Platterset

Platterset is the complete turntable setup bench in your pocket. One $0.99 purchase replaces a speed app, a protractor, and a stack of calculator websites — and it works entirely offline, with no account, no ads, no subscription, and no permissions.

PRINTABLE ARC PROTRACTOR
Print a dimensionally-exact arc protractor tailored to your measured pivot-to-spindle distance, chosen geometry (Baerwald / Löfgren B / Stevenson) and groove standard (IEC / DIN / 7-inch). Dual 50 mm and 190 mm calibration bars let you confirm your printer didn't rescale before you align a single cartridge.

PLATTER SPEED STABILITY
Lay your phone face-up on the platter and read live RPM, percent deviation, and speed stability, with a live speed-vs-time graph and a wow plot around the spindle. It measures platter rotation stability on-device — no strobe disc, no extra hardware.

ALIGN
Pivoted-arm geometry for Baerwald (Löfgren A), Löfgren B and Stevenson: overhang, offset angle, effective length, both null radii, a null diagram and a tracking-error curve — now with a multi-geometry overlay so you can compare all three at once.

RESONANCE
Cartridge/tonearm resonance with the 8–11 Hz ideal gauge and automatic compliance conversion.

SPEED, ANTI-SKATE & MORE
Strobe reference and a tap-timer with stray-tap rejection and a lock indicator; anti-skate guidance with clear skating-force vs. dial-setting labels; a phono-load helper.

LIBRARY & LEARN
80+ cartridges and 40+ tonearms you can load into the calculators, plus setup guides, annotated diagrams and a glossary. Save your gear and track stylus hours, then export a polished PDF setup report.

PRIVATE BY DESIGN
Everything stays on your device. A one-time purchase — no subscription.

Platterset is a setup aid, not a laboratory instrument; printed protractor accuracy depends on your printer, and the speed tool reports relative stability. Always verify with the on-screen calibration bars.