Calculator- Calculation Pro

It provides calculator, QR code scanning, OCR scanning and other functions.

it provides calculator function, viewable history.
It provides QR code scanning, QR code generation function.
It also has OCR text recognition function with high text recognition rate.

Subscription.
1. users can unlock all functions only after they have passed a paid subscription, including unlimited access to scientific calculator, QR code scanning, OCR scanning and other functions.
2. The subscription fee will be deducted from the user's iTunes account upon confirmation of purchase, with a three-day free trial and automatic renewal at $29.99/year.
3. users can turn off auto-renewal 24 hours before the end of the current subscription, otherwise the subscription will be automatically renewed.
4. automatic renewal of the Apple ID of the subscription will be automatically deducted from the iTunes account 24 hours before the expiration of each billing cycle and extend the corresponding validity period.
5. Users manage the subscription service, i.e., they can go to their user accounts to set off automatic subscriptions after purchase.

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