Comparison

Calculator Plus Basic & PEMDAS vs Keyboard Theme

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

Head to head
About

Calculator Plus Basic & PEMDAS

This app offers a customizable calculator experience with a clean interface and advanced features like PEMDAS mode and calculation history. Personalize its appearance with numerous themes and button styles to suit your preferences.

Highlights
  • PEMDAS order of operations mode
  • Over 50 customizable color themes
  • Full calculation history
  • Adjustable decimal precision
  • Copy and paste functionality
  • Sales tax calculations
Features
Read full description

Combining powerful calculations with fully customisable design — so your calculator looks and works just how you want it to! Built For Speed & Simplicity: Clean, simple, intuitive layout Instant, responsive calculations Large easy to read buttons and numbers Switch between standard and order of operations (PEMDAS) modes effortlessly Make It Yours: Over 50 color themes available, with more added regularly High-contrast colour themes for visually impaired users Favorite your top themes for quick switching Request your very own color theme Choose round or square buttons Smart Features That Matter: Full calculation history with US format date & timestamps - store up to a year of results Adjustable decimal precision Copy & paste from the display or calculation history Retro LCD or modern display Customisable haptic feedback intensity Sound effects on or off Optimized layouts for both iPhone and iPad Sales Tax calculations Currency conversions Speaking calculations Tips calculator Unit price calculator Premium: Upgrade to Premium with a one-time purchase and: Unlock all Premium color themes and features forever on your iPhone and iPad No subscription Reasons to Love it: No clutter, no confusion — just an intuitive, great looking calculator Personalisation without limits Try Premium for 2 full weeks before you buy

About

Keyboard Theme

Features
Read full description

Keyboard Themes lets you personalize your keyboard with a clean custom design, multiple languages, emoji shortcuts, and shared settings between the app and keyboard extension. Create a keyboard that fits your style: Choose your active languages, set the default language, customize key colors, adjust the background, and make typing feel more personal on iPhone and iPad. Features: Multiple keyboard languages with quick switching Custom keyboard colors and theme styling Optional keyboard background image Emoji keyboard with recent emoji history Adjustable recent emoji limit Key tap haptics toggle Key tap sound toggle Shared settings between app and keyboard extension Support for iPhone and iPad Use the app to configure your keyboard, then enable the keyboard in iOS Settings to start typing with your custom setup. Some shared features, such as synced theme settings and emoji recents, may require Full Access for the keyboard extension. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Calculator Plus Basic & PEMDAS4 screens
Keyboard Theme4 screens

Verdict

The call

The clearest difference is ads: Keyboard Theme at none against Calculator Plus Basic & PEMDAS's shown. On price, update cadence, in-app purchases 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. Calculator Plus Basic & PEMDAS sells 1 one-off in-app purchase and Keyboard Theme sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Calculator Plus Basic & PEMDAS ships an update every 3 days, Keyboard Theme every 2 days. The most recent releases landed on September 14, 2026 and September 13, 2026 respectively.

Scorecard1 real difference · 9 level
Calculator Plus Basic & PEMDAS versus Keyboard Theme: the parameters behind the verdict, then further details
ParameterCalculator Plus Basic & PEMDASKeyboard Theme
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 daysEvery 2 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size85 MB7 MB
Age rating4+4+
DeveloperPaul FlowersSandro Janjghava

In-app purchases

1 purchases

Calculator Plus Basic & PEMDAS

One-time1
  • More Beans Calculator$4.99
2 purchases

Keyboard Theme

Subscriptions1
  • Weekly Subscription$3.991 Month
One-time1
  • One Time Purchase$12.99

Questions

Is Calculator Plus Basic & PEMDAS free?
Calculator Plus Basic & PEMDAS is free to download, with in-app purchases available.
Is Keyboard Theme free?
Keyboard Theme is free to download, with in-app purchases available.
Do Calculator Plus Basic & PEMDAS or Keyboard Theme have ads?
Calculator Plus Basic & PEMDAS shows ads; Keyboard Theme does not.
Which is updated more often, Calculator Plus Basic & PEMDAS or Keyboard Theme?
Calculator Plus Basic & PEMDAS ships an update every 3 days, and Keyboard Theme every 2 days. Most recently, Calculator Plus Basic & PEMDAS was updated on September 14, 2026 and Keyboard Theme on September 13, 2026.

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