Chart standing · US
What changed · US
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Price & rating history · US
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Price · USD
About
THE ISOTOPE — THE ANALOG SOUL OF PERFECT PITCH Somewhere between a mad scientist's lab bench and a 1960s broadcast console lives The Isotope: a guitar tuner with a real needle, glowing readouts, and the tools a working guitarist actually uses — all in one piece of gear. TUNE BY NEEDLE Real-time pitch detection drives a vintage VU-style needle and a Nixie-tube note readout. Watch the cents settle, feel a single confirming buzz when you lock in, and move to the next string. Smart Auto-Detect lights up the closest string in your active tuning as you play. EVERY TUNING YOU'LL EVER NEED Standard, Drop D, DADGAD, Open G, Half-Step Down — plus a full custom tuning builder. Any note, octaves 0–7, saved to your preset list and one tap away. ASK THE LEAD TECH Your on-call AI guitar tech. String gauges for drop tunings, action and intonation, pedal chains, theory questions — every answer is grounded in a live web search and lists its sources, so you can check the receipts. Export any conversation as a text file. KEEP TIME A built-in metronome with click, haptic pulse, and a jewel-lamp beat indicator — runs independently, so you can tune while it ticks. GEAR VAULT Log your guitars, amps, and pedals — make, serial, value, notes. The string-change tracker tells you at a glance whether your strings are fresh, broken-in, or overdue. Everything exports as text for insurance or sale listings. ANALYTICS RADAR Live accuracy, lock-in counts, and per-string drift history — stored locally on your device, never in the cloud. ON YOUR WRIST The Apple Watch companion mirrors the phone tuner in real time — and when your iPhone is out of range, the watch switches to SOLO mode and tunes with its own microphone, honoring your active preset. Add the complication to your watch face to see your last note at a glance. RSS DISPATCH A curated guitar-news terminal built into the chassis, with six category filters and support for your own feeds. BUILT FOR iPHONE AND iPAD The same self-contained console on both — scaled up on iPad into a crisp centerpiece of gear. YOUR DATA STAYS YOURS Tuning history, gear inventory, and analytics live on your device. No accounts, no tracking, no cloud. Clip on, arm the tuner, and watch the needle swing. Welcome to the lab.
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