Comparison

Simple Calculator vs Calculator Plug

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

Head to head
About

Simple Calculator

Features
Read full description

A calculator designed for everyday use — simple, fast, and reliable. No distractions. Just the calculations you need. Practical Calculator focuses on what really matters in daily situations like shopping. By eliminating unnecessary features, it ensures a smooth and error-free experience every time you use it. Key Features - Minimal and focused Only essential functions are included. No clutter, no confusion. - No accidental mode switching It will never turn into a scientific calculator or change behavior unexpectedly. You always get the same, predictable experience. - Built-in calculation history Displays the last 5 calculations (expressions and results). No need for memory buttons or extra steps to keep track of results. - Intuitive interface Clean and easy to use for anyone, right away. Perfect for - Quick calculations while shopping - Users who want simplicity over complexity - Anyone tired of overcomplicated calculator apps

About

Calculator Plug

Access over 450 specialized calculators for construction, finance, health, trades, and more. This app offers a clean, offline-capable interface for quick, accurate calculations without intrusive ads.

Highlights
  • 450+ searchable calculators
  • Offline functionality
  • Clean dark interface
  • Construction calculators
  • Finance calculators
  • Health and fitness calculators
  • Trades calculators
Features
Read full description

Calculator Plug puts 450+ real-world calculators in one fast, clean app - built for people who need a real answer, not a search engine full of pop-ups. CATEGORIES - Construction and home: concrete, drywall, flooring, roofing, framing, square footage - Finance and money: mortgage, loan, refinance, compound interest, ROI, retirement - Health and fitness: BMI, calories, macros, body fat, heart rate, pace - Math and science: algebra, geometry, statistics, chemistry, physics - Trades: electrical, plumbing, HVAC, welding, structural engineering - Trading and investing: position size, pip value, cost basis, capital gains - Conversions, automotive, business, date and time, and more - Field pack: local weather, tides, sunrise/sunset and moon times FEATURES - 450+ calculators, searchable in a tap - Works offline (except live weather and tides) - Pro unlocks every calculator; Pro+ adds the professional suite - Clean dark interface, no clutter Free to use with a core set. Pro and Pro+ unlock the full library. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Simple Calculator4 screens
Calculator Plug4 screens

Verdict

The call

The clearest difference is ads: Calculator Plug at none against Simple Calculator's shown. Calculator Plug also leads on update cadence (every 4 days vs every 3 weeks). On price, in-app purchases, device support and iOS requirement 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. Simple Calculator sells 2 one-off in-app purchases and Calculator Plug sells 4 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Simple Calculator ships an update every 3 weeks, Calculator Plug every 4 days. The most recent releases landed on September 20, 2026 and September 29, 2026 respectively.

Scorecard2 real differences · 7 level
Simple Calculator versus Calculator Plug: the parameters behind the verdict, then further details
ParameterSimple CalculatorCalculator Plug
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 weeksEvery 4 days — better
AdsYesNo — better
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size9 MB34 MB
Age rating4+4+
DeveloperTakao IchimuraMark Gabrielli

In-app purchases

2 purchases

Simple Calculator

One-time2
  • Remove Ads$1.99
  • Remove Ads + Support$2.99
4 purchases

Calculator Plug

Subscriptions2
  • Pro Monthly$5.991 Month
  • Pro+ Monthly$9.991 Month
One-time2
  • Pro Lifetime$29.99
  • Pro+ Lifetime$44.99

Questions

Is Simple Calculator free?
Simple Calculator is free to download, with in-app purchases available.
Is Calculator Plug free?
Calculator Plug is free to download, with in-app purchases available.
Do Simple Calculator or Calculator Plug have ads?
Simple Calculator shows ads; Calculator Plug does not.
Which is updated more often, Simple Calculator or Calculator Plug?
Simple Calculator ships an update every 3 weeks, and Calculator Plug every 4 days. Most recently, Simple Calculator was updated on September 20, 2026 and Calculator Plug on September 29, 2026.

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