Comparison

Omega Calculator vs Summa

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

Head to head
About

Omega Calculator

A beautiful and intuitive calculator app for iPhone and iPad, offering both basic arithmetic and advanced scientific functions. It features a smooth, fluid interface with large, colorful buttons and high-quality mathematical typesetting. Results are saved to a history tape and synced across devices, with customizable themes available.

Highlights
  • Basic and scientific calculation modes
  • Intuitive and fluid interface
  • High-quality mathematical typesetting
  • History tape for saved calculations
  • Customizable themes
  • Advanced functions (Pro version)
Features
Read full description

Welcome to Omega Calculator, a beautiful and intuitive calculator for your iPhone and iPad. It’s both familiar and powerful. A full-blown scientific calculator when you need it, and a simple arithmetic device when you don’t. A myriad of capabilities to suit your needs, from trivial computations to advanced mathematical functions. Perfect for students and professionals alike, or anyone in need of a high-quality, visually-pleasing calculator, capable of performing any mathematical task you throw its way. Simplicity meets elegance in the app’s intuitive design. The interface is smooth, fluid, and fun. Buttons are large and colorful, arranged to maximize efficiency and ease of use. The whole expression appears on one line as you input it, and then together with the result when you press enter. Characters are given high-quality mathematical typesetting. You can type in crazy long expressions and it’s a breeze. Results are saved to a history tape for future use, synced to all your devices. And you have the freedom to customize your calculator with different themes. We’re committed to providing an ad-free experience for everyone. No one wants to be interrupted by irrelevant ads while trying to use their calculator. That’s why Omega has no outside advertisements. We also don’t collect any data from users. Your calculations and any other information are kept on your device only. Unlock even more features with Omega Pro. Available as a single in-app purchase. All 30+ themes, an interactive text pointer for editing the input line, and saving and exporting your past calculations. Variables for storing and recalling values, plugging numbers into expressions, graphing functions, and more advanced operations like summation, derivatives, and integrals. It’s time to get the best calculator experience. Download Omega Calculator today.

About

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.

Highlights
  • 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
Features
Read 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

Omega Calculator4 screens
Summa4 screens

Verdict

The call

The clearest difference is in-app purchases: Summa at none against Omega Calculator's 1. Summa also leads on rating (5.0 vs 4.7) and review sentiment (100% vs 83%). Omega Calculator's advantage is ratings volume (44 vs 1) and iOS requirement (15.0 vs 17.0). On price, update cadence, 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. Omega Calculator sells 1 one-off in-app purchase. Summa asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Summa holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Omega Calculator has 44 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 83% of Omega Calculator's written reviews are positive against 100% of Summa's.

UpkeepUpdate frequency

Omega Calculator ships an update every 2 months, Summa every 5 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard6 real differences · 4 level
Omega Calculator versus Summa: the parameters behind the verdict, then further details
ParameterOmega CalculatorSumma
PriceFreeFree
Rating4.7 (44 ratings)5.0 (1 ratings) — better
Positive reviews83.3% of reviews100.0% of reviews — better
Number of ratings44 — better1
Update frequencyEvery 2 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size9 MB24 MB
Age rating4+4+
DeveloperJoseph RupertusVille Scholin

Customer experience

Omega Calculator

All ratings42 ratings
Positive90.5%
Neutral2.4%
Negative7.1%
Written reviews24 reviews
Positive83.3%
Neutral0.0%
Negative16.7%

Summa

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

In-app purchases

1 purchases

Omega Calculator

One-time1
  • Omega Pro$6.99
None

Summa

No in-app purchases

Questions

Is Omega Calculator free?
Omega Calculator is free to download, with in-app purchases available.
Is Summa free?
Summa is free to download, with no in-app purchases.
Which has better reviews, Omega Calculator or Summa?
Summa is rated higher. Omega Calculator averages 4.7 out of 5 from 44 ratings, while Summa averages 5.0 from 1 ratings.
Do Omega Calculator or Summa have ads?
Neither Omega Calculator nor Summa shows ads.
Which is updated more often, Omega Calculator or Summa?
Omega Calculator ships an update every 2 months, and Summa every 5 weeks. Most recently, Omega Calculator was updated on October 24, 2026 and Summa on October 25, 2026.

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