cärn : carnet d'entretien

In-app purchases
Content rating
Everyone
10+
Downloads
Content rating
Everyone
Users Interact, In-App Purchases
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About this app

Your home and your car finally have a memory.

The filter reference, the location of the shut-off valve, the date of the last chimney sweep, the plumber's bill: all those things we jot down on a scrap of paper that we inevitably lose. cärn keeps it and shares it with those it concerns.

ONE NOTEBOOK PER PROPERTY
One notebook for the house, one for the apartment, one for each car. In each: reminders, dated deadlines, and a history of everything that has been done.

TIMELY REMINDERS
Set the date once—servicing, chimney sweeping, vehicle inspection, boiler maintenance, insurance. cärn notifies everyone in the notebook well in advance of the due date, and then again on the day itself. No one has to remember to do it alone anymore.

A HISTORY THAT IS SHARED
Each service record keeps its date, cost, who paid, and supporting documents. Photos and PDFs are stored next to the relevant entries. When you sell your house or car, the history is ready to hand over.

SIMPLE SHARING WITH OTHERS
A couple, siblings, your parents' house, a shared apartment, or a jointly owned property. Invite whomever you want with a code: everyone can see what's been done, add to the log, and receive reminders. Sharing is unlimited and free.

WHO PAID WHAT? Every expense is recorded with its amount and who paid. Brothers and sisters, spouses, roommates: everyone can see the true cost of the item and what each person contributed.

FREE, NO TIME LIMIT
A complete, shared logbook with reminders and documents: it's free, and it stays that way.

cärn+ adds unlimited logbooks, 5 GB of document storage, calendar synchronization, budget tracking, and full PDF export. Thirty-day trial, annual subscription cancelable at any time.

WHO IS IT FOR?
• Homeowners and renters who want to stop searching for the latest bill
• Families who jointly manage the parents' house
• Siblings in joint ownership who want to know who paid for what
• Drivers who keep a maintenance log for their vehicle
• Roommates and couples who share household expenses

cärn is a French app, ad-free. Your logs belong to you: you can export them and delete your account at any time from within the app.

cärn (carn) · getcarn.com
The shared maintenance log for the house and the car
Updated on
Oct 21, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info, Financial info and 4 others
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

Un nouveau compte ne reste plus bloqué au premier lancement.
Le retard d'une échéance s'affiche en semaines, puis en mois.
Les textes de l'export sont plus courts.
Content rating
Everyone
Users Interact, In-App Purchases
Learn more

App support

About the developer
SARDA ROMAIN
contact@romainsarda.com
BAT. A 51 RUE JACQUES OFFENBACH 31500 TOULOUSE France
+33 6 78 59 21 81