GenieCalc vs QuietPlayer

GenieCalc puts six everyday tools into one clean, dark-themed app. No account, no subscription — just open it and calculate. Scientific calculator Trigonometric, hyperbolic and inverse functions, logarithms, powers and roots, factorials, permutations and combinations, GCD and LCM. A running history lets you tap any earlier line to reuse it, and a D-pad moves the cursor inside long expressions. Function grapher Plot any expression in x over a range you choose and read the curve directly. Currency converter Live rates for 16 major currencies, plus any currency you add yourself. Added currencies survive a refresh. Humidity tools Convert between relative and absolute humidity, find the dew point, and compute saturation vapour pressure in hPa, kPa and mmHg — using the Magnus approximation. Market indices Track S&P 500, NASDAQ, Dow Jones, KOSPI, Nikkei, futures, gold, oil and crypto, with sparkline charts and a detail view. Unit converter Over 120 units across 11 categories: length, area, mass, volume, time, temperature, current, energy, power, radiation dose and radioactivity. You can define your own units too. 26 languages The interface follows your device language, or you can pin a language in Settings. Numbers are formatted for your region. GenieCalc is free and supported by ads. You can review your ad personalisation choices at any time from Settings.

QuietPlayer Loop & review any video, offline. Practice a routine. Study your form. Rehearse a scene. QuietPlayer lets you loop any section of a video, frame-accurately, so you can replay exactly the moment you need — again and again, without editing anything. Built for repetition: Set an A-B loop on any clip and it plays that section on repeat. Use Quick Durations (5s, 10s, 15s, 30s, 1 min) to jump straight to the loop length you want, or set custom in/out points by hand. Save the best part: Trim a highlight into its own clip without touching the original file — perfect for tracking progress over time or pulling out just the moment you want to keep. Everything, organized: Import photos, videos, audio, and GIFs from Photos or Files and organize them into collections and playlists. Build a queue and move through your material in exactly the order you want. Private by design: No subscriptions. No required cloud storage. Your media stays on your device — QuietPlayer doesn't upload anything anywhere. Whether you're training, practicing an instrument, studying game film, rehearsing, or organizing your personal media library, QuietPlayer gives you precise playback control with nothing leaving your phone.