Calculator⁼ vs Roman Numbers
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator⁼
This app offers a clean and intuitive interface for both basic arithmetic and advanced scientific calculations. It includes a history tape to review past computations and supports various mathematical operations, making it suitable for everyday use and complex problem-solving.
- Basic & Scientific Calculator
- Live Currency Converter
- History Tape
- Equation Edit Function
- Degrees or Radians Calculation
- Memory Banks
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Calculator is a clean, easy-to-use calculator app for everyday math and more. It handles basic calculations and scientific functions when you need them and keeps a history of your past results so you can quickly go back and check or reuse them. With its classic design, it feels familiar and straightforward—perfect for quick sums at work, school, or home. AVAILABLE FOR FREE • Basic & Scientific Calculator • Great Visibility; Big buttons for easy calculations • Live Currency Converter; get exchange rate prices • History Tape; Track all calculations, taxes, and expenses • Equation edit function • Calculate with Degrees or Radians • Memory Banks • Choose your Decimal Notation • Set the Number of Decimals • Available in 12 languages • Made for iPad & iPhone • Support Split View & Dark Mode BASIC AND SCIENTIFIC Rotate your device to access all scientific buttons. Or if you prefer calculating in portrait mode, simply swipe left. YOUR EXPERIENCE IS IMPORTANT TO US! As your experience is important to us, we’re happy with your feedback, questions, and suggestions. Please share any support as our team is always ready to help via support@impalastudios.com Mathematical Operations Addition, Subtraction, Division, Multiplication, Percentages, Square, Cubic Exponent, Nth Exponent, Square Root, Cubic Root, Nth Root, Engineering Exponent, Factorial, Power of Two, Power of Ten, Power of E, Natural Logarithm, Common Logarithm, Binary Logarithm, Sine, Cosine, Tangent, Arc Sine, Arc Cosine, Arc Tangent, Hyperbolic Sine, Hyperbolic Cosine, Hyperbolic Tangent, Hyperbolic ArcSine, Hyperbolic Arc Cosine, Hyperbolic ArcTangent, Multiplicative Inverse, Random Number Input LOVING CALCULATOR? Please show your support by rating us! Thank you. Calculator (C) 2011 Impala Studios Terms & Conditions: https://impalastudios.com/terms Privacy Policy: https://impalastudios.com/privacy
Roman Numbers
Easily convert between standard numbers and Roman numerals. This utility also includes key historical dates from Ancient Rome.
- Number to Roman numeral conversion
- Roman numeral to number conversion
- Ancient Roman historical dates
- Simple user interface
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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
Verdict
The clearest difference is review sentiment: Roman Numbers at 100% against Calculator⁼'s 36%. Roman Numbers also leads on in-app purchases (none vs 8) and rating (5.0 vs 4.6). Calculator⁼'s advantage is ratings volume (359K vs 1). On price, ads, device support and iOS requirement 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
Both are free to download. Calculator⁼ sells 8 in-app purchases, starting at $0.49 per 7 days. Roman Numbers asks for nothing beyond the download.
Roman Numbers holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Calculator⁼ has 359K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 36% of Calculator⁼'s written reviews are positive against 100% of Roman Numbers's.
Calculator⁼ ships an update monthly, Roman Numbers every 11 days. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.
| Parameter | Calculator⁼ | Roman Numbers |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (359K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 35.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 359K — better | 1 |
| Update frequency | Monthly | Every 11 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 159 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Impala Studios | Yurii Sushko |
Customer experience
Calculator⁼
Roman Numbers
Bugs and requests
Calculator⁼
Reported bugs
3 issues- History not always showing all entries
- Ads covering up parts of the screen
- Inability to close full-screen ads
Requested features
4 requests- Add fraction button
- Option to clear calculation history
- Ability to copy/paste results
- Customizable layout and themes
Roman Numbers
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Calculator⁼
- Weekly Premium Access3 Days trial$0.497 Days
- Monthly full access3 Days trial$1.991 Month
- Weekly Premium Access3 Days trial$1.997 Days
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- Limited Time Offer$4.991 Year
- Premium Yearly3 Days trial$5.991 Year
- Annual Premium Access$9.991 Year
- Retro Theme Calculator'$0.99
- Lifetime Full Access$14.99
Roman Numbers
No in-app purchases
Questions
Is Calculator⁼ free?
Is Roman Numbers free?
Which has better reviews, Calculator⁼ or Roman Numbers?
Do Calculator⁼ or Roman Numbers have ads?
Which is updated more often, Calculator⁼ or Roman Numbers?
Other comparisons
