däpter – notes that calculate
Calculate as you type
Only for iPhone
Free · In‑App Purchases
iPhone
Notes that do the math as you type. Write "120 × 1.2" or "100 usd in eur" on any line and the answer appears instantly. No calculator, nothing leaves your phone.
däpter is the notes app that does the math for you.
Just start typing. Any line that looks like a calculation lights up and shows its answer in the margin — instantly, as you type. The rest stays plain text. It's a notebook and a calculator in one, and it speaks plain English.
WRITE MATH LIKE A SENTENCE
• 2 + 2, (120 × 1.2) / 4 — answers appear the moment you type them
• 20% of 300, 200 - 10% — percentages, markups and discounts the way you'd say them
• 100 usd in eur, $50 + 20% — live currency conversion with proper money formatting
• 10 km + 5 m in miles, 6 m / 2 s → 3 m/s — real units that convert and combine correctly
• today + 21 days, 3 days + 12 hours — plan, count down and schedule inside a note
MAKE A NOTE INTO A TINY SPREADSHEET
• Name values and reuse them: rate = 45, then rate × hours on a later line
• Running totals: sum a block for budgets, receipts and quick tallies
• Built-in functions and constants: round, sqrt, pi, and more
PROSE AND NUMBERS, TOGETHER
Write like you normally would. Only the calculation lines light up, syntax-highlighted live so a note reads clearly at a glance. One broken line never breaks the rest of your note.
PRIVATE BY DESIGN
Everything is computed on your device, with no servers and no account. Your notes and numbers never leave your phone. All the calculating, unit conversion and currency math is free, forever.
BUILT FOR EVERY DEVICE
A clean, native, Apple-Notes-style experience on iPhone and iPad, with light and dark themes. Available in English, Russian and Kazakh.
DÄPTER PLUS
Upgrade to Plus for unlimited notebooks and to support independent, local-first software. Available as a monthly, yearly or one-time lifetime purchase.
Perfect for budgets, invoices, travel planning, freelance quotes, recipes, quick estimates — anywhere you'd otherwise reach for a calculator and then forget what the numbers were for.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
däpter now speaks volume — gallons, cups, tbsp, and any length³. Type your tank, get your liters.
The developer, Anuar Shaidenov, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Anuar Shaidenov
- Size
- 64.4 MB
- Category
- Productivity
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later.
- iPhone
- Languages
English and 2 more
- English, Kazakh, Russian
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Dapter Plus Yearly $19.99
- Dapter Plus Monthly $3.99
- Dapter Plus Lifetime $59.99
- Copyright
- © 2026 shy studio