BIG CALCULATOR. vs Omega Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BIG CALCULATOR.
This utility app offers a straightforward and visually clear calculator experience, ideal for users of all ages. Its large numbers and dark interface enhance readability, while landscape mode support on iPhones and iPads provides added convenience.
- Large numbers for easy viewing
- Simple and easy-to-see interface
- Landscape mode support
- Dark UI for eye comfort
- Suitable for all ages
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A calculator you can actually see — and now hear. Big Calculator does four things — add, subtract, multiply and divide — with keys and digits large enough to read and to hit first time. Nothing else is on the screen. It was built for people who find the calculator that came with their phone too small: for cataracts, glaucoma and macular degeneration, and for anyone whose eyes are simply not what they were. BIG WHERE IT COUNTS • Keys that fill the screen, with room between them • A readout in large, heavy type — no thin, faint numbers • Hide the memory keys and every remaining button grows • Long sums stay readable, grouped the way your country writes them • Portrait or landscape, on iPhone and iPad IT READS THE ANSWER OUT LOUD Turn on VoiceOver and Big Calculator speaks each result the moment it is worked out, so you never have to hunt across the screen for the answer. • Every key says what it is — "Add", "Equals", "Memory add" — not "plus sign" • Divide by zero and it says so, in words • Switch the speaking off in Settings if you would rather it stayed quiet Most calculators leave a blind user to explore the screen and guess. This one tells you. THREE LOOKS — PICK WHAT SUITS YOUR EYES • Warm Paper — dark type on a bright, warm background. Easiest to read for most people. • Night — white on black at high contrast, for eyes that find bright screens painful. • Classic — the original look, with bolder type. The whole app repaints the moment you choose, so you see the difference before you commit. A DESK CALCULATOR ON YOUR PHONE • M+, M− and MRC memory keys, where you expect them • AC clears everything, C clears just the entry • A key press you can hear — or silence it in Settings IN YOUR LANGUAGE, WITH YOUR NUMBERS Available in 23 languages. The decimal point and the thousands separator follow your own country's convention, so the number on screen is written the way you write it — 1,234.56 or 1.234,56 or 1 234,56, whichever is yours. NOTHING ELSE No account. No sign-in. No cloud. Nothing to learn. Your sums stay on your phone. Big Calculator is free, supported by a single banner advert at the bottom of the screen. SUBSCRIPTION Big Calculator Plus — an optional auto-renewing subscription, one year in length. No ads, plus a bigger keypad and display with more room for your calculations. Payment is charged to your Apple Account when you confirm the purchase. It renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your Apple Account settings. The price is shown before you confirm. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://developer-yl.github.io/big-calculator/privacy.html
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.
- Basic and scientific calculation modes
- Intuitive and fluid interface
- High-quality mathematical typesetting
- History tape for saved calculations
- Customizable themes
- Advanced functions (Pro version)
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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.
Screenshots
Verdict
The clearest difference is ads: Omega Calculator at none against BIG CALCULATOR.'s shown. BIG CALCULATOR.'s advantage is review sentiment (100% vs 83%) and update cadence (every 3 weeks vs every 2 months). On price, rating, ratings volume 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. BIG CALCULATOR. sells 1 in-app purchase, starting at $2.99 per year and Omega Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.6 for BIG CALCULATOR. against 4.7 for Omega Calculator. Both are backed by a comparable volume of ratings — 70 and 44 respectively. Written reviews are what separate them: 100% of BIG CALCULATOR.'s written reviews are positive against 83% of Omega Calculator's.
BIG CALCULATOR. ships an update every 3 weeks, Omega Calculator every 2 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.
| Parameter | BIG CALCULATOR. | Omega Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (70 ratings) | 4.7 (44 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 83.3% of reviews |
| Number of ratings | 70 — better | 44 |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 13 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Adysseus | Joseph Rupertus |
Customer experience
BIG CALCULATOR.
Omega Calculator
In-app purchases
BIG CALCULATOR.
- Big Calculator Plus$2.991 Year
Omega Calculator
- Omega Pro$6.99
Questions
Is BIG CALCULATOR. free?
Is Omega Calculator free?
Which has better reviews, BIG CALCULATOR. or Omega Calculator?
Do BIG CALCULATOR. or Omega Calculator have ads?
Which is updated more often, BIG CALCULATOR. or Omega Calculator?
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