Platterset

Platterset is an offline turntable setup workbench for cartridge alignment, arm/cartridge resonance matching, platter-speed checks, anti-skate estimates, phono loading, service notes, and shareable setup reports.

Whether you are dialing in a starter deck or maintaining a serious listening room, Platterset keeps the core setup tools in one clean app. No account, no ads, no subscription, and no network connection required.

ALIGN YOUR CARTRIDGE
- Enter pivot-to-spindle distance and choose Baerwald, Lofgren B, or Stevenson geometry.
- See overhang, offset angle, effective length, null radii, a null-point diagram, and a tracking-error curve.
- Print a true 1:1 arc protractor PDF with calibration bars.
- Use IEC, DIN, 7-inch, Technics, Rega, SME, or built-in tonearm library presets.

MATCH ARM AND CARTRIDGE
- Calculate low-frequency resonance from effective mass, cartridge weight, and compliance.
- Convert 100 Hz compliance to a 10 Hz estimate.
- Get headshell-mass guidance when the pairing sits outside the ideal 8-11 Hz range.
- Check MM/MI capacitance and MC resistance loading.

CHECK SPEED AND SETUP HEALTH
- Tap revolutions to measure RPM error for 33 1/3, 45, 16 2/3, and 78 rpm.
- Use optional gyro speed-stability mode while the phone rests on the platter.
- Review strobe-disc references for 50 Hz and 60 Hz mains.
- Estimate anti-skate starting range from tracking force, stylus profile, and alignment geometry.

NEW IN 2.1: PRO SETUP AUDIT
The Report tab turns your bench readings into a stage-by-stage audit with readiness score, service grade, blockers, fix-first queue, next bench actions, setup prescription, and shareable PDF report. A custom six-tab interface keeps Align, Resonance, Speed, Report, Library, and Learn visible on iPhone and iPad.

REFERENCE AND RECORD KEEPING
- 80+ cartridge references and 40+ tonearm/integrated-arm references.
- Save turntable and cartridge setups with notes and stylus play hours.
- Built-in setup guides, diagrams, and glossary for common vinyl setup terms.

Platterset is private by design. It collects no data, tracks nothing, and keeps your setup notes on your device. Calculations are setup aids; always follow your equipment manufacturers' instructions and verify measurements on your own gear.