Calculator HD Pro vs CertFID

A colorful calculator with big buttons, comprehensive features, and extensive customization. Used by millions. Completely ad-free. SEE EVERY STEP ・Dual-line display - shows your input and result simultaneously ・Multi-line input for long equations ・Tap & hold to move the cursor or copy and paste where you want SAVE YOUR WORK ・History saves every calculation with time and date ・Label important calculations for easy reference ・Email single calculations or complete history ・Swipe down to review previous work CUSTOMIZE EVERYTHING ・6 layouts including extra-large button options ・10 color themes plus Dark Mode ・Adjustable font size and bold text ・Left-handed mode ・Show or hide features you don't need SCIENTIFIC FUNCTIONS ・Full scientific calculator when needed ・Memory buttons with values displayed ・Percentage and backspace buttons ・Automatic scientific notation ・VoiceOver accessibility OPTIONAL IN APP PURCHASES ・Today View Widget (iOS 17 and below) ・Multiple History Tapes ADDITIONAL FEATURES ・Customizable button symbols and decimal settings ・Multiple backspace button styles ・iPad Split View and 3D Touch support ・Gesture controls for quick access URL Scheme: calculatorhdpro://

CertFID — Tap. Certify. Done. CertFID is the field app for equipment inspection and certification, built for cranes, rigging, and lifting gear. Tap the NFC tag on any asset and its full record opens instantly — identity, certificates, inspection history, and next due date. - Tap. Certify. Done. — hold your phone to the tag on a sling, shackle, or crane and the asset opens. No searching, no typing. - Never lose your certs — all your critical safety compliance data, in CertFID, just a tap away. View the certificate, share as PDF, see pass/next-due at a glance. - Safe today isn't safe tomorrow — that's why pre-use checks run before every use. CertFID makes them quick, guided, and on record, with pass/fail per item. - Just ask. Fiddle answers — the AI assistant that has the answers to your equipment questions, drawn from your own certificates and checklists. - Less talking, more action — Fiddle Pro pulls cert stacks and drafts the email; nothing sends until you say so. (Business & up) - Every asset, on call. Fiddle Live — speak to your asset; Fiddle Live answers out loud, in real time. (Business & up) - Tag your whole yard in an afternoon — register the asset and write its tag in one motion, one at a time or a whole batch. - No signal, no problem — inspect, check, and tag with zero bars; it syncs automatically when your connection restores. (Professional & up) - Real, or a very good fake? — integrity used to be a promise. Maple makes it verifiable proof — every event hash-chained into a tamper-evident ledger.