dapter: Notes That Do Math
Notepad calculator, offline
Only for iPhone
Free · In‑App Purchases
iPhone
Write 200 usd in eur on any line and watch it resolve. A notes app with a real
calculation engine inside — no account, nothing to sign up for.
Apple Notes, if it could do math.
Type rate = 45 on one line and rate × hours on the next, and the answer appears in
the margin as you type. Every line that looks like a calculation resolves instantly.
Everything else stays prose.
No account. No servers of ours. Nothing to sign up for.
WRITE MATH LIKE A SENTENCE
• 20% of 300, 200 - 10% — percentages, markups and discounts the way you'd say them
• 100 usd in eur, $50 + 20% — live currency rates, formatted as money
• 10 km + 5 m in miles, 6 m / 2 s → 3 m/s — real unit algebra, not string replacement
• today + 21 days, 3 days + 12 hours — dates and durations that count themselves
A NOTE THAT ADDS ITSELF UP
• Name a value and reuse it: rate = 45, then rate × hours three lines later
• sum a block for budgets, receipts, invoices and quick tallies
• round, sqrt, pi and the rest, for when a note needs to be a little smarter
STILL A REAL NOTES APP
Folders, pinned notes, search, a home-screen widget, Recently Deleted, and a quick
scratch pad one tap from anywhere. Light and dark themes. Available in English,
Russian and Kazakh — and the calculator understands all three, because the parser
does, not just the interface.
PRIVATE BECAUSE OF HOW IT'S BUILT
Every calculation runs on your device. Your notes live in local storage on your
iPhone, not in an account with us. All the math, unit conversion and currency work
is free, forever — there is no calculation behind the paywall.
BUILT FOR
Freelance quotes and invoices. Monthly budgets. Travel money. Recipe scaling. Any
moment you'd reach for a calculator and then forget what the numbers were for.
DÄPTER PLUS
Unlimited notebooks, and iCloud sync across your iPhones through your own Apple
account. Monthly, yearly, or a one-time lifetime unlock — pay once and you're done.
Plus is what keeps däpter independent: no ads, no investors, no data sold.
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.
Folders
Your notes have somewhere to go. däpter opens on a folder list now: All Notes
at the top, then yours, each row carrying a count of what's inside. Tap one to
see just those notes.
Make a folder, rename it, or delete it with a swipe. Move a note in from the
swipe menu on any note row, or from the editor's own menu. A note you start
inside a folder belongs to it from the first keystroke.
Search still searches everything, wherever you are.
Deleting a folder asks first, and the notes inside keep their 30 days in
Recently Deleted rather than going with it.
Quick note
Tap the däpter logo for a scratch pad that's always there. It does the math as
you type like any other note, but there's no title, no row in your list and
nothing to clean up. Whatever you leave in it is waiting next time.
Also new
Folders sync over iCloud alongside your notes, so the ones you made on your
iPhone show up on your iPad. Needs däpter Plus.
The welcome tour is one screen that moves with you instead of five that flick
past.
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
- 68.1 MB
- Category
- Productivity
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 2 more
- English, Kazakh, Russian
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Dapter Plus Yearly $4.99
- Dapter Plus Monthly $0.99
- Dapter Plus Lifetime $9.99
- Copyright
- © 2026 shy studio
