Big Button Calculator Pro Lite vs X123 Calculator with memory
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Big Button Calculator Pro Lite
A user-friendly calculator app featuring large buttons and customizable colorful backgrounds. It offers a dual-line display, multi-line input for complex equations, and convenient gesture controls for editing and copying.
- Large buttons
- Dual-line display
- 18 color themes
- Multi-line input
- Gesture controls
- VoiceOver accessibility
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This is THE BEST calculator for iOS with big buttons and colorful backgrounds! This version is ad supported. ・Dual-line display - shows the input and result at the same time ・Percentage and backspace button ・18 color themes ・Multi-line input for really long equations ・Automatic scientific formatting ・VoiceOver accessibility ・Split View Gestures ・Swipe left on the display to backspace ・Swipe right on the display to clear ・Tap & hold on the result to copy ・Tap & hold on the input to move the cursor, copy, paste Customize ・Color Theme ・Sound URL Scheme: bigcalculatorpro://
X123 Calculator with memory
This free calculator app offers basic and scientific functions, memory storage, and time calculations. Customize its appearance and layout for enhanced efficiency in everyday tasks and complex computations.
- Basic and scientific calculations
- Value memory function
- Time calculation with NOW key
- Landscape and dark modes
- Dual keyboards in landscape
- Advanced key customization
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Discover X123 your new calculating companion! Free and super-easy to use, X123 is the ideal calculator for your everyday calculations. Customize it the way you like and discover super-practical features to boost your efficiency like value memory, time calculation and landscape mode. BASIC CALCULATIONS With X123, switch easily from addition, to subtraction, multiplication, and division. Perfect for all your everyday needs! SCIENTIFIC CALCULATOR Find your arithmetic, trigonometric, logarithmic and exponential calculation options accessible at your fingertips. MEMORY FUNCTION Keep your favorite results and values at hand and reuse them at any time to simplify your most complex or frequent calculations. TIME CALCULATION Manage your time calculations with simplicity and insert the current time into your calculations with a simple click of the NOW key. FREE CALCULATOR Take unlimited advantage of all X123's calculation options, an entirely free calculator! LANDSCAPE MODE Switch to horizontal mode for enhanced visual and calculating comfort. DARK MODE Switch from light to dark mode in the blink of an eye and adapt your calculator's display to your preferences or ambient lighting. DUAL KEYBOARDS In landscape mode, display two keyboards simultaneously for double the efficiency! Choose from the options: Basic, Memory, Functions, and Time. ADVANCED CUSTOMIZATION Tailor your calculator: rearrange keys, rename them, choose your rounding, select language and writing standard. Make X123 an integral part of your everyday life. X123, your future essential, whether for work or everyday use!
Screenshots
Verdict
The clearest difference is in-app purchases: Big Button Calculator Pro Lite at none against X123 Calculator with memory's 1. Big Button Calculator Pro Lite also leads on ratings volume (14K vs 2). X123 Calculator with memory's advantage is ads (none vs shown) and update cadence (fortnightly vs every 3 months). On price 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
Both are free to download. X123 Calculator with memory sells 1 one-off in-app purchase. Big Button Calculator Pro Lite asks for nothing beyond the download.
X123 Calculator with memory holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Big Button Calculator Pro Lite has 14K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 83% of Big Button Calculator Pro Lite's written reviews are positive against 100% of X123 Calculator with memory's.
Big Button Calculator Pro Lite ships an update every 3 months, X123 Calculator with memory fortnightly. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | Big Button Calculator Pro Lite | X123 Calculator with memory |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (14K ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 82.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 14K — better | 2 |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.2 | 13.4 — better |
| Further details — not scored | ||
| Size | 45 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Cider Software LLC | Botto Ingenierie Informatique |
Customer experience
Big Button Calculator Pro Lite
X123 Calculator with memory
Bugs and requests
Big Button Calculator Pro Lite
Reported bugs
2 issues- Occasionally shows answer before calculation is complete
- Rounding issues leading to inaccurate results
Requested features
4 requests- Add more background options
- Allow custom background uploads
- Add option to change button colors
- Improve ad experience or offer ad-free version
X123 Calculator with memory
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Big Button Calculator Pro Lite
No in-app purchases
X123 Calculator with memory
- Ads removal$3.99
Questions
Is Big Button Calculator Pro Lite free?
Is X123 Calculator with memory free?
Which has better reviews, Big Button Calculator Pro Lite or X123 Calculator with memory?
Do Big Button Calculator Pro Lite or X123 Calculator with memory have ads?
Which is updated more often, Big Button Calculator Pro Lite or X123 Calculator with memory?
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