Comparison

Calculator· vs Roman Numbers

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

Head to head
About

Calculator·

This app offers a straightforward calculation experience, focusing on essential functions without unnecessary complexity. It includes basic arithmetic, percentage calculations, and advanced functions like square root. Users can customize the appearance with multiple color schemes and utilize features like result copying and split-screen multitasking on iPad.

Highlights
  • Basic arithmetic operations
  • Percentage calculations
  • Multiple color schemes
  • Copy results
  • Square, square root, inverse functions
  • iPad Split View support
  • Apple Watch support
Features
Read full description

A truly no-frills calculator with the perfect blend of features and simplicity. Tired of getting lost in features you don’t use, but wish you had just a few more? Try Calculator· today! Features: • The essentials—add, subtract, multiply, divide, percent • Multiple color schemes • Copy your result (double tap result to copy) • Square, square root, and inverse functions on iPad landscape • Split View for iPad so you can run two apps at once • Apple Watch Support This app contains auto-renewable subscriptions: • Premium Access • 1 month and 1 year durations available​ Limit one free trial per user. Charged through your iTunes account at confirmation of purchase. Your account will be charged within 24-hours prior to the end of the current period. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. You can manage your subscriptions and turn off auto-renewal from your Account Settings in iTunes after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that product, where applicable. • Privacy policy: https://www.iubenda.com/privacy-policy/905866 • Terms of use: http://www.timosstudios.com/terms-of-use You can follow the instructions on our website to change or cancel your subscription: http://www.timosstudios.com/how-to-cancel-subscription-on-ios

About

Roman Numbers

Easily convert between standard numbers and Roman numerals. This utility also includes key historical dates from Ancient Rome.

Highlights
  • Number to Roman numeral conversion
  • Roman numeral to number conversion
  • Ancient Roman historical dates
  • Simple user interface
Features
Read full description

This simple application allows you to convert numeric numbers to and from Roman numerals and contains the main dates of the history of Ancient Rome.

Screenshots

Calculator·4 screens
Roman Numbers4 screens

Verdict

The call

The clearest difference is in-app purchases: Roman Numbers at none against Calculator·'s 3. Roman Numbers also leads on update cadence (every 11 days vs every 3 months) and review sentiment (100% vs 84%). Calculator·'s advantage is ratings volume (34K vs 1). On price, rating, ads 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

Both are free to download. Calculator· sells 3 in-app purchases, starting at $0.99 per month. Roman Numbers asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Calculator· against 5.0 for Roman Numbers. That said, the two scores are not equally well evidenced: Calculator· has 34K ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 84% of Calculator·'s written reviews are positive against 100% of Roman Numbers's.

UpkeepUpdate frequency

Calculator· ships an update every 3 months, Roman Numbers every 11 days. The most recent releases landed on October 28, 2026 and October 20, 2026 respectively.

Scorecard5 real differences · 5 level
Calculator· versus Roman Numbers: the parameters behind the verdict, then further details
ParameterCalculator·Roman Numbers
PriceFreeFree
Rating4.9 (34K ratings)5.0 (1 ratings) — better
Positive reviews84.3% of reviews100.0% of reviews — better
Number of ratings34K — better1
Update frequencyEvery 3 monthsEvery 11 days — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.014.0 — better
Further details — not scored
Size47 MB3 MB
Age rating4+4+
DeveloperTim O's Studios, LLCYurii Sushko

Customer experience

Calculator·

All ratings34,400 ratings
Positive97.2%
Neutral1.8%
Negative0.9%
Written reviews887 reviews
Positive84.3%
Neutral5.6%
Negative10.0%

Roman Numbers

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Calculator·

Reported bugs

3 issues
  • Crashes when performing long calculations
  • Freezes when opening the app
  • Incorrect results for some complex calculations

Requested features

4 requests
  • Add a backspace/undo button
  • Implement a history/memory feature
  • Provide more customization options
  • Reduce frequency of ads

Roman Numbers

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Calculator·

Subscriptions2
  • Upgrade App3 Days trial$0.991 Month
  • Upgrade App$4.991 Year
One-time1
  • Upgrade App$1.99
None

Roman Numbers

No in-app purchases

Questions

Is Calculator· free?
Calculator· is free to download, with in-app purchases available.
Is Roman Numbers free?
Roman Numbers is free to download, with no in-app purchases.
Which has better reviews, Calculator· or Roman Numbers?
Roman Numbers is rated higher. Calculator· averages 4.9 out of 5 from 34K ratings, while Roman Numbers averages 5.0 from 1 ratings.
Do Calculator· or Roman Numbers have ads?
Both Calculator· and Roman Numbers show ads.
Which is updated more often, Calculator· or Roman Numbers?
Calculator· ships an update every 3 months, and Roman Numbers every 11 days. Most recently, Calculator· was updated on October 28, 2026 and Roman Numbers on October 20, 2026.

Other comparisons