灵鹿扫描王 vs cFormula

灵鹿扫描王是一款能够扫描纸质文档的工具。它能够帮助您扫描合同，书本，学习资料进您的手机，将您的纸质资料数字化。 在扫描过程中，它支持自动剪裁文档边缘，自动对您的文档进行校正。 它可以和您的账户绑定，扫描记录可以多设备同步。 快来下载使用吧。 会员订阅 - 会员可以在"我的"页面登录后，可以点击开通。 - 订阅按季度收费，每季度12元人民币。 - 订阅自动按所选套餐价格续订，除非在当前订阅期提前 24 小时取消。订阅费在您确认购买时通过 iTunes 帐户收取。购买后，您可以前往帐户设置，管理订阅和关闭自动续订。在活动订阅期内不能取消当前订阅。购买后，将不会为任何未使用的部分退款。 - 使用条款：https://bridge.ziti3.com/intro/scan_protocol.html - 隐私政策：https://bridge.ziti3.com/intro/scan_privacy.html

Customize formulas and calculate at any time. I want to calculate using formulas, but most apps have built-in formulas. There are countless formulas in the world, and it is not easy to find the formula you need to use. Now you can create your own formula within 1 minute. Just 3 steps: 1. Take a photo or select a formula image in the album. 2. Add variables. 3. Enter an expression containing variables. The formula creation is completed, and the calculation is completed instantly by inputting the numerical value of the variable. 【 Main functions 】 ——Take pictures and crop them. ——Select an image and crop it. ——Set formula variables, support uppercase and lowercase letters in English and Latin, and support subscripts. ——A dedicated keyboard for expression input, simple and easy to use. ——Check the expression and prompt for incorrect positions. ——Number specific keyboard, clear and easy to use. ——Supports angle or radian calculation settings. ——Supports calculations such as arithmetic, exponent (power), root, trigonometric function, logarithm, etc. ——Support Scientific notation and factorial calculation. ——Supports constant inputs such as e and π. ——ICloud cloud synchronization creates formulas that are shared across multiple devices and can be used anytime. ——Support restoring after deletion. The deleted formula will be permanently deleted after 30 days. Tip: 1. The simplest formula is to have no images, no variables, and only expressions. You can use it to calculate mathematical formulas with fractions and multiple parentheses. Can be used all at once, next time clear the expression and input a new one. 2. The image of the formula is used to compare the input variable values during use. You can take photos of formulas on books, computer screens, or handwrite them. You can also use other software to edit screenshots of formulas. 3. The dedicated keyboard for expression input is for convenience and ease of use. You can also paste functions that the keyboard does not support in the expression input box, which may bring surprises.