Best Geothermal Calculator Apps

248+ iOS apps curated and reviewed

4.2 avg rating
20 free apps
Updated November 2026

The best geothermal calculator apps on iPhone average 4.2★ across 248+ titles — we've ranked them by what real users actually keep on their phones. Updated November 2026.

Compare top Geothermal Calculator Apps (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Calculator‰Calculator‰Free4.9★ (410K)YesNoNov 2026
2ON Geothermal ExhibitionON Geothermal ExhibitionFree4.6★ (9)NoNoOct 2026
3Calculator for iPad!Calculator for iPad!Free4.7★ (61K)NoNoNov 2026
4Calculator--Calculator--Free4.7★ (916)YesNoOct 2026
5Calculator⁻Calculator⁻Free4.4★ (3.6K)YesNoNov 2026
6Calculator·Calculator·Free4.9★ (34K)YesYesNov 2026
7Calculator%.Calculator%.Free4.4★ (4.2K)YesNoNov 2026
8CalculatorCalculatorFree4.5★ (147K)YesYesNov 2026

Top Picks for Geothermal Calculator

Calculator‰#1

Calculator‰ by Tim O's Studios, LLC

Default Calculator
Editor's Choice
🔧 Utilities
4.9😊(410K ratings)
FreeAds
Calculator‰ screenshot 1
Calculator‰ screenshot 2

This utility app offers a clean and intuitive interface for performing calculations. It prioritizes a user-friendly design with large buttons and a clear display for quick and efficient use.

What We Love

  • 👍 Easy to use
  • 👍 Large, clear buttons
  • 👍 Accurate calculations
  • 👍 Simple, no-frills design
  • 👍 Reliable and stable
  • 👍 Helpful for visual impairments

Room to Improve

  • 🔍 Lack of advanced features
  • 💰 Ads can be intrusive
  • 🔒 Concerns about security/malware
  • 🐛 Occasional bugs and glitches
4.6(9 ratings)
Free
ON Geothermal Exhibition screenshot 1
ON Geothermal Exhibition screenshot 2
ON Geothermal Exhibition screenshot 3
ON Geothermal Exhibition screenshot 4

This audio guide app leads you through an exhibition about geothermal energy. Navigate the exhibition using an interactive map and listen to audio stops that correspond to your location. Explore Iceland's geothermal sector through displays, interactive exhibits, and videos.

Calculator for iPad!#3

Calculator for iPad! by 7th Gear

Basic & Scientific Calculator
Worth Considering
🔧 Utilities
4.7😊(61K ratings)
Free
Calculator for iPad! screenshot 1
Calculator for iPad! screenshot 2
Calculator for iPad! screenshot 3
Calculator for iPad! screenshot 4

This app offers both basic and scientific calculation modes with over 30 scientific operations. It allows for customization of the app's appearance and includes features for note-taking, drawing, and viewing calculation history. It supports high accuracy calculations and nested parentheses.

What We Love

  • 📐 Versatile calculator with basic and scientific modes
  • 📝 Useful note-taking and calculation history features
  • 🎨 Customizable color schemes
  • 💻 Works well on both iPad and iPhone
  • 👍 Easy to use and intuitive interface

Room to Improve

  • 💰 Ads can be intrusive in free version
  • 🔒 Lack of transparency around in-app purchases
  • 🔍 Difficulty finding and accessing premium features
  • 🖥️ Layout issues in split-screen mode
  • 🔢 Inconsistent button placement between portrait and landscape

More Geothermal Calculator apps to explore

FAQ about Geothermal Calculator

What are the best geothermal calculator apps for iPhone?
Calculator‰ tops our geothermal calculator apps ranking as of November 2026, with a 4.9-star average from 410K App Store ratings, and it's free to download.
Yes — 20 of the top geothermal calculator apps we rank are free to download, including Calculator‰ and ON Geothermal Exhibition.
Calculator‰ shows ads and has no in-app purchases, according to its App Store listing as of November 2026.
We track 248+ geothermal calculator apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.