Budget dashboard
See your total adjusted cost at a glance, both monthly and yearly, to fully understand your real spending.
Native app for iPhone, iPad, Mac and Apple Watch
Custos
Stay on top of your budget.
Anticipate your renewals.
No more surprise auto-renewals. Track your monthly or yearly subscription expenses, get notified the exact day of the notice deadline, and generate cancellation letters in one click.
What’s new in version 1.2.0
Custos comes to the Mac. A three-column interface with an inspector, a full menu bar and keyboard shortcuts, the Cash flow view, a widget for upcoming renewals, Siri and Shortcuts. Universal purchase: Custos for Mac is included if you already own the iPhone and iPad version.
What’s new in version 1.2.0
Custos comes to Apple Watch, complications included. A new Cash flow view, a cancellation countdown on the Lock Screen, Lock Screen and StandBy widgets, bank statement import with no connection to your bank, the “What leaves this device” screen, and seven languages: French, English, Italian, Spanish, German, Japanese and Simplified Chinese.
01
Features
Take back control, simply.
Cash flow
The month’s schedule, day by day, broken down by bank account. Not a monthly total: a calendar of charges.
Notice alerts
Get notified on your device the exact day the cancellation deadline hits, for every subscription.
Calendar sync
Add your renewal dates to your calendar with 5 automatic reminders (from 1 month to notice day) so you never miss it.
Cancellation generator
Fill in your details once, then instantly generate an email or letter template ready to copy and send.
Accounts & members
Link each subscription to a bank account and a household member to always know who pays for what.
100% local & private
No accounts, no remote servers, no trackers. Your financial information stays exclusively and securely on your devices.
On your Mac
A three-column interface with an inspector, a full menu bar and keyboard shortcuts. A permanent menu bar summary tells you what is coming due.
On your wrist
Your next deadlines on the Apple Watch screen and in your complications, so you are warned without reaching for your iPhone.
02
Your subscriptions,
Preview
Your subscriptions,
under control.
Five iPhone screens, in the language of this page.
Costs smoothed monthly and yearly, alerts up top, breakdown by category.
The cancellation deadline, worked out from the notice period, and its alert.
Email or registered letter, amount, reference and date already filled in.
The month’s outgoings, split by bank account, with a day-by-day schedule.
The screen lists the only possible destinations for your data, and their state.
03
The same view,
On iPad
The same view,
with room to breathe.
The same screens on iPad, in the language of this page.
Costs smoothed monthly and yearly, alerts up top, breakdown by category.
The cancellation deadline, worked out from the notice period, and its alert.
Email or registered letter, amount, reference and date already filled in.
The month’s outgoings, split by bank account, with a day-by-day schedule.
The screen lists the only possible destinations for your data, and their state.
04
Three columns,
On Mac
Three columns,
and the menu bar.
Four Mac screens, in the language of this page.
Costs smoothed monthly and yearly, alerts up top, breakdown by category.
The cancellation deadline, worked out from the notice period, and its alert.
Email or registered letter, amount, reference and date already filled in.
The month’s outgoings, split by bank account, with a day-by-day schedule.
05
The essentials,
On the wrist
The essentials,
without the iPhone.
Two Apple Watch screens, in the language of this page.
What is still to be cancelled, and in how many days.
Your next charges, without reaching for your iPhone.
06
Your deadlines,
Siri, Spotlight & Shortcuts
Your deadlines,
by voice or in one tap.
Four Custos actions, each recognised through three phrasings, on iPhone, iPad, Mac and Apple Watch.
Check upcoming renewals
- « Show upcoming renewals in Custos »
- « Which subscriptions renew soon in Custos »
- « List my next renewals in Custos »
Know your budget
- « Check my total cost in Custos »
- « Work out my spending in Custos »
- « How much do my subscriptions cost in Custos »
Add a subscription
- « Quickly add a subscription in Custos »
- « New subscription in Custos »
- « Record a subscription with Custos »
Draft a cancellation
- « Generate a cancellation letter in Custos »
- « Cancel a subscription with Custos »
- « Draft a cancellation email in Custos »
- 01 Upcoming due dates Lists subscriptions renewing within the next thirty days, with the amount and the time left.
- 02 Total cost Adds up the cost of all your subscriptions, monthly or yearly, as you prefer.
- 03 Quick add Creates a subscription from a name, an amount and a start date, without opening the app.
- 04 Cancellation letter Drafts an email or a registered letter for the chosen subscription, amount and renewal date already filled in.
07
Data and privacy
Your financial data remains yours.
Custos is built from the ground up around absolute privacy. No budget, bank account, subscription, or contact details are collected or shared.
100% local
Your entries reside on your iPhone via SwiftData. No account setup required.
iCloud optional
Syncing across your devices is disabled by default and relies solely on your secure Apple account.
Zero trackers
The app contains no ads, third-party analytics SDKs, or data selling.
We own no servers and run none: the app’s network traffic never goes to us. It comes only from Apple’s services — iCloud when syncing is on, and Apple’s notification service for Live Activities. Those exchanges happen inside your Apple account, under Apple’s terms.
privacy@rapinology.com →
08
Support
Need help?
Have a question, feedback, or a feature suggestion? The team is here to help.
support@rapinology.com →