For real mechanics — not the stealership

Your car's story,
finally told right.

Track every bolt, fluid, and mile yourself.
Your garage. Your rules. Your log.

Start Your Log — Free Download on the App Store
Rolling Odometer
000,000
Dealer Markup
0%
DIY Annual Savings
$0
System
LIVE
The Problem

Only shops control your service history.
We help you get control back.

Welding gloves on a muffler — real home mechanic work
Real work. Real savings. Real records.
Dealership Invoice

You drop it off at 8am. They call at 2pm with a list of "urgent" repairs. Shop fees, "diagnostic time," and parts you never authorized. The paper is their weapon.

Service Invoice #40817 OVERDUE
Oil Change — Synthetic 5W-30$189.00
Cabin Air Filter (Part #A4813)$94.00
Tire Rotation & Balance$79.00
Brake Flush — "Highly Recommended"$149.00
Diagnostic Fee (1 hr. labor)$165.00
Environmental / Shop Fee$47.00
Total Due $723.00
Your Knuckle Log

You logged the oil change 3 weeks ago. Cabin filter was swapped 6 months back — receipt and part number in the app. They don't get to bill you twice. Knowledge is the tool they don't want you to have.

Your Service Log UP TO DATE
Mobil 1 5W-30 5qt + K&N Filter$38.47
Cabin Filter — Fram CA10755$14.99
Tire Rotation (floor jack, 20 min)$0.00
Brake Flush — Valvoline DOT 4$11.99
Diagnostic Fee$0.00
You Paid $65.45
You Saved $657.55

When you know what was done, when it was done, and what it cost — nobody can take advantage of you. No guessing. No getting played. Just facts. That's what Knuckle Log is for.

Feature Set

The full engine bay.

Every tool a serious home mechanic needs — in one dead-simple log.

Restored wood-rim wheel and gauges
Module — 01

Service History Log

Every oil change, filter, belt, and fluid — timestamped to the mile. A complete, unimpeachable record of what was done, when, and what it cost. No paper receipts. No memory required.

Stainless muffler and parts on the bench
Module — 02

Parts & Fluids Tracker

Log part numbers, brands, suppliers, and prices. Know exactly what's in every corner of your vehicle — oil weight, coolant type, brake spec — right down to the torque value you set on those lugs.

Two cars in the Colorado foothills
Module — 03

Mileage & Reminders

Set interval reminders by miles or time — never miss an oil change, tire rotation, or timing belt window. The app tracks your odometer and alerts before you hit the limit, not after.

Handing over the keys
Module — 04

Cost Intelligence

Track what you've spent — parts, tools, supplies — and see your real total cost of ownership. Compare your actual DIY spend to the dealership equivalent. The savings column gets satisfying fast.

Live Telemetry View

Your car's data.
On your terms.

A dashboard that reads like a cockpit. Real maintenance data, real cost intelligence — no fluff, no upsells. Just signal.

Multi-vehicle — every car, truck, bike, and project rig
Photo receipts & part documentation, right in-app
Offline-first — works in the garage with zero bars
Buyer report PDF export for warranty claims & resale proof
Launch the App Download on the App Store
Knuckle Log — Dashboard LIVE
2019 Ford F-150
5.0L V8 · VIN ···· ···· 3841
CALIBRATED
Engine Oil CHANGE DUE
Current Mi.
93,847
Last Changed
88,312
Interval
5,000 mi
Life remaining — 5W-30 Synthetic
Tires & Brakes NOMINAL
Last Rotation
90,100
Next Due
95,100
Pad Life
68%
Recent Service Log
Oil Change — Mobil 1 5W-30 · K&N HP-1017
88,312
Tire Rotation — Cross, 103 ft-lb
90,100
Brake Fluid Flush — Valvoline DOT 4
89,500
Air Filter — Fram CA10755
85,000
0%
Average dealer parts markup vs. retail
$0
Average annual savings vs. dealership
0%
Of users feel more confident at the service counter
0 ads. ever.
We don't sell your data. We don't run ads. Full stop.
“

Walked into the dealer for a recall and they handed me a $600 list of "recommended services." I pulled out my phone, showed them my Knuckle Log — every single one of those items had been done in the last 8 months, with receipts and part numbers. They backed off instantly. The look on that service advisor's face was worth every penny.

JM
Jake M.
2006 Silverado · 8 Vehicles Logged
Take Back Your Garage

Your car.
Your record.
Your call.

Stop handing mechanics a blank check. Start your log today — free forever for one vehicle, no credit card required. Because your garage runs on knowledge, not guesswork.

Start Your Free Log Download on the App Store
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