Panda Calculator - Support
Last Updated: 2026-07-13
1. Contact
If you encounter any issues or have feature suggestions, please reach out to us via:
- Email: yokinzhu@gmail.com
- WeChat: Zhuyokin
- Developer Website: https://mrqk.com
We recommend contacting us via email and including a description of the issue, device model, iOS version, and relevant screenshots to help us resolve it faster.
2. Support Scope
Our current support covers:
- App not opening or crashing
- Mortgage, auto loan, housing fund, social insurance, salary, or income tax calculation errors
- Standard or scientific calculation errors
- Unit conversion errors
- RMB uppercase/lowercase conversion issues
- Kinship term lookup errors
- Bill splitting issues
- Theme colors or dark mode display issues
- Haptic feedback settings issues
3. Basic Information
- Product Name: Panda Calculator
- Platform: iPhone and iPad
- System Requirements: iOS 17.0 or later
- Price: Free download, no in-app purchases, no subscriptions
4. FAQ
Does the app contain ads?
Panda Calculator has no ads whatsoever, providing a clean experience.
What calculation features are supported?
It includes 12 major feature modules: mortgage, auto loan, housing fund, social insurance, salary, income tax, standard calculator, scientific calculator, unit conversion, RMB uppercase/lowercase conversion, kinship term lookup, and bill splitting.
Is any data uploaded?
All calculation data is stored only locally on your device. No data is uploaded to any server. The app works fully offline.
How are salary, social insurance, housing fund, and income tax modules connected?
These four modules share data with each other. You can enter your pre-tax salary in the salary module, and the system will automatically use social insurance, housing fund, and income tax parameters to estimate your net pay. You can also use any module independently.
What mortgage types are supported?
It supports commercial loans, housing fund loans, and combined loans, with equal installment and equal principal repayment methods, plus three input modes: total loan amount, total home price, and unit price × area.
5. Changelog
v1.0.6 (2026-07-13)
- Renamed to "Panda Calculator" with updated app icon and panda/bamboo branding assets
- Replaced "About" tab with "Settings", added haptic feedback, WeChat support, and more apps
- Mortgage now supports commercial, housing fund, and combined loans, three input modes, and manual LPR/basis points
- Auto loan now includes purchase tax, insurance, registration and other on-road costs
- Added housing fund, social insurance, salary, and cumulative withholding income tax modules with cross-module data sharing
- Redesigned home screen and financial module UI for small screens and dark mode
v1.0.4 (2026-04-04)
- Added mortgage and auto loan calculator entries on the home screen
- New mortgage calculator with equal installment, equal principal, down payment ratio, loan term, and repayment schedule
- New auto loan calculator with down payment, loan term, monthly payment, interest, and total cost
v1.0.3 (2026-03-31)
- Unit converter now has a fixed two-row category panel
- 5 new theme color schemes added
- RMB tool upgraded to bidirectional uppercase/lowercase conversion
v1.0.2 (2026-03-30)
- 5 new theme color schemes, character theme and butterfly animated background
v1.0.0 (2026-03-28)
- Launched 6 core features
- Optimized UI interaction and performance
- Ad-free clean mode