Octuple Calc vs Calculator Plug
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Octuple Calc
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Display eight calculators and perform calculations with each one.
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 in-app purchases: Octuple Calc at none against Calculator Plug's 4. Calculator Plug's advantage is ads (none vs shown) and update cadence (every 4 days vs every 2 weeks). On price, 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
Both are free to download. Calculator Plug sells 4 in-app purchases, starting at $5.99 per month. Octuple Calc asks for nothing beyond the download.
Octuple Calc ships an update every 2 weeks, Calculator Plug every 4 days. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.
| Parameter | Octuple Calc | Calculator Plug |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 weeks | Every 4 days — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.8.3 | 15.1 — better |
| Further details — not scored | ||
| Size | 36 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | Hideaki Uchikoshi | Mark Gabrielli |
In-app purchases
Octuple Calc
No in-app purchases
Calculator Plug
- Pro Monthly$5.991 Month
- Pro+ Monthly$9.991 Month
- Pro Lifetime$29.99
- Pro+ Lifetime$44.99
Questions
Is Octuple Calc free?
Is Calculator Plug free?
Do Octuple Calc or Calculator Plug have ads?
Which is updated more often, Octuple Calc or Calculator Plug?
Other comparisons
