GarageNest: Every Car You Own, One Schedule

Car records tend to live in three places at once: a glovebox stuffed with receipts, a note on the phone with the last oil change mileage, and a vague memory of when the insurance renews. Each part works until you need the whole picture — at trade-in time, when a repair bill arrives, or the week two renewals land together. GarageNest holds the lot in one file: what has been done, what is due, what it cost, and when the paperwork expires.

Service reminders that count miles and months at the same time

Seventeen maintenance jobs come preloaded with realistic intervals — oil at 7,500 miles, tire rotation at 6,000, brake fluid at 30,000 — and each one counts down in miles and in months simultaneously, showing whichever runs out first. That distinction matters more than it sounds: a car that barely gets driven still needs its brake fluid changed, and a mileage-only reminder will never say so. Log one past service and the countdown restarts from your real number rather than a round one.

Fuel economy worked out from what you actually paid

Log a fill-up with the odometer reading and MPG is calculated between full tanks, so a partial fill never quietly skews the average. Best tank, worst tank, average price per gallon and cost per 100 miles all come from the same log. The number is yours rather than the sticker’s, and a slow decline across several tanks is usually the first sign of something worth checking.

What the car actually costs, in one ledger

Parts, repairs, insurance, registration, tires and washes go into a single running total, with fuel and service costs folding in automatically. A twelve-month chart shows where the money went by category, and the lifetime figure can include the purchase price — which is the version most owners have never actually looked at.

Renewals that stop being a surprise

Inspection, emissions, insurance and registration each get their own countdown, turning amber at 45 and 30 days out and red once a date has passed. It is a small feature that quietly removes an entire category of annoyance.

Miles or kilometers, without rewriting your data

The whole app runs in miles, gallons and MPG by default, and one switch converts everything to kilometers, liters and L/100 km. Values are stored once and converted only for display, so flipping the setting never alters what you saved.

Tires, parts and the shops worth calling again

Tread depth is tracked in 32nds with age warnings, parts carry their numbers and warranty end dates, and mechanics you trust get a place to live other than your call history.

One file, no account, nothing uploaded

GarageNest is a single HTML file with three color themes. It opens from a USB stick, works with the Wi-Fi off, and adds to a phone home screen like an app. Every screen exports its own table as a print-ready page, a standalone HTML file or CSV — genuinely useful at resale, where a documented service history is worth real money. There is no account, no subscription and no server: your mileage, your costs and your addresses stay on your device, and a JSON backup is one tap away.

Load the sample garage to see it full of data first, then buy GarageNest for $4.99 (50% off for a limited time).