modifyd.

modifiedd. is the tuning app for serious mechanics and tuners — your digital logbook for modifications, performance, and costs. Everything in one place, completely offline, no account required.

🔧 TRACK MODIFICATIONS
Document every modification to your car: parts, costs, date, photos, and notes. From the suspension to the ECU — modifiedd. keeps track of everything you've installed. Your entire project at a glance.

⚡ CALCULATE POWER
How much horsepower does your car really have? modifiedd. automatically calculates your vehicle's current power output based on all modifications — including ECU swaps, chip tuning, and power measurements. Always up-to-date, always accurate.

🏁 MEASURE PERFORMANCE
Measure your 0-100 km/h time, quarter-mile sprints, and other performance metrics directly in the app. Compare your results before and after modifications — and see in black and white what your modifications have achieved.

🔊 MEASURE DECIBELS
How loud is your exhaust really? With the integrated dB meter, you can measure your vehicle's sound directly via your smartphone's microphone.

📦 MANAGE YOUR INVENTORY
Keep track of all the spare parts you haven't installed yet. Which parts are sitting in the garage? What's still waiting to be installed? modifiedd. helps you keep your inventory organized.

📊 STATS & COSTS
How much did your project cost in total? What's your cost-to-horsepower ratio? modifiedd. analyzes your data and shows you trends, total costs, and your performance development over time.

📷 GALLERY
Document your project with photos. Add pictures to each modification and see how your car has changed over time.

🚗 MULTIPLE VEHICLES
Do you have more than one car? No problem. modifiedd. Supports any number of vehicles — perfect for anyone running multiple projects simultaneously.

🔒 YOUR DATA BELONGS TO YOU
All data is stored exclusively locally on your device. No account, no cloud requirement, no advertising. You decide what happens to your data. Export and import for backups are possible at any time.

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Whether you're modifying a VW Golf, a BMW, or your Japanese car — modified. is your personal companion for every step of your project.

For mechanics. By a mechanic.

📥 Download now for free and document your project.