About this app
What WrenchLog does
WrenchLog is a maintenance logbook built for people who do their own work. Add every vehicle in your driveway — the daily, the truck, the project car — and give each one a real service history: what you did, at what mileage, with which parts. Brand, part number, quantity, price, even the torque spec you always have to look up. Next oil change, you open the last job and your whole shopping list is right there. The intervals engine is the part a glovebox notebook can't do. Define each service — oil, brake fluid, tire rotation, coolant, plugs, diff fluid, whatever your platform needs — with a miles interval, a months interval, or both. WrenchLog counts forward from your last logged job and your current odometer, so the home screen always shows exactly what's coming due next across the whole garage, and a reminder fires before you're overdue instead of after. It also keeps the money honest. Every job rolls up into per-vehicle cost totals and cost per mile, and if you note what a shop quoted, WrenchLog tallies what wrenching at home has actually saved you. When you sell a car, export-ready history of documented owner maintenance is worth real dollars. No account, no sync, no subscription, no ads. WrenchLog is 100% offline — everything is stored locally on your device with SwiftData and never leaves your phone. • Per-vehicle service history with odometer at every job • Parts lines: brand, part number, quantity, price • Intervals by miles or months — whichever comes first • Next-due board and reminders across all vehicles • Cost totals, cost per mile and DIY-savings tally • Fully offline, no account, free If your service records live in a spreadsheet, a notes app and a greasy notebook in the glovebox, download WrenchLog and give them a garage of their own.
Features
Built to be useful, not noisy.
Garage & next-due board
Home screen lists every vehicle as a card with nickname, odometer and its soonest-due service; a unified next-due list across the whole garage sorts by urgency (overdue, due soon, OK).
Interval engine
Per-vehicle service intervals (oil, brakes, tires, coolant, custom) defined by miles, months or both; next-due is computed from the last matching job plus the current odometer, and local notifications fire as a service approaches due.
Job log with parts
Log each job with date, odometer, notes (torque specs, gotchas) and itemized parts lines — brand, part number, quantity, price — so the full history reads like a shop invoice you wrote yourself.
Costs & savings
Per-vehicle and garage-wide rollups: total spent on parts, cost per mile, spend by category, and a DIY-savings tally comparing logged parts cost against optional shop-quote amounts.
Why it exists
The problem
People who wrench at home have no good record system: shop-oriented apps like CARFAX Car Care auto-import wrong records they can't edit and nag with inaccurate reminders, fuel apps treat maintenance as an afterthought with broken notifications, and spreadsheets capture part numbers but can't compute what's due next fr…
What's different
How WrenchLog stands out
Unlike Fuelbook (fuel economy and fill-up costs only — no service records), WrenchLog never touches MPG: it is a service-history and intervals tool. Unlike Garagebook (a passive binder for a car's documents and records), WrenchLog is an active wrenching workflow — a dual miles/months interval engine that computes next…
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FAQ
Questions about WrenchLog
How much does WrenchLog cost?▾
WrenchLog is free. All features are included from day one — no subscription, no in-app purchases, no paid tiers. Everything you see in this listing works the moment you install it.
Where does WrenchLog store my data?▾
On your device. WrenchLog is built privacy-first: no account is required, no analytics SDKs, no third-party trackers. Nothing is uploaded to a server we control — the app works without one.
What platforms does WrenchLog support?▾
iOS, on iPhone and iPad. You can find the latest availability on this page.
How do I get support for WrenchLog?▾
Use the Support link on this page, or email support@allthingsn.com. We answer every message and keep responses on the same thread.
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