Switch number markers
Tap “123” beside the result, or open Settings, to choose Chinese, English or Thai markers. These identify place values such as thousands and millions. They do not convert currencies or measurement units.
Language, haptics and motion
On first launch, the app uses a supported preferred device language. Settings lets you change the app language, marker language, appearance, haptics and reduced motion. The app also respects the system Reduce Motion setting.
History and data
Calculations run on your device without an account or AI service. Open History to revisit, share or delete records. Copying and sharing happen only when you choose them.
Purchases and refunds
The current product is a paid download, not a subscription. See your local App Store for pricing. Use the Apple Account that purchased the app to download it again. Apple handles billing and refund requests.
Contact support
Email Sheng Hao (盛浩) at shenghao.pm@gmail.com. Include your device model, iOS version, app version and steps to reproduce the issue. Do not send passwords, payment credentials or sensitive calculations.