calculator DUO vs DevCheck

A scientific calculator with history, memory and a keypad made for one hand. Save useful answers and tap to use them again on iPhone and iPad. WITHIN THUMB REACH Move and resize the left- or right-hand keypad to suit your grip. KEEP THE ANSWERS YOU NEED Save useful results on a visual shelf. Tap to reuse them, recall your last answer, or search your calculation history and mark favorites. CORRECT INPUT WITH CONFIDENCE Swipe to delete a digit or function. The deleted content stays visible until your next input; tap the return button to undo the deletion. FROM EVERYDAY TO SCIENTIFIC Use arithmetic, percentages, powers, roots, logarithms and trigonometric functions. Long-press a result for a large display, with adjustable text, color, font and size. MAKE IT YOURS Five themes, optional digit grouping and an interface in 50 languages. No account is required. Expressions, saved results and calculation history are stored on your device. DATES AND TIME, TOO Find the time between two dates, add or subtract days and hours, and calculate across time zones. The free app may show banner ads. Remove Ads is an optional one-time purchase, with purchase restoration through the same Apple Account.

How fast is your iPhone or iPad? How healthy is it? DevCheck puts benchmarks, detailed hardware information, battery monitoring and hardware diagnostics in one powerful, easy-to-use app. BENCHMARKS • Run full CPU, memory, storage and GPU benchmarks • Compare your scores with hundreds of device models in the DevCheck rankings • Track performance over time, run after run DASHBOARD • Live CPU load across every core, grouped by performance and efficiency • Battery, thermal state, memory pressure, storage and network activity at a glance DEVICE HEALTH • Check battery, storage, memory pressure, thermal state and hardware functionality • Test the display, HDR, multitouch, buttons, speakers, earpiece, microphone, headset, charging, flashlight, vibration, proximity sensor, accelerometer and Face ID or Touch ID • Ideal for checking a new or used device • Keep a journal of iOS and app updates, with space for your own notes DEVICE DETAILS • Chip, CPU clusters, GPU and Metal, and Neural Engine • Display, cameras and lenses, audio and sensors, with live graphs • Memory, storage and network details, including Wi-Fi, IP addresses and Bluetooth DEVCHECK PRO • Battery and device history: 30 days of battery level, charging sessions, battery use, thermal state, memory and storage • Widgets: Home Screen and Lock Screen widgets • System Monitor: live system graphs • Battery health: cycle count and maximum capacity from an imported Analytics log • Benchmark Labs: single tests and a timeline of each run • Network tools: Network Mapper and Bluetooth Scanner • Device reports: export a full device report as text, JSON or PDF • Personalization: accent colors DevCheck Pro is available as a monthly or yearly subscription, or as a one-time lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current billing period. To manage or cancel a subscription, open Settings, tap your name, then tap Subscriptions. PRIVACY No ads. No tracking. No account. Your data stays on your device. Benchmark results are uploaded only when you choose to submit them. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://devcheck.app/ios/privacy