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Mobile appsEasy1 to 2 weekendsUnder $100Mobile app

Oil Log

Log car maintenance and fuel, and get reminded when the next service is due.

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The idea

Drivers forget when they last changed oil or rotated tires, and receipts get lost. Oil Log tracks services with mileage, photos of receipts, and reminders by date or miles. It organizes your own records and is not mechanical advice.

Who it is for
Car owners who keep older cars running
How it makes money
Subscription for multiple vehicles
Suggested stack
Expo (React Native), Supabase for login and data
Launch cost
Under $100

Your first AI prompts

Paste these into Claude, Cursor or Lovable, in order. Check that each one works before moving on.

PROMPT 1 OF 3

Build an Expo app called Oil Log. Start with login and a Vehicles screen with year, make, model, nickname and current mileage, and a vehicle detail page.

PROMPT 2 OF 3

Add a Service Entry form with date, mileage, type (oil, tires, brakes, battery, other), cost, shop name, notes and receipt photo. Let the user set intervals per service type in miles and months, and compute next due. Schedule local notifications and ask for a mileage update monthly.

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PROMPT 3 OF 3

Add a cost summary per year, PDF export of the full history for selling the car, and a subscription for more than one vehicle.

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The 10 step playbook

  1. 01Claim your ideaPut your name on it and unlock every prompt and the full playbook. Always free.
  2. 02Domain and nameBrainstorm a short name, check the .com, and register it.
  3. 03Trademark basicsSearch for conflicts before you fall in love with the name.
  4. 04AI build kickoffPaste the prompts below into Claude, Cursor or Lovable, one at a time.
  5. 05Server and hostingPick a host and have your AI walk you through setup.
  6. 06Backend and dataLogins, database and payments, one prompt at a time.
  7. 07Frontend and designScreens, colors and a simple logo that look professional.
  8. 08Go livePut it online, then submit to the App Store and Google Play if it is a mobile app.
  9. 09Marketing planLaunch posts, local outreach and your first 100 users.
  10. 10Launch and growShip it and add your live link to earn the Shipped badge.
Your full playbook for Oil LogEvery step spelled out for this idea, with the exact prompts to paste into your AI.
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