Volumi vs FixYourDeck

Volumi is a precise media volume utility built for iPhone. Go finer than Control Center—adjust in 1% steps with keyboard input on the free tier, or unlock 0.1% precision (1,000 steps) with Pro. Save volume presets as Scenes for commute, sleep, workouts, meetings, and more. Switch in one tap and stop adjusting volume every time you change context. CORE FEATURES • Volume Scenes — save multiple presets and apply them instantly; enter a scene session and exit by adjusting volume manually • Precise control — ring or slider UI plus keyboard input; Pro adds hold-to-accelerate fine-tuning • Auto Trigger — switch automatically when you connect headphones or arrive at a saved place (Pro, opt-in per scene) • Focus integration — apply a linked scene when a Focus mode activates (Pro) • Mute & restore — save your level before muting and restore with one tap • Home Screen widget — show scene and volume; tap to switch scenes and mute/restore; Pro adds ± volume buttons • iCloud sync — keep scenes consistent across devices (Pro, optional) PRIVACY Zero data collection. No ads. No third-party SDKs. Your data stays on device or in your private iCloud. PRO — ONE-TIME PURCHASE Unlimited scenes · 0.1% precision · auto trigger · 15 templates · no subscription

FixYourDeck turns your iPhone and a class-compliant USB audio interface into a complete measurement bench for cassette decks — the instruments a service workshop used to need a rack for. MEASURE • Frequency response 20 Hz – 20 kHz, both channels, with -3 dB bandwidth and chain-baseline subtraction • Wow & flutter to IEC 386 / DIN 45507 (weighted peak, weighted and unweighted RMS, wow/flutter split) with a flutter spectrum that names the worn rotating part • Speed error and long-term speed drift • Noise and signal-to-noise (flat, A-weighted, CCIR-468), MOL and SOL, dynamic range • Azimuth with live level, phase and inter-channel timing meters — set the azimuth of discrete heads with ease, using the special azimuth test tape or any well-recorded prerecorded tape • Diagnostics: modulation noise, crosstalk, erase efficiency, dropout counter ALIGN Guided assistants for bias (over-bias from the 10 kHz peak), record level / Dolby level, azimuth and playback alignment with a calibration tape — live meters you can turn a screwdriver against. TEST ANY DECK, EVEN A WALKMAN Record the self-describing Measurement Test Tape once on a good deck; each segment announces itself with a digital marker. Play it on any two-head deck or portable and the app grades frequency response, wow & flutter, speed drift and azimuth from playback alone — no monitoring head needed. DOCUMENT Every deck is a profile with its own calibration and saved sessions. Compare before and after service, and export one PDF — the Deck Measurement Protocol — with every value tabulated. TOOLS Oscilloscope (Y-T and Lissajous), tone generator, real-time 1/3-octave analyzer, level meters. WHAT YOU NEED A class-compliant USB audio interface with a stereo line input and output (e.g. a 2-in/2-out interface), cables to the deck's line in/out, and a blank tape. The speed check works with the built-in microphone alone. FREE AND PRO Speed and frequency measurement are free. FixYourDeck Pro — a one-time purchase, no subscription — unlocks all other measurements, the alignment assistants, diagnostics and protocol export. Made by cassette-deck restorers, in 16 languages. No account, no analytics, no data collection: everything stays on your device.