The Chemistry Keyboard is a specialized Keyboard Extension for anyone who needs to enter chemical formulae. Ever need to input Hg²⁺+2 I⁻ on your phone and can't figure out how to get those nice superscript or subscript 2s. Or a proper arrow glyph?

Well, your wait is over.

Quickly generate
superscripts: ⁰ ¹ ² ³ ⁴ ⁵ ⁶ ⁷ ⁸ ⁹ ⁽ ⁾ ⁺ ⁻,
subscripts: ₀ ₁ ₂ ₃ ₄ ₅ ₆ ₇ ₈ ₉ ₍ ₎ ₊ ₋,
and arrows.

lowercase Greek characters available in landscape mode.
and other chemistry related Unicode characters.

The app itself demonstrates the keyboard's use by allowing text entry and looking up data from Wikipedia.

Unlike many keyboard extensions, this keyboard does not require network access. It's entirely self contained.

What's New

Version 1.1.1

• Switch keyboard button was missing on certain devices at certain times.

Ratings and Reviews

Great app and very helpful in class


When I first got this app last week I was having trouble getting the keyboard to load if I was in landscape mode on my 12.9" iPad Pro. I wrote a review and a few days later the developer contacted me saying he was working on a fix. A couple of days later he contacted me to tell me he submitted the revision. I re-downloaded the app and it works perfectly! I was very impressed by the quick response and how quickly he fixed the issue! I used the app in class today and it was great! No having to re-format my chemical equations when I get home! You can quickly superscript and subscript all numbers with the flick of the's great!

Developer Response

Thanks for reporting this issue. I hope to get an update out as soon as I can figure out what is wrong on the 12.9.

Great tool


This is a great keyboard for typing up scientific papers and other science related things. Once you get used it the keyboard is really effective at helping you type chemical equations and sub/super scripts.



This keyboard is good, however it is missing some very important features, it being a chemistry keyboard after all.

Developer Response

Hi, I would love to hear of any improvements you could suggest. Be warned, that I'm limited to Unicode in terms of what characters I can generate.



Generally Helpful Software
10.1 MB
Requires iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Arabic, Bengali, Bulgarian, Catalan, Cherokee, Croatian, Czech, Danish, Dutch, Estonian, Finnish, French, Georgian, German, Greek, Gujarati, Hawaiian, Hebrew, Hindi, Hungarian, Icelandic, Indonesian, Irish, Italian, Japanese, Korean, Latvian, Lithuanian, Macedonian, Malay, Norwegian Bokmål, Persian, Polish, Portuguese, Romanian, Russian, Serbian, Simplified Chinese, Slovak, Slovenian, Spanish, Swedish, Tamil, Thai, Tibetan, Turkish, Ukrainian, Urdu, Vietnamese, Welsh
Age Rating
Rated 4+
© (c) 2014-2017 Generally Helpful Software


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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