Best apps like Oxygen Smarty

9+ similar apps compared and reviewed

4.7 avg rating
7 free apps
Updated September 2026

Whether you want more options like Oxygen Smarty or a completely different take on the same concept, our curated list of 9+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.

Top Alternatives to Oxygen Smarty

Calc Pro HD - Top Calculator!#3

Calc Pro HD - Top Calculator! by Panoramic Software Inc.

10 Powerful Calculators
Worth Considering
🔧 Utilities
4.7😊(283 ratings)
$7.99
Calc Pro HD - Top Calculator! screenshot 1
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Calc Pro HD - Top Calculator! screenshot 4
Calc Pro HD - Top Calculator! screenshot 5

This app offers a comprehensive suite of 10 powerful calculators, including standard, scientific, graphing, and financial tools. It provides over 3000 unit conversions and daily currency updates, making it suitable for students and professionals alike for everyday calculations and complex financial tasks.

What We Love

  • 🚀 Best Calc App Ever!
  • 👍 Excellent and versatile
  • 👍 Extremely useful
  • 👍 Fantastic app
  • 👍 Great calculator with no subscriptions
  • 👍 Easily the best
  • 👍 Excellent app
  • 👍 Awesome do-it-all calculator
  • 👍 Solid and reliable
  • 👍 Brilliant value for money
  • 👍 Fantastic calculator

Room to Improve

  • 🐛 Stopped working/redownloaded/demands payment again
  • 🐛 now just crashes on both ipad and iphone hasn't been updated in years
  • 🐛 Broken with iPadOS 14.2
  • 🐛 Tape not working
  • 🐛 Decimals Won't Even Work