Comparison

FastCalc vs Komaca

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

Head to head
About

FastCalc

This calculator app offers a streamlined experience with large, easy-to-use keys and an innovative gesture-based interface. It displays your ongoing expression and results in real-time, eliminating the need for an equals button. Advanced features include percentage calculations and customizable constants.

Highlights
  • Large, practical keys
  • Permanent expression display
  • Automatic real-time results
  • Gesture-based input
  • Customizable constants
  • Advanced percentage mode
Read full description

FastCalc is a calculator recognized for its efficiency and ease of use. It stands out thanks to: • its large keys, which allow for fast and accurate input, • the permanent display of the expression entered by the user, • the automatic display of the result while typing: no “=” key required! FastCalc is thus suitable both for everyday calculations and for more advanced use. BASICS OF USE The interface of FastCalc is innovative and minimalist, entirely based on simple gestures: • Select a side symbol on a key: slide your finger in its direction. • Delete the last entered elements: make a small swipe to the left on the display. • Clear the entire expression: swipe quickly to the left across the whole display. • Store a result in a memory: tap the result and choose the desired memory. FEATURES • Large, practical, and easy-to-read keys. • Customizable constants. • Advanced mode for percentage calculations. • Permanent display of the current expression and temporary memories. • Automatic storage of the previous result (ANS) each time an expression is cleared. • Integrated help videos and user guide (in ⓘ). SETTINGS • Enable interface sounds and adjust their volume. • Enable advanced mode. • Choose the number of displayed decimals and the thousands separators. • Customize the colors of the keypad and the expression.

About

Komaca

Easily create professional, mobile-friendly websites for your business, store, or hobby group without any technical expertise. Focus on your vision while the app handles the complex website building process for you.

Highlights
  • Free website creation
  • Mobile-friendly design
  • Desktop compatibility
  • No technical expertise needed
  • Focus on creative vision
Read full description

Start building your website for free with Komaca. Whether you're creating an official page for your business, store, or even your hobby group, our app makes it incredibly simple to craft a mobile-friendly site. And don't worry—sites built with our app look just as great when viewed on a desktop. If you've ever thought you need to study up to create a website, think again. With Komaca, all the technical heavy-lifting is done for you, so you can focus on bringing your vision to life. Get started for free and make your first website the best it can be—with Komaca.

Screenshots

FastCalc4 screens
Komaca3 screens

Verdict

The call

The clearest difference is price: Komaca at Free against FastCalc's $1.99. Komaca also leads on in-app purchases (none vs 4) and update cadence (every 3 weeks vs every 5 months). FastCalc's advantage is rating (4.8 vs 3.7) and ads (none vs shown). On ratings volume and device support 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

Komaca is free to download; FastCalc costs $1.99 up front. FastCalc sells 4 one-off in-app purchases. Komaca asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

FastCalc holds the better App Store score, 4.8 against 3.7. Both are backed by a comparable volume of ratings — 4 and 3 respectively.

UpkeepUpdate frequency

FastCalc ships an update every 5 months, Komaca every 3 weeks. The most recent releases landed on July 17, 2026 and September 17, 2026 respectively.

Scorecard7 real differences · 3 level
FastCalc versus Komaca: the parameters behind the verdict, then further details
ParameterFastCalcKomaca
Price$1.99Free — better
Rating4.8 (4 ratings) — better3.7 (3 ratings)
Positive reviews80.0% of reviews—
Number of ratings4 — better3
Update frequencyEvery 5 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationPaidAd-supported — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.017.0 — better
Further details — not scored
Size8 MB88 MB
Age rating4+4+
DeveloperAndre PonzoChia Inc.

Customer experience

FastCalc

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews15 reviews
Positive80.0%
Neutral20.0%
Negative0.0%

Komaca

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

FastCalc

One-time4
  • Red Rivella$1.99
  • Homemade hot chocolate$6.99
  • Bircher muesli$12.99
Show 1 more
  • Moitié-moitié fondue$34.99
None

Komaca

No in-app purchases

Questions

Is FastCalc free?
FastCalc costs $1.99, and also offers in-app purchases.
Is Komaca free?
Komaca is free to download, with no in-app purchases.
Which has better reviews, FastCalc or Komaca?
FastCalc is rated higher. FastCalc averages 4.8 out of 5 from 4 ratings, while Komaca averages 3.7 from 3 ratings.
Do FastCalc or Komaca have ads?
Komaca shows ads; FastCalc does not.
Which is updated more often, FastCalc or Komaca?
FastCalc ships an update every 5 months, and Komaca every 3 weeks. Most recently, FastCalc was updated on July 17, 2026 and Komaca on September 17, 2026.

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