# Chemistry Keyboard — Subscript, Superscript, Arrows

> Specialized keyboard for chemical formulas with superscripts, subscripts, and arrows. (iPhone/iPad app by Generally Helpful Software.)

- Source: https://appshunter.io/ios/app/chemistry-keyboard/id914964478 (this page in markdown: same URL + `.md`)
- Developer: [Generally Helpful Software](https://appshunter.io/developer/286015711)
- Category: Utilities, Reference
- Price: $1.99
- Rating: 4.70/5 from 16 App Store ratings · 23 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 9 MB
- Languages: American English
- Released: 2014-11-03
- Data updated: 2026-08-21
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/chemistry-keyboard/id914964478/reviews.md

## What is Chemistry Keyboard?

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 proper arrow glyphs?

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.

## Key features

- Superscript characters
- Subscript characters
- Arrow glyphs
- Lowercase Greek characters
- Chemistry Unicode characters
- Offline functionality
- Wikipedia data lookup demo

## Chart rankings

- #190 in Top Paid · Utilities (US App Store)

## Recent user reviews (10 of 23)

All indexed reviews: https://appshunter.io/ios/app/chemistry-keyboard/id914964478/reviews.md

### 2/5 — Not working in other apps

*2025-12-19*

I bought this app to be able to write all the formulas in my chemistry notes but i have the settings turned on and i added it to my keyboards but for some reason im unable to use the keyboard in any app so i have to keep opening up the app and typing out what i need and then copy paste it into my notes :/

### 5/5 — very good and some question

*2025-12-06*

This chemistry keyboard app is user-friendly, but it’s missing key chemical symbols. I hope all standard chemical notations (like ↑, ↓, ) can be added in future updates. It would be much more useful then!

### 5/5 — so useful for digital notes

*2025-11-10*

i study biochemistry and this genuinely saves me so much time. i hate writing out equations manually or having to google sub and superscript to paste into my notes, this keyboard has changed the game for me!!! i love being able to do my notes on my ipad rather than laptop, not only is this saving time but also saving my shoulder from having to carry around a laptop all day!!

**Developer response:** Thank you so much for the kind review. It made my day. ∞

### 2/5 — Does not allow custom subscript or superscript lettering not preset

*2023-08-27*

This app does not allow for superscript or subscript lettering that has not been predefined. Possibly useful for chemistry only representations.

**Developer response:** It is limited to Unicode subscripts and superscript. If you can find one that is useful, I’d consider adding it. 

—glenn

### 4/5 — Very Except …,

*2023-05-07*

Why isn’t the symbol for Fluorine (F)
either on the keyboard or in one of the two lists of elements below the keyboard??
I know fluorine is just one letter - but you have the others either on the keyboard or beneath it.  The alphabetical list with the “F” elements has Fe and others - but alas no F.

**Developer response:** I put all the halogens under the Cl button.  I tried to make elements accessible in order of (in my mind) their likelihood of appearing in a formula. So carbon, oxygen and hydrogen get their own buttons. Chlorine, fluorine, bromine and iodine are under one button. While sulfur, boron, nitrogen and phosphorus are under one buttons. All the other elements are placed in the two big lists. 

I hope this makes it fast for most people, but obviously if you have to type Hg a lot it will be non-optimal.

### 5/5 — Seamless

*2023-04-21*

Once I installed the app and reset my phone (I read a previous review that said resetting could fix they keyboard not showing up in certain apps, and it works) this app works well and makes it easy to find each element while typing. I haven’t had any issues with the keyboard loading slowly like it does with other apps. Great deal!

### 5/5 — Good app

*2022-09-06*

This is a good app, well priced for what it is, I find it very helpful in conveying math and chemistry equations, however one suggestion I would have would be the addition of super/sub script signs such as →

### 5/5 — Very nice

*2022-01-22*

Great little app that respects privacy and actually follows through on its functionality.

### 5/5 — Great :), some suggestions

*2020-05-26*

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.

### 5/5 — Great app. Just make sure to restart phone

*2020-05-05*

I primarily wanted this app to make superscript notes on my monster levels in Pokemon Go. However, the keyboard globe wasn’t initially pulling up Formula Keyboard - Chemistry Keys in Pokemon Go like it was in Messages/Mail/Notes etc.

I’m not sure what solved my issue – whether it was deleting and re-downloading Pokémon go or restarting my phone in between, but works like a charm now!

Also, Glenn is an extremely responsive and awesome developer. Know that if you ever run into any kind of problems he’ll
be right there to help you through them!

**Developer response:** I think you are mistaken about what “Full Access” means. Regardless, I do need to update the keyboard. Sorry about any misbehavior I could have avoided.

## Frequently asked questions about Chemistry Keyboard

### What is Chemistry Keyboard used for?

Chemistry Keyboard is a specialized keyboard extension designed to help users easily input chemical formulas. It provides quick access to superscript, subscript, and arrow characters, along with Greek letters and other chemistry-related Unicode symbols.

### How much does Chemistry Keyboard cost?

Chemistry Keyboard is a paid app, available for $1.99. This one-time purchase grants you access to all its features without any additional in-app purchases or subscriptions.

### Does Chemistry Keyboard require an internet connection?

No, Chemistry Keyboard does not require network access. It is entirely self-contained and works offline, making it convenient for use anywhere without relying on an internet connection.

### What devices is Chemistry Keyboard compatible with?

Chemistry Keyboard is compatible with iPhone, iPad, and iPod touch devices. It is rated for ages 4 and up.

### How often is Chemistry Keyboard updated?

The latest version of Chemistry Keyboard is 1.2.2, last updated on September 18, 2025. Updates typically include improvements and new features for a better user experience.

### Can I use Chemistry Keyboard for general typing?

While Chemistry Keyboard excels at inputting chemical symbols, it can also be used for general typing. However, its primary strength lies in its specialized character set for scientific notation.

### What is the user rating for Chemistry Keyboard?

Chemistry Keyboard has received an excellent user rating of 4.9 stars from 14 ratings, indicating high user satisfaction with its functionality and ease of use.

### Does Chemistry Keyboard offer different subscription tiers?

Chemistry Keyboard is a paid application and does not operate on a subscription model. The single purchase price of $1.99 unlocks all features, with no recurring fees or different tiers to consider.

## Version history (last 5 releases)

### 1.2.2 — 2025-09-18

• Using iOS 26 style icons for the return keys
• Fixed tinted icon 
• Added a three characters, a backward arrow, Å, ∞

### 1.2 — 2022-11-29

• Cleaned up the keyboard icons for backspace, hide keyboard and choose keyboard. 
• Fixed some layout issues on iPad

### 1.1.4 — 2020-05-10

• Stability improvements.
• Improved dark theming

### 1.1.3 — 2019-04-03

• Fixed crash when backspacing. Thanks to S.W. for the report.
• Minor improvements in searching in the app.
• Minor layout fixes.

### 1.1.2 — 2018-12-10

• Support for newer devices.

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## Related topics

[chemistry keyboard](https://appshunter.io/ios/topics/chemistry-keyboard)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*