Adam's Calc vs Calculator Plug
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Adam's Calc
A utility calculator that adds memory functionality to standard calculations. Designed to make your device's calculator more helpful by remembering previous results.
- Memory function for calculations
- Enhanced utility calculator
- Intuitive design
- Remembers previous results
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Adam's Calc is a utility calculator designed by rdConcepts. This design is intended to help make the standard calculator more useful by building some "memory" into the device. Inspiration -> Donald Norman.
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.
- 450+ searchable calculators
- Offline functionality
- Clean dark interface
- Construction calculators
- Finance calculators
- Health and fitness calculators
- Trades calculators
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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
Verdict
The clearest difference is ads: Calculator Plug at none against Adam's Calc's shown. Calculator Plug also leads on update cadence (every 4 days vs every 4 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. Adam's Calc sells 1 one-off in-app purchase 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.
On the App Store both sit at effectively the same score — 5.0 for Adam's Calc against 5.0 for Calculator Plug. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
Adam's Calc ships an update every 4 months, Calculator Plug every 4 days. The most recent releases landed on October 9, 2026 and October 14, 2026 respectively.
| Parameter | Adam's Calc | Calculator Plug |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 4 months | Every 4 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 5 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | RD Concepts | Mark Gabrielli |
Customer experience
Adam's Calc
Calculator Plug
In-app purchases
Adam's Calc
- Remove Advertising$2.99
Calculator Plug
- Pro Monthly$5.991 Month
- Pro+ Monthly$9.991 Month
- Pro Lifetime$29.99
- Pro+ Lifetime$44.99
Questions
Is Adam's Calc free?
Is Calculator Plug free?
Which has better reviews, Adam's Calc or Calculator Plug?
Do Adam's Calc or Calculator Plug have ads?
Which is updated more often, Adam's Calc or Calculator Plug?
Other comparisons
