Version 1.3.0

The calculator
that
remembers.

DIGITCA is a tape calculator for iPhone. Every step stays on the tape. Go back, fix a number, remove a line or keep going. The result updates instantly.

Dictate calculations, convert currencies and export the finished tape.

iPhone · one payment · no subscription

DIGITCA DG-79 Retro, Personal Tape Calculator DIGITCA DG-79 Dark, Personal Tape Calculator
Tape

Every
calculation
stays.

The tape remembers every step. Go back to any line, change a number, add a note or skip an item; the result updates instantly.

You forgot to add transport. Add a line — the total recalculates. The client sees every step. No black box, no just trust me.

Natural language

Say it.
Type it.
It calculates.

Write "lunch for 4 with 15% tip" and you're done. Czech, English, voice or text. DIGITCA figures out the rest.

Type "lunch for 4 with 15% tip" or just say it. In English, Czech, or German. DIGITCA gets it.

Time, dates, VAT or a tip. Just write it naturally.

Archive

Save it.
Come back.
Lock it.

Save, name and reopen any tape whenever you need it. Lock sensitive calculations in a vault.

Quote from the first company. Quote from the second. A week later you open it, compare, decide. Lock sensitive calculations with biometrics.

Converter

161 currencies.
Ten categories.
One calculation.

Convert currencies right inside the calculation and keep going without retyping. DIGITCA also handles unit conversions: weights, lengths, temperatures.

Everyone paid in a different currency. Convert right inside the tape and keep going — no retyping, no browser tab.

CZK EUR USD °C/°F KG FT/M
Export

Calculate.
Send it on.

Send your finished tape as PDF, CSV, Markdown, plain text or video for Reels and Stories. No retyping, no copy-paste.

The tape for your client. Send as PDF — every line, every item, transparently. Or straight to video for Stories.

PDF CSV MARKDOWN TXT VIDEO SHARE
Design

Big display.
One-thumb
control.

Designed so the entire button interface stays within comfortable reach. Even on Pro Max.

Even on Pro Max. One thumb. Really.

DIGITCA, big display, one-thumb operation
Scientific mode

Sin. Cos.
Tan.
And 9 more.

Swipe left on the standard keyboard and you get a full scientific mode. Twelve functions, fully audited and documented in the manual.

Swipe left. The standard keyboard becomes scientific. Twelve functions, one gesture.

21 themes, plus one hidden.

A calculator that looks the way you want.

The twenty-second is a bit Lost.

All BlackAll Black
BlueprintBlueprint
BrutalistBrutalist
BullionBullion
DieterDieter
GateGate
InnieInnie
GlassGlass
KoyomiKoyomi
MarinaMarina
MidnightMidnight
NeonNeon
OutieOutie
PalmtronPalmtron
Pixel ArtPixel Art
RedditReddit
RisoRiso
SolsticeSolstice
SunsetSunset
SwissSwiss
TexasTexas
???
Promise

No ads.
Zero. None.

Digitca earns through sales, not your attention. No banners, no popups, no "sponsored".

Privacy

No
tracking.

Data Not Collected. No analytics SDK, no cloud accounts, no mystery requests.

Price

One
payment.

€4.99

Once and forever. No subscription.

Origin

Made in Břevnov.

One developer, one neighbourhood, one focus. No investors, no ads, no bloat.

Fair pricing.
Once and for ever.

Digitca

Free to download

  • Editable tape
  • Comments and flags
  • Natural language (text + voice)
  • Converter: 161 currencies + 10 units
  • Light and dark themes
  • No ads, no tracking
Full · Most popular

Digitca Full

€4.99 · one-time · Family Sharing

  • No subscription, forever
  • Lockable tape archive
  • Export: card, PDF, CSV, Markdown, TXT, video
  • Custom logo, tape customization
  • 17 premium color palettes
  • 17 exclusive app icons
  • 4 premium digit fonts & 4 sound packs
Get Full →
About

Why DIGITCA looks the way it does.

You grew up with calculators that were things. They had weight, they clicked, they smelled of plastic. The digits glowed orange on a black display and there was something reassuring about them that today's apps have lost.

When I started building DIGITCA, I knew one thing: I didn't want another grey grid of buttons. I wanted a calculator that someone looks at and thinks: yeah, I like this. For waiters, drivers, accountants, students and tradespeople. For anyone who wants to quietly work out their numbers.

Aesthetics aren't a luxury. They're respect for the person holding the app.

DIGITCA is a tribute to the old, reliable machines that simply calculated. No subscription, no cloud, no ads and no unnecessary tracking.

They just calculated.

Author's signature
Download on the App Store

Free to download · Full for €4.99 inside the app