Blog
Practical guides to keeping a car in shape, with sources, and honest comparisons of the apps that help. We make Wrenchy, so the comparisons say so at the top.
Guides
- Selling a car: which service records to show the buyer Which maintenance records to show when you sell a car, why buyers ask for them, how they back up the odometer reading, how to check open recalls first, and what to do if records are missing. With sources.
- How to keep a car maintenance log (with a printable log) What to write down for each service, how to keep records when you do your own work, what to show a buyer, and a free printable car maintenance log.
- Car maintenance schedule: how often to do each service How often to change oil, rotate tires, check brakes, and replace filters, coolant, transmission fluid, spark plugs and the battery, with sources (AAA, NHTSA, FTC).
App comparisons
- Car maintenance apps for iPhone, compared (October 2026) Wrenchy, Car Cave, CARFAX Car Care, Drivvo, Fuelly, MyAutoLog, Simply Auto and Vehicle Maintenance Tracker compared: cost, ratings, last update, strengths and drawbacks. Written by the maker of Wrenchy.
- Wrenchy vs Drivvo: which car maintenance app? For staying on top of maintenance, Wrenchy: your own interval for every service, a guide to each one, document reminders, no ads and no account. Drivvo suits running-cost and trip tracking. A comparison by the maker of Wrenchy.
- Wrenchy vs Simply Auto: which car maintenance app? Simply Auto's iPhone app was last updated in March 2022, and recent reviews report crashes on iOS 18. Wrenchy is a current service log with your own intervals, no ads and no account. A comparison by the maker of Wrenchy.
- Wrenchy vs CARFAX Car Care: which car maintenance app? For DIY work, independent shops and your own intervals, Wrenchy: no account, records on your phone, document reminders. CARFAX Car Care is free and fills in records from network shops. A comparison by the maker of Wrenchy.
Keep your car's whole service history in one place
Wrenchy: Car Service Log, for iPhone and iPad. No account, no ads.
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