by code scanning;
New timings, including both parties' nickname input, sending frequency and time selection, city and other information;
Receive push cards on daily timing, view history cards;
Value-added features:
Unpaid: you can only set the receiver as yourself, maximum three timings
Basic version: you can send cards to other people, up to three timers.
Advanced version: you can send cards to other people, you can customize the background image, unlimited timers.
Signature Edition: you can send cards to other people, you can customize the background image, you can set the AI text generation function, unlimited timers.
Details of specific paid features:
Payment cycle: Monthly
Price: Basic: $1.99/month; Premium: $3.99/month; Platinum: $9.99/month
Automatic subscription cycle: Monthly, until canceled by the user
End User License Agreement follows Apple's standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://dm.iuv520.com/views/en/privacy
User Agreement: https://dm.iuv520.com/views/en/tos