Karlog: Fuel & Mileage Tracker
Car Log, MPG & Service Records
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
No subscription. No account. No ads. One-time $19.99 upgrade unlocks unlimited logs, price charts, CSV import & iCloud backup. Free to start.
Karlog is the fuel and mileage tracker built for drivers who want simple, private, offline car logging — no account, no subscription, no ads.
Log every fill-up, track your real-world MPG or L/100km, and watch your fuel economy trend over time. Set oil change reminders by date or odometer. Store every service record in one place. Karlog works completely offline: your data never leaves your device unless you choose to back it up.
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KEY FEATURES
Fuel & Consumption Tracking
- Log fuel fill-ups with date, odometer, liters or gallons, and cost
- Automatic MPG, L/100km, and km-per-liter calculations after every entry
- Fuel cost per kilometer or per mile
- Full fill-up history with editable entries
- CSV and Excel import for existing fuel logs (Pro)
Oil Change Reminders
- Set your service interval by distance (km or miles) and by date
- Karlog alerts you when your next oil change is approaching
- Never miss a service window again
Maintenance & Service Log
- Record oil changes, cooling system, tires, brakes, and other services
- Store date, odometer, cost, and notes per record
- Set next-due reminders for each service type
Appointments & Reminders
- Schedule upcoming inspections, registration renewals, insurance renewals, and washes
- Mark appointments as done
Monthly Driving Budget
- Set a monthly kilometer or mileage goal per vehicle
- Color-coded progress card shows how much of your budget you have used
- Alerts at 80% and 100% so you stay aware of your driving spend
Electric Vehicle & Hybrid Support
- Supports traditional ICE, hybrid, PHEV, and fully electric vehicles
- Log kWh charging sessions alongside or instead of fuel fill-ups
- Price-per-kWh trend chart tracks your charging costs over time (Pro)
Price Trend Charts (Pro)
- Line charts showing fuel price per liter over time
- kWh price trend for EV and PHEV vehicles
- Requires at least 2 data points to render
Data Import & Backup (Pro)
- Import existing fuel logs from CSV or Excel files
- iCloud backup and restore — your data syncs across your devices
- Local file export always available
Privacy & Offline First
- 100% offline — no network requests from core app logic
- No account required, no login screen, no sign-up
- No ads, no analytics, no tracking
- Your vehicle data stays on your device
12 Languages
English, French, Spanish, German, Portuguese, Arabic, Chinese, Japanese, Korean, Khmer, Thai, Vietnamese
Metric & Imperial
Switch between km/liters and miles/gallons per vehicle. All conversions are display-only — data is stored consistently in the background.
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FREE VS PRO
Free (always free):
- 1 vehicle
- Up to 20 fuel logs
- Fuel consumption stats
- Oil change reminders
- Service and appointment records
- Monthly driving budget
- All 12 languages
Pro — $19.99 one-time purchase (no subscription, no renewal):
- Unlimited vehicles
- Unlimited fuel logs
- Price trend charts
- CSV and Excel import
- iCloud backup and restore
Pay once. Own it forever. No subscription. No price increases. No features locked behind a monthly fee.
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Karlog is built for drivers who want a clean, private, offline logbook for their car — not a SaaS dashboard with a recurring bill.
Download Karlog and start logging your first fill-up in under a minute.
Privacy Policy: https://supportdock.io/vandetho/karlog/privacy
Support: https://supportdock.io/vandetho/karlog
Ratings & Reviews
Fixed: importing a CSV or Excel file always failed with a format error, no matter what the file contained.
Import now understands spreadsheets written in your language — translated column names, local date formats (15.01.2026), decimal commas, and semicolon-separated CSV files.
New: download a ready-made import template under Backup, with the correct columns and example rows. Free for everyone.
Also fixed: Settings now shows the correct build number.
The developer, Lyhour Huy, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Lyhour Huy
- Size
- 72.4 MB
- Category
- Utilities
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - iPad
Requires iPadOS 16.4 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Karlog Pro $19.99
- Copyright
- © 2026 Vandeth Tho. All rights reserved.