Engine RPM vs Pitbox Moto

Measure the RPM of an engine by analyzing the sound it makes. Engine RPM listens to the sound of a running engine and uses advanced signal processing algorithms to extract the frequency of that sound and calculate the RPM. This app is primarily for setup and diagnostics of engines. After setting the the number of cylinders and whether the engine is a 2-stroke or 4-stroke engine, the app can work with any internal combustion engine, from diesel tractors to aircraft engines to motorcycles to chainsaws. To use the app you must set an expected RPM range to guide the analysis algorithms to the correct RPM. A real-time graph of the autocorrelation graph is displayed to help in troubleshooting and adjusting the expected RPM range. The analysis requires a clear sound from the engine without excessive interference from extraneous sounds. Do not expect to read the RPM of an engine while other things are making too much noise at the same time. The analysis also requires that the RPM be stable. It cannot read the RPM of an engine that is rapidly accelerating. For this reason, and because of the need for adjusting the expected RPM range, this app should not be considered a drop-in replacement for an operational tachometer. Setup options include update periods from 93 milliseconds to 1.5 seconds, one to 12 cylinders, 2-stroke or 4-stroke, low-pass filtering, and signal clipping. The overall RPM range is 400 to 90,000 RPM (although at any one time, the operational range is typically +/- 30% around a nominal expected RPM). Precision is usually about +/- 10 RPM.

Every bike you own, every mile it's done — remembered. Pitbox Moto keeps a complete, searchable service history for your whole garage: oil changes, tires, fuel, and shop visits, logged in seconds and yours forever. Private by design — no account, no cloud, no tracking. Everything lives on your iPhone or iPad and backs up to a single file you control. YOUR GARAGE • Add every bike you own — or have owned — with brand, model, year, hero photo, VIN, registration, insurance, and full ownership history. • Find your bike in a built-in catalog of 149 popular models — it auto-fills the specs (engine, tires, seat height, weight, tank) and detects the drivetrain: chain, belt, or shaft. • Every screen adapts to your bike's hero-photo color. Black bike, black accent. Red Ducati, red accent. • Track by miles, kilometers, or engine hours (for dirt and MX bikes). • Imperial or metric. US dollars plus 17 other currencies. Set once. SERVICE LOG • Log oil changes, brake jobs, valve checks, chain service, and 40+ pre-configured service types. • Scan an invoice: a dealer invoice (PDF or photo) fills the form itself — bike, date, mileage, cost, type, shop — and attaches as your receipt. 100% on-device. • Attach before / after / receipt photos, plus an anything-goes wildcard slot. • Mark a service DIY or shop, with shop name and cost. • Search every record by date, type, cost, or bike. Auto-deduplication catches doubles. TIRE TRACKER • Per-axle tire history with brand, model, mileage, and cost. • Predicted remaining life from YOUR riding history — with brand benchmarks (Michelin, Continental, Metzeler, Pirelli, Heidenau, and more) as fallback. • Swipe to retire a set when it comes off; track shop vs. DIY install costs. FUEL TRACKER • Log every fill-up in seconds at the pump. Glove-friendly buttons. • Live camera scan: aim at the odometer or pump display to read the digits automatically. • Trend chart for MPG / L·100km over time; estimated-range tile on the hero card. • Fuel grades for every market — Regular to Premium, RON 95/98, E10, even Premix for 2-strokes. MAINTENANCE PLAN • "Stack your next maintenance" — see what's due so you can knock out three services in one shop visit. • Predictive intervals from your manufacturer's manual AND your actual riding pace — by miles, engine-hours, or months. • Import intervals straight from a manual PDF via on-device OCR — no typing. • Registration & insurance renewal tracking, plus local reminders so nothing sneaks up on you. OWNERSHIP INTELLIGENCE • Cost-per-mile across the lifetime of every bike. • Essential or Full dashboard — a calm overview or the whole picture, one switch. • Count maintenance only, or include modifications — every number updates honestly either way. • Recurring-pattern detection (e.g. "oil change costs up 18% this year"). • Bike Story view: every milestone, every chapter, in one timeline. PDF EXPORT — RESALE-READY RECORDS • Generate a polished, resale-ready service-history PDF for one bike — or your whole garage in one combined report. • Two report types: full service / maintenance / modification history, or a fuel log with an economy graph and running cost. • Choose which bikes to include, and toggle costs, notes, photos & receipts, and torque specs independently. • Buyer's-copy mode: flip costs off to hand a clean, professional record to a prospective buyer. • Share anywhere — Files, email, AirDrop, Messages, or print. 100% on-device. LOCAL-FIRST. PRIVATE. YOURS. • Built with Apple's SwiftData. No third-party servers, no tracking SDKs. • Export to a single backup file; import on any device. Built by a rider, for everyone who looks after their own bike or garage of bikes — every receipt, every service, every mile — whether it is DIY or done at the dealership. Track it like it matters, because it does.