Comparison

Calculator· vs Big Button Calculator Pro Lite

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

Head to head
About

Calculator·

This app offers a straightforward calculation experience, focusing on essential functions without unnecessary complexity. It includes basic arithmetic, percentage calculations, and advanced functions like square root. Users can customize the appearance with multiple color schemes and utilize features like result copying and split-screen multitasking on iPad.

Highlights
  • Basic arithmetic operations
  • Percentage calculations
  • Multiple color schemes
  • Copy results
  • Square, square root, inverse functions
  • iPad Split View support
  • Apple Watch support
Features
Read full description

A truly no-frills calculator with the perfect blend of features and simplicity. Tired of getting lost in features you don’t use, but wish you had just a few more? Try Calculator· today! Features: • The essentials—add, subtract, multiply, divide, percent • Multiple color schemes • Copy your result (double tap result to copy) • Square, square root, and inverse functions on iPad landscape • Split View for iPad so you can run two apps at once • Apple Watch Support This app contains auto-renewable subscriptions: • Premium Access • 1 month and 1 year durations available​ Limit one free trial per user. Charged through your iTunes account at confirmation of purchase. Your account will be charged within 24-hours prior to the end of the current period. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. You can manage your subscriptions and turn off auto-renewal from your Account Settings in iTunes after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that product, where applicable. • Privacy policy: https://www.iubenda.com/privacy-policy/905866 • Terms of use: http://www.timosstudios.com/terms-of-use You can follow the instructions on our website to change or cancel your subscription: http://www.timosstudios.com/how-to-cancel-subscription-on-ios

About

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.

Highlights
  • Large buttons
  • Dual-line display
  • 18 color themes
  • Multi-line input
  • Gesture controls
  • VoiceOver accessibility
Features
Read full description

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://

Screenshots

Calculator·4 screens
Big Button Calculator Pro Lite4 screens

Verdict

The call

The clearest difference is in-app purchases: Big Button Calculator Pro Lite at none against Calculator·'s 3. Calculator·'s advantage is rating (4.9 vs 4.7) and iOS requirement (12.0 vs 15.2). On price, review sentiment, ratings volume and update cadence 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. Calculator· sells 3 in-app purchases, starting at $0.99 per month. Big Button Calculator Pro Lite asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Calculator· holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 34K and 14K respectively. Written reviews point the same way: 84% of Calculator·'s written reviews are positive against 83% of Big Button Calculator Pro Lite's.

UpkeepUpdate frequency

Calculator· ships an update every 2 months, Big Button Calculator Pro Lite every 3 months. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.

Scorecard4 real differences · 6 level
Calculator· versus Big Button Calculator Pro Lite: the parameters behind the verdict, then further details
ParameterCalculator·Big Button Calculator Pro Lite
PriceFreeFree
Rating4.9 (34K ratings) — better4.7 (14K ratings)
Positive reviews84.4% of reviews — better83.1% of reviews
Number of ratings34K — better14K
Update frequencyEvery 2 months — betterEvery 3 months
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS12.0 — better15.2
Further details — not scored
Size40 MB45 MB
Age rating4+4+
DeveloperTim O's Studios, LLCCider Software LLC

Customer experience

Calculator·

All ratings34,361 ratings
Positive97.2%
Neutral1.8%
Negative0.9%
Written reviews885 reviews
Positive84.4%
Neutral5.5%
Negative10.1%

Big Button Calculator Pro Lite

All ratings13,954 ratings
Positive93.1%
Neutral3.3%
Negative3.6%
Written reviews366 reviews
Positive83.1%
Neutral6.8%
Negative10.1%

User reviews

Calculator·

From 34K App Store ratings

What we love

  • 👍 Simple and easy to use
  • 🚀 Quick and responsive
  • 💡 Percentage function works well
  • 👍 Large, clear buttons
  • 👍 Straightforward, no-frills design

Room to improve

  • 🔋 Frequent ads can be distracting
  • 🐛 Occasional crashes or freezes
  • 🔒 Lack of customization options
  • 💡 No backspace/undo function
  • 💡 Missing advanced features like memory

Big Button Calculator Pro Lite

From 14K App Store ratings

What we love

  • 👍 Easy to use
  • 💡 Customizable backgrounds
  • 🚀 Accurate calculations
  • 👍 Large, clear numbers
  • 👍 Helpful for homeschooling

Room to improve

  • 🐛 Ads can be intrusive
  • 🐛 Ads in foreign languages
  • 🐛 Ads take time to close
  • 🔋 High battery consumption due to ads

Bugs and requests

Calculator·

Reported bugs

3 issues
  • Crashes when performing long calculations
  • Freezes when opening the app
  • Incorrect results for some complex calculations

Requested features

4 requests
  • Add a backspace/undo button
  • Implement a history/memory feature
  • Provide more customization options
  • Reduce frequency of ads

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

In-app purchases

3 purchases

Calculator·

Subscriptions2
  • Upgrade App3 Days trial$0.991 Month
  • Upgrade App$4.991 Year
One-time1
  • Upgrade App$1.99
None

Big Button Calculator Pro Lite

No in-app purchases

Questions

Is Calculator· free?
Calculator· is free to download, with in-app purchases available.
Is Big Button Calculator Pro Lite free?
Big Button Calculator Pro Lite is free to download, with no in-app purchases.
Which has better reviews, Calculator· or Big Button Calculator Pro Lite?
Calculator· is rated higher. Calculator· averages 4.9 out of 5 from 34K ratings, while Big Button Calculator Pro Lite averages 4.7 from 14K ratings.
Do Calculator· or Big Button Calculator Pro Lite have ads?
Both Calculator· and Big Button Calculator Pro Lite show ads.
Which is updated more often, Calculator· or Big Button Calculator Pro Lite?
Calculator· ships an update every 2 months, and Big Button Calculator Pro Lite every 3 months. Most recently, Calculator· was updated on September 24, 2026 and Big Button Calculator Pro Lite on September 23, 2026.

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