Comparison

TechniCalc Calculator vs Keka

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

TechniCalc Calculator

This app offers a modern, intuitive interface for complex calculations, supporting scientific, engineering, and advanced mathematical functions. It allows natural equation entry, provides a formula book, and includes unit and currency converters. Available across Apple devices, it caters to students and professionals needing a powerful calculation tool.

Highlights
  • Natural equation entry
  • Advanced math engine
  • Formula book and equations
  • Unit and currency converter
  • Statistics mode
  • Equation solvers
  • Supports multiple Apple devices
Features
Read full description

TechniCalc is every bit functional as it is beautiful. The modern interface that makes a clean break from traditional pocket calculators. Equations are entered in a natural way, adhering to every detail of hand-written maths. The advanced maths engine also makes this the only calculator you'll ever need. ◉ FEATURES ▸ Runs on iPhone, iPad, and macOS - with an Apple Watch companion ▸ Dark mode ▸ Supports split screen and wireless keyboards ▸ Shows the full equation as you type ▸ Basic calculations (+, -, ×, ÷, %) ▸ Brackets ▸ Square and cubic roots ▸ Exponents and logarithms ▸ Trigonometry (sin, cos, tan) ▸ Degrees, radians, and gradians ▸ Constants (pi, e, and over 100 other physical constants) ▸ Formula book and equations ▸ Calculation history ▸ Unit converter ▸ Currency converter ▸ Statistics mode ◉ ADVANCED MATHS ▸ Almost unlimited number sizes - over 1,000,000 factorial ▸ Square roots and logarithms with any base ▸ Factorial, nPr, nCr, and gamma ▸ Hyperbolic trigonometry (sinh, cosh, tanh) ▸ Vectors and matrices ▸ Imaginary and complex numbers ▸ Series sums and products ▸ Numerical integration and differentiation ▸ Binary, octal, and hexadecimal ▸ Programmer mode ◉ EQUATION SOLVERS ▸ Quadratic ▸ Cubic ▸ Systems of 2 and 3 linear equations ▸ Root finder

About

Keka

This app allows you to compress and encrypt files for secure storage and sharing. It also supports browsing and extracting a wide variety of compressed file formats, including encrypted and encoded archives.

Highlights
  • Compress files in multiple formats
  • Encrypt files for secure sharing
  • Extract various archive formats
  • Support for 7Z, ZIP, RAR, TAR, and more
  • Handle encrypted and encoded archives
Features
Currently charting
Read full description

Keka is a full featured file archiver, as easy as it can be. With Keka you can compress as many files as you want in a bunch of formats. You can also encrypt them to store and share securely and with privacy. Keka can also browse and extract lots of compressed files, from ZIP and 7Z to RAR archives. Whether they are encrypted or encoded in with old charsets this is not a problem for Keka. Compression formats supported: 7Z, ZIP, TAR, ZSTD, GZIP, BZIP2 and AppleArchive (AAR) Extraction formats supported: 7Z, ZIP, RAR, TAR, GZIP, BZIP2, AAR, XZ, ZSTD, ISO, LZMA, EXE, CAB, MSI, PAX, JAR, APK, APPX, XPI, IPA, CPGZ, CPIO, XIP, CPT and many more Terms of Use: https://www.keka.io/termsofuse

Screenshots

TechniCalc Calculator4 screens
Keka4 screens

Verdict

The call

The clearest difference is in-app purchases: Keka at none against TechniCalc Calculator's 4. Keka also leads on price ($3.99 vs $7.99) and chart position (#41 vs unranked). On rating, review sentiment, ratings volume and update cadence there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

TechniCalc Calculator costs $7.99 and Keka $3.99 up front. TechniCalc Calculator sells 4 one-off in-app purchases. Keka asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for TechniCalc Calculator against 4.8 for Keka. Both are backed by a comparable volume of ratings — 84 and 166 respectively. Written reviews are what separate them: 85% of TechniCalc Calculator's written reviews are positive against 82% of Keka's.

UpkeepUpdate frequency

TechniCalc Calculator ships an update monthly, Keka every 2 months. The most recent releases landed on November 13, 2026 and November 14, 2026 respectively.

Scorecard4 real differences · 7 level
TechniCalc Calculator versus Keka: the parameters behind the verdict, then further details
ParameterTechniCalc CalculatorKeka
Price$7.99$3.99 — better
Rating4.7 (84 ratings)4.8 (166 ratings) — better
Positive reviews84.6% of reviews — better82.4% of reviews
Number of ratings84166 — better
Update frequencyMonthly — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank—#41 — better
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone, iPad, Vision Pro
Requires iOS17.0 — better18.5
Further details — not scored
Size31 MB42 MB
Age rating4+4+
DeveloperJacob ParkerJorge Garcia Armero

Customer experience

TechniCalc Calculator

All ratings84 ratings
Positive90.5%
Neutral6.0%
Negative3.6%
Written reviews39 reviews
Positive84.6%
Neutral12.8%
Negative2.6%

Keka

All ratings163 ratings
Positive95.7%
Neutral0.6%
Negative3.7%
Written reviews68 reviews
Positive82.4%
Neutral5.9%
Negative11.8%

User reviews

TechniCalc Calculator

From 84 App Store ratings

What we love

  • ✨ Beautiful and clean UI
  • 🚀 Powerful and versatile functionality
  • 👍 Intuitive and easy to use
  • 💡 Extensive features for scientific and basic use
  • 👨‍💻 Responsive and dedicated developer

Room to improve

  • 🐛 Interface scaling issues on iPad (split screen/windowed mode)
  • 🐛 UI elements (keypad, sidebar) become enormous when resized
  • 🐛 Calculations get squished at the top of the window
  • 🐛 Matrices overlap on themselves when resized
  • 🐛 Text too small and light on iPad

Keka

From 166 App Store ratings

What we love

  • 👍 Intuitive and simple UI
  • 🚀 Fast and powerful archiving
  • 💰 Affordable one-time purchase
  • 🚫 No ads or subscriptions
  • 🍏 Seamless integration with Apple ecosystem

Room to improve

  • 🐛 Fails when resuming background tasks
  • 🐛 Compression sometimes fails
  • 🐛 Inconsistent decryption with some formats
  • 🐛 Inability to name archives before compression
  • 🐛 Cannot compress multiple folders at once

Bugs and requests

TechniCalc Calculator

Reported bugs

18 issues
  • Interface scaling issues on iPad (split screen/windowed mode)
  • UI elements (keypad, sidebar) become enormous when resized
  • Calculations get squished at the top of the window
  • Matrices overlap on themselves when resized
  • Text too small and light on iPad
Show 13 more
  • Unit converter is time-consuming to change units
  • Matrix dimensions are not always possible (e.g., 3x2)
  • Lacks basic matrix functions like reducedRowEchelon
  • Complicated to use for some matrix operations
  • No real instruction manual, reference section incomplete
  • Inconsistencies in signs with decimal numbers (magnitude correct, sign always positive)
  • Some calculations can be slow after currency update
  • Real and imaginary breakout functions have strange behavior
  • Window size cannot be changed on macOS
  • Cannot force quit on macOS, requires restart
  • Not easily findable on macOS
  • No way to leave a second tip for the developer
  • Resent not being able to email the developer directly

Requested features

15 requests
  • Functionality on Apple Watch
  • Option to change divide sign to /
  • Multi-line history on the top
  • Color coding for grouped buttons
  • More interface customization
Show 10 more
  • Option to color the background of calculator buttons
  • Widget for quick access
  • Favorites menu for unit conversions
  • Syncing of saved equations and settings across devices
  • Easier way to solve for a parameter in an equation without initial guesses
  • Export operations as LaTeX
  • Decimal to mixed number form conversion
  • Unlock different background colors/themes and app icons
  • Adjust font size to be bolder and larger on iPad
  • Improved functionality in low light and outside

Keka

Reported bugs

13 issues
  • Occasional decryption failures
  • Compression fails when using the share button
  • Background tasks fail when resuming
  • Permission to access files reappears after being revoked
  • Cannot decompress .part files
Show 8 more
  • Cannot decompress .tar.gz files
  • Cannot decompress LZ4 files
  • Windows compatibility issues with character encoding
  • Removal of .7z AES256 encryption support
  • Inability to decompress external split archives
  • Extraction failed errors reported by some users
  • Compression fails for large numbers of files
  • Permission bug: permission reappears after revoking

Requested features

14 requests
  • Add support for .tar.gz decompression
  • Add support for .part files
  • Add option to name archives before compression
  • Add ability to compress multiple folders at once
  • Add ability to add files to existing compressed files
Show 9 more
  • Add option to delete compressed file after compression
  • Add option to view documents without creating a copy
  • Add password confirmation fields
  • Add testing of archives for integrity
  • Add support for LZ4 file decompression
  • Add support for splitting archives on iOS (like macOS)
  • Add Chinese language support
  • Improve German translation quality
  • Clarify location of 'keka folder'

In-app purchases

4 purchases

TechniCalc Calculator

One-time4
  • Every Little Helps$0.99
  • Coffee-Sized Tip$2.99
  • Lunch-Sized Tip$4.99
Show 1 more
  • Pizza-Sized Tip$9.99
None

Keka

No in-app purchases

Questions

Is TechniCalc Calculator free?
TechniCalc Calculator costs $7.99, and also offers in-app purchases.
Is Keka free?
Keka costs $3.99, with no in-app purchases.
Which has better reviews, TechniCalc Calculator or Keka?
Keka is rated higher. TechniCalc Calculator averages 4.7 out of 5 from 84 ratings, while Keka averages 4.8 from 166 ratings.
Do TechniCalc Calculator or Keka have ads?
Neither TechniCalc Calculator nor Keka shows ads.
Which is updated more often, TechniCalc Calculator or Keka?
TechniCalc Calculator ships an update monthly, and Keka every 2 months. Most recently, TechniCalc Calculator was updated on November 13, 2026 and Keka on November 14, 2026.

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