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 1.1.4

• Stability improvements.
• Improved dark theming

Ratings and Reviews

5.0 out of 5
8 Ratings

8 Ratings

Tattedhank ,

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.

NEIJim ,

well worth it!

I don’t write many reviews, however this app deserves one! I’m an instructor in an apprenticeship program teaching Ohm’s law basics. I create many homework assignments and tests for my students. This app is well worth the $1.99 for what I needed (fractions, positive and negative super and sub scripts). Took a minute to figure out how to us it but the puzzlement went away when I held a number key instead of just tapping it for the first time. Perfect for my needs. Would recommend to anyone wanting to input scientific equations and characters on an IOS.

Fun Learner ,

Great :), some suggestions

Finally, a super helpful app for my typed chem notes!

I do wish the upper scripts were a bigger font size, such as the negative signs. Otherwise, it’s not super noticeable on my notes even when I’m close. If I skimmed through it, I’d probably miss the negative superscript because it’s so tiny. This is from a Notability typing POV w/ Verdana font style and size 10 for notes. (My headings are size 13 and the negative upper scripts are still too small to be easily noticeable.

Other than that, the keyboard fits the screen and was very easy to figure out. No regrets with my purchase. Please consider my suggestions!! Will fantastically help me :)

Thank you!

Developer Response ,

Thanks for taking the time to review. Unfortunately, do to the way I deal with text, by inserting Unicode characters, character size is entirely up to the font being used by the current app.

App Privacy

The developer, Generally Helpful Software, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

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

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