Switch from Fuelly, Drivvo, Fuelio or Spritmonitor and bring your history with you

Which apps can WrenchTime import from?

Four are recognised automatically: Fuelly, Drivvo, Fuelio and Spritmonitor. WrenchTime identifies each one from the column headers of its own CSV export, so there is no format to choose, and it reads columns by name rather than by position, so an export with extra columns still imports. Any other file that can be saved as CSV, whether another app's export or a spreadsheet you kept yourself, goes through a column mapper instead. Each run brings one file into one vehicle already in your garage; run it again for another vehicle or another file.

• Fuelly both of its exports. The app's file can hold several vehicles, and the import asks which one to bring in; the fuelly.com export comes as a fuel-ups file and a services file for one vehicle, and each imports the same way.
• Drivvo one vehicle's refuellings, charging sessions, services and expenses from a single export, including one whose column headers are in a language other than English.
• Fuelio one vehicle per file: fill-ups and charging sessions from its log, services and other costs from its cost list, with the units the file states.
• Spritmonitor the website's export, a fuellings file and a costs file per vehicle, with headers in German or English.
• Anything else any CSV with a header row, from another app or a spreadsheet, matched column by column in the mapper.

How do I export my data from Fuelly, Drivvo, Fuelio or Spritmonitor?

Each app writes its own CSV file, and that file is all WrenchTime needs. Save it where the Files app can reach it, such as iCloud Drive, or save the attachment when an app emails the export to you, then choose it in Import from CSV. Where each app keeps its export, according to its own help pages:

• Fuelly in the app, Export Data in the Settings menu emails you one CSV holding every vehicle. On fuelly.com, a vehicle's page has an Export Fuel-ups link below its log book.
• Drivvo the export icon at the top of the History screen saves a CSV.
• Fuelio Settings, Backup, Export CSV. A Fuelio backup in Dropbox or Google Drive also keeps CSV files in a backup-csv folder, which helps when the old phone was an Android one.
• Spritmonitor the export is on the spritmonitor.de website and gives each vehicle a fuellings file and a costs file. Import both into the same vehicle.
• If a menu has moved look for Export, Backup or CSV in the app's settings or on its website. A CSV about the vehicle is what you want; a PDF or Excel report will not import.

What happens to miles, gallons and a different currency?

Units are read from the file wherever it states them and asked for where it does not, and every figure is then converted like any other entry, so a history logged in miles and US gallons reads correctly in kilometres and litres, and the reverse. Amounts come in as written; for a history kept in another currency, enter a conversion rate and every amount is multiplied by it.

• Stated in the file Fuelio, Drivvo and Fuelly exports say which distance and volume units they use.
• Asked in the preview Spritmonitor's export carries no units at all, so the preview asks which ones your account was set to.
• Two gallons when Fuelly writes gallons it does not say which, so they are taken as US gallons and the preview asks you to confirm. A British history in imperial gallons is put right there, before anything is saved.
• Dates and decimals when every date in the file could be read more than one way, the import asks which order the other app wrote them in. Numbers are read with a decimal point or a decimal comma, with or without a currency symbol.
• Currency there is no live exchange-rate lookup: the rate you enter is the one applied, and the preview shows what an amount in the file becomes before you import.

Will importing create duplicate entries?

No. Before anything is saved, every row is compared with what the vehicle already holds, and a row with the same day and the same odometer, volume, energy, procedure, service name or reading as an existing entry is skipped as a duplicate and listed next to the entry it matches. Importing the same file twice adds nothing the second time, and a later export of the same log brings in only the rows that are new since. The preview shows every entry as it will be saved, in your own units and currency, as counts per record type that open into the individual rows, and lists every row left out with its reason and its line number in the file.

Can I undo an import?

Yes, in one step. Every import gets a tag of its own, named after the source app and the day, such as Imported from Fuelly followed by the date, and numbered if that name is already taken. Every entry the import added carries that tag, so you can check what came in, and in Settings, Data & iCloud, Data Cleanup, picking that tag deletes exactly the entries of that import and leaves everything you logged yourself. The one thing an undo leaves alone is the vehicle's odometer, which you set by hand from the vehicle's page if it needs to go back; the app says so when the import finishes.

What happens to my odometer when I import?

It can only go up. When the file holds a reading higher than the vehicle's current odometer, the odometer is raised to that highest reading, and the preview says from what to what before you confirm. An import never lowers it, so an old export cannot roll the car back to last year's mileage. Undoing an import does not lower it either; correct it by hand from the vehicle's page if you need to.

Can I import an Excel, Numbers or Google Sheets spreadsheet?

Yes, once it is saved as CSV. The import reads text files, not workbooks, so an .xlsx or .numbers file is not read; Excel, Numbers and Google Sheets can all save or download a sheet as CSV. A CSV that does not come from one of the four recognised apps opens a column mapper, where you say what each row is and which column holds what.

• One kind of row per import a fill-up, a charging session, a care entry or an odometer reading. A workbook with fill-ups on one sheet and services on another becomes two CSV files and two imports.
• The columns date, odometer, volume or energy, total cost, unit price, full tank, fuel type, station, notes, service and category, among others. A fill-up needs a date and either the volume or the total cost; a care entry needs a date and either the service or its category.
• Prefilled for you on a device with Apple Intelligence the mapper arrives filled in by Apple's on-device model, and elsewhere by matching the column names; either way you check it before continuing.
• Any layout comma, semicolon or tab separated, with extra columns in any order. Columns are matched by their header, so a header row is the one thing the file must have.

Is importing free, or does it need WrenchTime Pro?

Import from CSV is part of WrenchTime Pro; on the free tier, the row in Settings opens the Pro offer instead. Pro is a monthly or yearly subscription with a free trial, or a one-time lifetime purchase. The way out stays free: CSV and PDF export of your vehicles is on the free tier, so a history you bring in can always leave again as a file.

Where does my data go during an import?

Nowhere but your own device. The file is read and converted on the iPhone or iPad; there is no WrenchTime server to upload it to and no account to create, and Apple Intelligence, where it helps with service names and columns, runs on the device too. From then on the imported entries are ordinary WrenchTime entries, synced through your own private iCloud when iCloud Sync is on. Nothing is deleted or changed in the other app: the import reads a copy of your data, so the old app keeps its history until you decide otherwise.