Provide a variety of practical tools, including ruler, protractor, AR rangefinder, flashlight, thermometer and other daily functions.

【 Subscription 】
1. Users can unlock all functions only with a paid subscription.
2. The subscription fee will be deducted from the iTunes account when the user confirms the purchase. It can be used for a three-day free trial and can be automatically renewed for $29.99 /year.
3. Users can turn off automatic renewal 24 hours before the end of the current subscription, otherwise it will be automatically renewed.
4. The Apple ID of automatic renewal subscription will be automatically deducted from the iTunes account 24 hours before the expiration of each billing period and the corresponding validity period will be extended.
5. Users can manage the subscription service, that is, they can go to the user account to set and close the automatic subscription after purchase.
Terms of Use：
https://www.yuque.com/docs/share/be12ffad-0b25-4335-8263-2ba6a5070b1a
Privacy Policy：
https://www.yuque.com/docs/share/795e44c2-1baa-4787-ae40-ce9eca767844