iPhone Companion App Built By The Same One Guy

Your Garage.
In Your Pocket.

Everything a Redline Records logbook tracks on paper, now live in an app: service history, mods, fuel, dyno and track logs, a full JDM reference library, an OBD scan tool, and a Mechanic Mode for anyone doing the work for someone else. Built for the same cars, by the same person.
iPhone Only
Available Now

Download on the App Store

iPhone only, requires iOS 17 or later.

$24.95One-off purchase
Unlimited free updatesNo subscriptionsNo adsYours to keep, forever
A Look Inside

See It In Action

The Garage screen, showing a list of owned vehicles
The Garage
A single vehicle's screen, showing servicing, expenses, modifications and more
Vehicle Overview
The Reference library, showing a list of Lancer Evolution generations
Reference Library
The Search screen with suggested searches like oil filter and coolant
Search
Track and Telemetry screen, showing lap timer and 0-100 timer options
Track & Telemetry
OBD scan tool screen, showing live engine data such as RPM and boost
OBD Scan Tool
Mechanic Mode screen, showing a customer's job list
Mechanic Mode
A generated service report ready to email to a customer
Service Report
What It Does

It's Not Just a Logbook

01

iOS Only? Not for long - we need Android Testers!

Please contact Dylan for a free Beta Key on the contact page, the app has been ported to Android but we need testers!

02

The Garage

Every car you own, in one place. Service history, modifications, expenses, fuel log, dyno runs, track days and build photos, all logged against the right vehicle.

03

Reference Library

The same research behind every Redline Records logbook, built into the app. Factory specs, fluid capacities, torque figures, OEM part numbers and known faults, for hundreds of JDM models.

04

Search

Type what you need and find it. "Oil filter", "front axle nut torque", whatever it is, search this car, your whole garage, or every model in the library.

05

Track & Telemetry

A GPS lap timer, a 0-100 and quarter mile timer, and a spirited drive recorder that starts itself once you're moving. Every run saved straight to that car's history.

06

OBD Scan Tool

Pair a cheap ELM327 Bluetooth adapter and watch live data as you drive: RPM, boost, coolant temp, fuel trims and more, no laptop required.

07

Mechanic Mode

Doing the work yourself or for someone else? Flip into Mechanic Mode to log a customer's job, tick off what was done, and send a proper service report straight to their inbox.

08

Experimental features

Butt Dyno lets you estimate your ATW kW using GPS speed and acceleration data, factory vehicle weight, driver weight, and estimated drivetrain/transmission losses. Ride Signature tracks ride harshness over time. Engine Sound Check creates an engine noise baseline to help identify potential issues like lifter tick, boost leaks or bottom-end noise (highly experimental). Electrical Drain & Alternator Check uses OBD voltage monitoring and guided tests to check charging performance and electrical drain. There are so many new features being added daily, such as Convoy mode, electrical testing, speaker tuning, bog detecting - jump on in and take a look!

09

Calculators

Calculate / convert power figures, boost and AFR values, tyre size, ride height, offset, gearing, fuel blends etc.

Still Get the Book

The app is for the day to day. The logbook is the permanent record that stays in the glovebox and travels with the car through every future owner. Most people running a modified JDM end up wanting both: one for quick logging on your phone, one as the physical history that outlives any app.

Shop The Logbook Collection →
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App Questions

Before You Ask

A few things worth knowing about the app specifically. General logbook questions are on the main FAQ page.

See Logbook FAQs

Not right now. The app is iPhone only at launch, built for iOS 17 and later. An Android version isn't ruled out down the track, but there's no timeline for one yet.

No. The app works on its own, for any car in your garage. The physical logbooks are a separate product that some owners like to run alongside it for a permanent, offline record.

Yes, a standard ELM327 Bluetooth adapter, the cheap kind widely available online. Plug it into your car's OBD2 port and pair it in the app. Coverage depends on your car's ECU: some older or Mitsubishi Evo-era ECUs need a dedicated manufacturer scanner for full live data.

$24.95, as a one-off purchase. No subscriptions, no ads, and every future update is free. Buy it once and it's yours to keep, forever, same as the logbook. Final pricing will be confirmed closer to launch, so join the mailing list above to hear first if anything changes.