Comparison

Classicalc calculator vs Simple Time Converter

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

Head to head
About

Classicalc calculator

This calculator app offers instant calculations as you type, following the mathematical order of operations. It features unique piano sound themes and allows seamless continuation of calculations across iPhone and Apple Watch. Your equations are automatically saved for convenience.

Highlights
  • Instant calculation as you type
  • Mathematical order of operators
  • Cross-device continuity (iPhone/Watch)
  • Automatic equation saving
  • 14 piano sound themes
  • Copy result to clipboard
Read full description

Classicalc is a unique, the most classy calculator app on the App Store. It's designed to be beautiful and simple, but also… to sound amazing! Each color theme has its own, actual Grand Piano major scale! It's Chopin-awesome! Underneath it beautiful simplicity, there's some serious technology powering Classicalc: ## Instant Calculation calculates the formula as you type, so you never have to use the equals sign (=). We spare you one unnecessary tap at a time. ## Classicalc calculates result using mathematical order of operators (× ÷ + -) so if you would like to add 1 to 1 and then multiply the result by 2, you should write (1 + 1) × 2 instead of 1 + 1 × 2 ## You can start your calculations on your iPhone, then Continue on your Apple Watch, and the other way around. ## Your most recent equation is always saved, even if you shut the app. When you run it again, The formula is instantly there. ## 14 great-looking backgrounds with related actual Grand Piano major scales. Change colors and major scales on iPhone app (by pressing little diamond in top-left corner) to change colors on Apple Watch. ## In case the numbers bore you, you can always play a song. It's Chopin-awesome! *** Tips *** - long press "backspace" button to clear whole expression (you can also force touch on your Watch) - long press the result on your iPhone/iPad to copy it to the system clipboard

About

Simple Time Converter

This lightweight utility app performs simple time conversions without accessing any user data. Its core function is a straightforward algorithm for converting time values.

Highlights
  • Time conversion algorithm
  • Lightweight design
  • No user data access
  • Simple interface
Features
Read full description

We never show ads, and we never collect your data. A free app without the bloat. Compare the size of this app (~2MB) against other time conversion apps.

Screenshots

Classicalc calculator4 screens
Simple Time Converter3 screens

Verdict

The call

The clearest difference is price: Simple Time Converter at Free against Classicalc calculator's $0.99. Simple Time Converter also leads on rating (5.0 vs 3.8) and update cadence (every 3 weeks vs every 20 months). Classicalc calculator's advantage is ratings volume (13 vs 1) and device support (5 vs 3). On ads and in-app purchases 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

Simple Time Converter is free to download; Classicalc calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Simple Time Converter holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Classicalc calculator has 13 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Classicalc calculator ships an update every 20 months, Simple Time Converter every 3 weeks. The most recent releases landed on October 3, 2026 and October 2, 2026 respectively.

Scorecard7 real differences · 3 level
Classicalc calculator versus Simple Time Converter: the parameters behind the verdict, then further details
ParameterClassicalc calculatorSimple Time Converter
Price$0.99Free — better
Rating3.8 (13 ratings)5.0 (1 ratings) — better
Positive reviews62.5% of reviews—
Number of ratings13 — better1
Update frequencyEvery 20 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod, Mac, Apple Watch — betteriPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size14 MB2 MB
Age rating4+4+
DeveloperLukasz KowalskiIrene Ryu

Customer experience

Classicalc calculator

All ratings13 ratings
Positive69.2%
Neutral7.7%
Negative23.1%
Written reviews8 reviews
Positive62.5%
Neutral0.0%
Negative37.5%

Simple Time Converter

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

In-app purchases

None

Classicalc calculator

No in-app purchases

None

Simple Time Converter

No in-app purchases

Questions

Is Classicalc calculator free?
Classicalc calculator costs $0.99, with no in-app purchases.
Is Simple Time Converter free?
Simple Time Converter is free to download, with no in-app purchases.
Which has better reviews, Classicalc calculator or Simple Time Converter?
Simple Time Converter is rated higher. Classicalc calculator averages 3.8 out of 5 from 13 ratings, while Simple Time Converter averages 5.0 from 1 ratings.
Do Classicalc calculator or Simple Time Converter have ads?
Neither Classicalc calculator nor Simple Time Converter shows ads.
Which is updated more often, Classicalc calculator or Simple Time Converter?
Classicalc calculator ships an update every 20 months, and Simple Time Converter every 3 weeks. Most recently, Classicalc calculator was updated on October 3, 2026 and Simple Time Converter on October 2, 2026.

Other comparisons