ShiYu · Card Butler
Never miss a repayment or important reminder again.
Manage credit card repayments, recurring bills, and scheduled life tasks with clear reminders built for iPhone and Android.
Traditional notes and simple to-do apps are easy to ignore. ShiYu is designed for reminders that matter — credit card repayments, rent, car loans, utilities, and other tasks that should not quietly disappear.
Notifications require system permission and may be affected by device settings, battery optimization, Focus modes, or platform restrictions.
Why ShiYu exists
Important reminders should not be easy to miss.
Do one useful thing exceptionally well.
Ordinary notes and simple to-do apps are easy to ignore. They help you write things down, but they often fail to make important moments feel urgent.
ShiYu is designed for bills, repayments, rent, utilities, and other tasks that need stronger attention. Once a reminder is scheduled, ShiYu can notify you through alarm-style local reminders even when the app is not open.
Alarm-style reminders require notification permission and may depend on system settings, battery restrictions, Focus modes, and platform permissions.
What ShiYu
helps you stay on top of
Not every reminder belongs in a simple note.
Credit card repayments
Keep repayment dates visible and receive reminders before bills are due.
Rent
Set monthly reminders for rent and recurring housing payments.
Car loans
Track scheduled loan payments that repeat over time.
Utilities
Remember electricity, water, internet, and other household bills.
Custom tasks
Create one-time or recurring reminders for personal obligations.
Important deadlines
Track upcoming, completed, and overdue tasks with clear states.
Built for reminders you should not miss.
ShiYu uses task states, scheduled reminders, and system notifications to make important tasks harder to ignore.
Task-first structure
Turn important dates into clear tasks instead of loose notes.
Reminder preferences
Choose when ShiYu should remind you before a due date.
Alarm-style notifications
Receive system reminders even when the app is not open.
Recurring schedules
Repeat monthly tasks automatically for bills and regular obligations.
Alarm-style reminders require notification permission and may be affected by system settings, battery restrictions, Focus modes, or platform permissions.
Core features for bills and recurring reminders.
ShiYu combines bill tracking, repayment reminders, bank presets, and task management into one focused mobile utility.
Credit Card Repayment Reminders
Create repayment reminders for credit card bills and keep important due dates visible.
Bill & Task Management
Create, search, filter, edit, complete, and delete bill tasks or recurring life reminders.
Bank Presets
Use built-in bank templates to quickly create repayment tasks with common billing and due date patterns.
SMS Paste Parsing
On iPhone, paste bill SMS messages into ShiYu for parsing instead of manually entering every detail.
Smart Local Notifications
Receive local reminders before due dates, with customizable reminder timing and stronger alerts for key repayment days.
Recurring Life Tasks
Manage monthly tasks such as rent, car loans, utilities, and other scheduled reminders without recreating them every month.
Built for iPhone and Android.
ShiYu keeps the same product purpose across platforms while respecting iOS and Android system differences.
iPhone
Android
Questions about ShiYu
Answers about platform behavior, reminders, bank presets, and task workflows.
Is ShiYu only for credit card bills?
No. ShiYu focuses on credit card repayment reminders, but it can also be used for recurring life tasks such as rent, car loans, utilities, and custom reminders.
Can ShiYu read SMS messages automatically on iPhone?
No. iOS does not allow apps to directly read SMS messages. The iPhone version supports copy-and-paste parsing instead.
Does ShiYu support Android reminders?
Yes. The Android version supports notification reminders for repayment dates and scheduled tasks.
Can monthly tasks repeat automatically?
Yes. The Android version supports monthly auto-cycling for recurring tasks, so users do not need to recreate them every month.
Does ShiYu support bank presets?
Yes. ShiYu includes bank preset information to help users quickly create credit card repayment reminders.
Is ShiYu available in English?
The iPhone version supports Chinese and English switching. Platform language support may continue to improve over time.
Stay ahead of bills and recurring tasks.
Use ShiYu to organize repayment dates, reminders, and everyday scheduled tasks in one focused mobile app.