No — and we don't pretend to be. Expected accuracy is ±5–10 % on peak power vs a calibrated chassis dyno. The cross-validation between our two channels tells you when to trust the number.

Any OBD-II car (2001+ in EU) with the supported PIDs. Even cars without a MAF sensor work via our speed-density synthesis fallback (most modern VAG TSI/TFSI engines).

It pairs the bundle to your account so cloud sync, history and reports work across devices. No subscription if you buy the Pro tier — it's a one-time license.

Yes for testing, but the bundle hardware (OBDLink MX+) is what we calibrate against and what we support officially.

Your runs are stored locally on the phone first, then synced to our Supabase backend (EU region). You can export and delete at any time from the customer portal.

We synthesise it via speed-density: ṁ_air = (MAP × displacement × RPM × VE) / (R · T · 2). Works on most VAG, BMW, Ford EcoBoost engines. Just enter your engine displacement once in the vehicle profile.

A 22 km/h crosswind contributes ~8 hp difference between opposite-direction runs. Mitigation: drive perpendicular to the wind, or do two runs in opposite directions and average them.

Yes. We treat AWD with an 18 % drivetrain loss factor (vs 15 % RWD, 13 % FWD). Pick your drivetrain in the vehicle profile.

Yes. Every run can be exported as a one-page PDF (modelled after pro dyno reports). The customer portal also has a 'public share link' option that generates a read-only URL.

Starter is a 12-month license, up to 3 vehicle profiles. Pro is a lifetime license, unlimited vehicles, and the multi-run comparison overlay tool. Both include cloud sync and PDF export.

No. Both tiers are one-time purchases. The Starter license expires after 12 months and you can renew if you want to keep cloud sync.

Not yet. Android only at launch. iOS is on the roadmap but Apple's restrictions on Bluetooth Classic make it harder.