Just a Simple Calculator vs Summa
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Just a Simple Calculator
This app offers a whimsical and stylish approach to basic arithmetic. It goes beyond simple calculations with delightful animations and customizable covers, making math tasks more engaging and elegant.
- Basic arithmetic operations
- Delightful animations
- User-friendly interface
- Customizable calculator covers
- Elegant color palette
Read full descriptionHide full description
Introducing "Just a Simple Calculator" – a whimsical marvel of modern technology that goes above and beyond the mere notion of arithmetic. This isn't your run-of-the-mill calculator; it's a veritable mathematical maestro, a digital dandy among number-crunching tools. Picture a calculator, but imagine it wearing a top hat, monocle, and a monocle-wearing top hat! This app isn't satisfied with just being a "Simple Calculator." It's got aspirations of grandeur, dreams of mathematical mastery, and a taste for the finer digits in life. Our app doesn't just add, subtract, multiply, and divide – it choreographs mathematical ballets! It doesn't merely solve equations; it composes symphonies of numbers. And as for percentages, well, it calculates them with a flair that would make even the most prestigious mathematicians blush. But that's not all! The app is designed with a user-friendly interface that's so easy to navigate, even a tech-challenged cat could use it (well, almost). With a regal color palette, delightful animations, and the option to customize your own virtual calculator cover, you can now calculate with style, elegance, and a dash of humor. So, whether you're balancing your checkbook, splitting the restaurant bill, or solving complex equations worthy of a Nobel Prize, why settle for a mundane calculator when you can embrace the quirky charm of "Just a Simple Calculator"? Download it today and watch your mathematical musings take on a life of their own, all while adding a touch of fanciness to your life's calculations!
Summa
A clean, fast, and beautifully designed calculator for everyday math, scientific calculations, and quick conversions. Features live preview, history, favorites, and smart gestures for effortless and accurate calculations.
- Live preview of results
- History and Favorites for calculations
- Scientific functions (exponents, roots, trig)
- Built-in unit and currency converter
- Smart gestures for interaction
- Multiple themes and icon options
Read full descriptionHide full description
Summa - Precision Made Simple is a clean, fast, and beautifully designed calculator for iPhone and iPad. Built for everyday math, scientific calculations, quick conversions, and everything in between, Summa makes calculating effortless, accurate, and genuinely enjoyable. With live preview, a fast history bar, and natural gestures, Summa helps you move quickly without losing context. Results appear as you type, past calculations stay within reach, and Favorites make it easy to save the numbers you return to most. Powerful features, simply presented: - Live preview - see results instantly as you type - History and Favorites - revisit, reuse, and save important calculations - Exponents and roots - x^2, x^y, square root, and y-th root - Trigonometry - sin, cos, tan, and inverse arc functions - Degree and radian support - easily switch between DEG and RAD - Mathematical constants - π and e - Logarithmic functions - ln for natural logarithms - Smart gestures - swipe, tap, and interact naturally A calculator with a capable converter: Summa includes built-in conversions for money, temperature, length, weight, volume, energy, area, and data size. Convert currencies by name or country, work with fiat and crypto rates, or quickly switch between everyday units without leaving the app. For market data, Summa offers flexible refresh behavior with adjustable fiat and crypto cache timing. Relay mode can route fiat and crypto market refreshes through Studio Elytra15’s cache for a more private path. Designed to feel personal: - Multiple themes, including light, dark, and crafted color themes - Alternate Home Screen icons - A calm, polished interface for iPhone and iPad - Completely free - no ads, no in-app purchases, and no tracking Whether you’re at home, at work, in class, or on the go, Summa is your reliable, elegant calculator companion. Precise math, beautifully simple.
Screenshots
Verdict
The clearest difference is update cadence: Summa at every 5 weeks against Just a Simple Calculator's every 5 months. Just a Simple Calculator's advantage is ratings volume (5 vs 1) and iOS requirement (13.0 vs 17.0). On price, rating, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Just a Simple Calculator against 5.0 for Summa. That said, the two scores are not equally well evidenced: Just a Simple Calculator has 5 ratings behind it against 1, so its average is the more settled of the two.
Just a Simple Calculator ships an update every 5 months, Summa every 5 weeks. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.
| Parameter | Just a Simple Calculator | Summa |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) | 5.0 (1 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 5 — better | 1 |
| Update frequency | Every 5 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 24 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Onur Hazar | Ville Scholin |
Customer experience
Just a Simple Calculator
Summa
In-app purchases
Just a Simple Calculator
No in-app purchases
Summa
No in-app purchases
Questions
Is Just a Simple Calculator free?
Is Summa free?
Which has better reviews, Just a Simple Calculator or Summa?
Do Just a Simple Calculator or Summa have ads?
Which is updated more often, Just a Simple Calculator or Summa?
Other comparisons















