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Mechanic

Built for the independent shop, not the dealer. The headline is the OBD-II Code Lookup — type a DTC like P0420 and get the meaning, likely causes, and severity tier you can quote a customer. Plus the rest of the running-a-shop stack: hourly labour math, percent and discount tools for parts markup, generate quotes / invoices / receipts, sign and merge the paperwork. Most parts of this run offline; nothing sensitive moves through someone else's servers.

18 tools · 6 sections

Diagnostics

1 tools

Decode DTCs, no internet search needed.

OBD-II Code Lookup

Type or paste a Diagnostic Trouble Code (DTC) — P0420, P0171, etc. — and get the description, system, likely causes, and severity. Covers the most-looked-up SAE generic codes.

Shop math

4 tools

Labour-rate × hours, parts markup, sales tax.

Percentage Calculator

Calculate percentages, increases, decreases, and changes.

Discount Calculator

Calculate sale prices and how much you save.

Calculate tips and split bills between people.

Salary Calculator

Convert between hourly, daily, weekly, monthly, and annual salary.

Customer documents

4 tools

Quotes, estimates, invoices, receipts.

Quote Generator

Create professional quotes for your clients. Drag to reorder line items, see a live summary, save as draft or convert straight to an invoice. Numbered, in-browser, all on your device.

Invoice Generator

Create professional invoices for your small business. Drag to reorder line items, see live totals, save as draft, mark as paid and issue a receipt in one click.

Receipt Generator

Quick receipts for cash, card, and bank-transfer payments. Drag-handle line items, live cash-change calculation for walk-ins, save customers for next time.

Statement Generator

Generate account statements from your invoice history. Pick a client, pick a date, get a clean summary with aging buckets — no manual entry.

PDF + paperwork

5 tools

Sign, merge, watermark, scan customer-facing PDFs.

Sign PDF documents online. Draw your signature and place it on any page.

Combine multiple PDF files into one document.

Add a text or image watermark to every page of a PDF.

Combine multiple images into a single PDF — drag to reorder.

Fill out PDF forms online. Type into fields, check boxes, select options.

Vehicle math

1 tools

Mileage log + fuel/MPG tracker for shop and customer rigs.

Mileage Log + Fuel Tracker

International mileage log — US (IRS, miles + gallons), Australia (ATO cents-per-km, km + litres), UK (HMRC AMAP banded, miles + litres), Canada (CRA banded, km + litres), or custom. Save repeat routes for one-tap logging. Per-year rate history auto-applies by trip date. YTD dashboard with monthly chart, CSV + printable PDF export, multi-vehicle, optional fuel + MPG / L/100km tracker. All on-device.

Schedule + reminders

3 tools

Customer appointment dates, oil-change reminders.

Recurring Session Planner

Generate dates for repeating appointments + a downloadable .ics calendar file.

Date Calculator

Calculate the difference between dates or add/subtract days.

Countdown Timer

Set a countdown timer with custom duration.

Looking for something specific? Browse all 240 tools.

Built browser-first. Run by one developer.

Every tool runs on your device. No tracking pixels, no sign-up to start. The numbers below are pulled live from the registry.

240

Free tools

Across 14 categories

7

Visual editors

PDF · image · video · audio

32

Curated kits

By profession + lifestyle

17

AI tools

Powered by Claude API

Files never uploadNo tracking pixelsNo sign-up neededWorks in any modern browser

The handful of AI tools (paraphrase, summarise, blog, captions, etc.) send your prompt text to Anthropic's Claude API to do the work. Files, images, PDFs and video never leave your device. Pick the tools that fit your privacy comfort.