# SciKey - Scientific Keyboard

> Customizable scientific keyboard for iOS with over 3,000 characters. (iPhone/iPad app by shazino.)

- Source: https://appshunter.io/ios/app/scikey-scientific-keyboard/id927863083 (this page in markdown: same URL + `.md`)
- Developer: [shazino](https://appshunter.io/developer/529461205)
- Category: Utilities, Education
- Price: Free with in-app purchases
- Rating: 3.00/5 from 66 App Store ratings · 120 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 16 MB
- Languages: American English
- Released: 2014-10-15
- Data updated: 2026-06-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/scikey-scientific-keyboard/id927863083/reviews.md

## What is SciKey?

SciKey is a Scientific Keyboard that brings you the essential scientific characters for your iPad, iPhone, and iPod touch.

Fully customizable, with more than 3,000 characters to choose from, to build your perfect keyboard (requires in-app purchase).

It includes Greek and Latin letters, mathematical symbols, emoji and much more missing from the standard iOS keyboard. It also works for text snippets.

You can use it from all your applications: on the web, composing emails, taking notes, writing your next publication... it simply works everywhere.

## Key features

- 3,000+ scientific characters
- Greek and Latin letters
- Mathematical symbols
- Emoji support
- Customizable keyboard layout
- Text snippet support
- Works across all apps

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| SciKey Pro | $0.99 | one-time |


## What do users think of SciKey?

Overall sentiment: mixed

**Pros**

- 👍 Great for math and science
- 💡 Highly customizable keyboard
- 💰 Fair price for pro version
- 🚀 Easy to set up and use
- ✨ Offers many useful symbols
- 💯 Best math/science keyboard found
- ✅ Works flawlessly for years
- 💎 Game changer for notes
- 🌟 Underrated and amazing

**Cons**

- 💰 Requires payment for customization
- 📉 Limited options in free version
- 🐛 Doesn't work on newer iOS versions
- ⏳ Outdated, last update 4 years ago
- 🤏 Some symbols are too small/low
- 🚫 Missing many major notations
- 💸 Unclear upgrade process
- 🐌 Slow keyboard loading
- 📱 Keys too small on iPad
- 🪫 Resource-intensive
- 🧱 Keyboard freezes/stuck
- 💸 Paid upgrade didn't upload
- ❌ Not compatible with PDF apps
- 🤷‍♂️ Lacks basic symbols like comma/period
- 🤔 Unclear why some rows are for regular letters
- 👎 Poor design choices
- 🚫 No customer support
- 🧩 Limited structure
- 📉 Very few symbols available
- 🚫 Doesn't work at all
- 🪦 Crap without full access
- 🗑️ Going to trash
- 🔒 Requires full access (privacy concern)
- ❓ No globe key to switch keyboards

**Commonly reported bugs**

- Keyboard does not run on iOS 18
- Keyboard unavailable after installation
- Crashes instantly on iOS 17.4.1
- Customized keyboard did not upload
- Restore pro link is not a link
- Keyboard stuck on first key press
- App operates incredibly slowly (1 keystroke every 3-4 seconds)
- External keyboard bug on iPad Pro (keyboard disappears)
- Cannot delete app
- No globe key to switch between keyboard types
- Keyboard freezes phone
- Keyboard is slow to open
- Glitchy
- Keyboard response is incredibly slow
- External keyboard bug
- Keyboard is slow on iPad 2
- Keyboard doesn't appear with iPad Pro keyboard attached
- Keyboard stuck
- Keyboard is slow
- Keyboard is slow on opening
- Keyboard is glitchy
- Keyboard is slow on iPad 2
- Keyboard doesn't appear with iPad Pro keyboard attached

**Most requested features**

- Add negative exponent
- Add superscript -n for x^(-n)
- Add parentheses
- Add superscript and subscript letters
- Add negative powers and subscripts
- Add superscript + and - for ionic charge
- Add modifier letter small i and θ
- Improve positioning of exponents 1, 2, 3
- Add more pages/keyboard layouts
- Add negative powers and negative subscripts
- Add power set symbol
- Add Theta symbol
- Add more modes or key-hold options (e.g., holding '4' for '4', '⁴', '₄')
- Add >=, <=, ==!, Subset, Intersect, —>, <—>, Absolute =, v
- Add more key rows
- Add negation sign (A with a line above)
- Allow control with spacebar for text editing
- Long press on keyboard switch key for selection
- Add shortcuts (e.g., Ctrl+2 for λ)
- Add subscript letters for chemical states (AQ, S, L)
- Add power set symbol
- Add more symbols
- Add 'n' and 'r' as subscripts
- Add 'x' to the power of 'n'
- Add conjunction symbol, disjunction, quantifiers, implication, set notation
- Add xbar symbol
- Add comma or point
- Add 'there exists' and 'for all' symbols
- Add more subscript and superscript options (alphabet, +,-)
- Add capital theta, x, y, z subscripts, subscript k and s
- Add integral symbol
- Add capital θ, x, y, z subscripts, subscript k and s
- Add |R, |N, Z, Q symbols
- Add capital theta
- Add equation arrow (-->) and equilibrium arrows
- Add superscript + and -
- Add more symbols for trigonometry
- Add parenthesis
- Allow rearranging keys and creating custom pages
- Add 'hold on letter to get something else' feature
- Add radical sign
- Add more physics symbols
- Add shapes for common graphs
- Add more keyboard layouts
- Add more keys to the layout
- Add Apple modifier key symbols (command, escape, Apple logo, Twitter logo)
- Add more rows of keys for iPad
- Add superscript and subscript numbers
- Add superscript + and -
- Add subscript and superscript alphabet
- Add Greek letters like μ
- Add more subscripts and superscripts
- Add arrow symbol for limits and functions
- Remove Latin and Greek letters to make space for more symbols
- Turn off keyboard sounds
- Add period
- Add basic symbols for calc/chem/trig kits
- Add more keys
- Make multiple different keyboard layouts and choose which one to use
- Add parentheses
- Add more symbols
- Add integral symbol
- Add theta
- Add capital θ
- Add x, y, z subscripts
- Add subscript k and s
- Add power notation and subscript notation
- Add shapes for common graphs
- Add |R, |N, Z, Q symbols
- Add capital theta
- Add equation arrow (-->) and equilibrium arrows
- Add superscript + and -
- Add more symbols for trigonometry
- Add parenthesis
- Allow rearranging keys and creating custom pages
- Add 'hold on letter to get something else' feature
- Add radical sign
- Add more physics symbols
- Add shapes for common graphs
- Add more keyboard layouts
- Add more keys to the layout
- Add Apple modifier key symbols (command, escape, Apple logo, Twitter logo)
- Add more rows of keys for iPad
- Add superscript and subscript numbers
- Add superscript + and -
- Add subscript and superscript alphabet
- Add Greek letters like μ
- Add more subscripts and superscripts
- Add arrow symbol for limits and functions
- Remove Latin and Greek letters to make space for more symbols
- Turn off keyboard sounds
- Add period
- Add basic symbols for calc/chem/trig kits
- Add more keys
- Make multiple different keyboard layouts and choose which one to use

## Recent user reviews (10 of 120)

All indexed reviews: https://appshunter.io/ios/app/scikey-scientific-keyboard/id927863083/reviews.md

### 1/5 — Do not install. use better alternatives

*2026-01-17, version 2.2.5*

This apps requires you to pay to customize your keyboard. The unpaid version gives you an extremely limited set of options. If you're going to use mathematical/scientific keyboards, use Symbol Keyboards. The developer has a name with Chinese characters – that app will give you access to thousands of characters for free. If you have installed this app, PLEASE rate it one star like me so we can lower this app's rating to 2.9 stars. Do everything to shadowban this app from appearing in the App Store's search results. If you're writing a review, please tell other people about BETTER ALTERNATIVES.

### 4/5 — Fantastic for socials

*2025-10-29, version 2.2.5*

μγμ½ππ

### 1/5 — Doesn't work on IOS18

*2025-08-10, version 2.2.5*

Hasn't been updated in four years. Will not run, keyboard will not be available when you install it.

### 4/5 — Need negative exponent.

*2025-08-05, version 2.2.5*

Please add negative exponent to kb or at least push x^(-n) to display x with superscripted -n

### 5/5 — かなり便利

*2025-07-20, version 2.2.5*

シンプルで使いやすい。欲を言えば、()を追加してくれると嬉しい。

### 4/5 — Please make superscript and subscript letters! Apart from that GREAT, AND WONDERFUL APP FOR NERDS!

*2025-04-26, version 2.2.5*

The first part of my title is a NEED. Apart from that I have a few other critiques but it is just me being nit picky. For example the ‘∓±’ sign has a unbolded minus-or plus, but bolded plus-or-minus sign. Another nit picky point is the proportionality sign ‘∝’ is a bit too small and low. Preferably make the sign look similar to ‘∞’. But honestly these are tiny points and I can’t stress how cool this app genuinely is, I think it’s such a game changer cause it makes me genuinely look forward to making my notes, I try use as many of the characters as I possibly can like δ for slight change and Δ for major change or the typical ‘∴’ and ‘∵’.  But yeah it is just so cool and yeah I really do hope you implement these changes cause then it would be the DREAM KEYBOARD, and it isn’t far off already!

### 5/5 — definitely underrated

*2025-01-30, version 2.2.5*

Absolutely amazing.can’t thank you enough.

### 5/5 — Goes hard

*2024-12-15, version 2.2.5*

Big 👍

### 2/5 — Very low option. Missing most of major notations

*2024-10-10, version 2.2.5*

Disappointing

### 4/5 — Good Service for Students

*2024-09-17, version 2.2.5*

+ A great tool for both Maths and Science students, offering a variety of symbols and letters that would usually be quite laborious to access. 
+ Very easy to set up in Settings, with great instructions if needed.
- It’s a bit of a shame that you have to pay to customise the keyboard, but the price is quite fair.

## Frequently asked questions about SciKey

### What does SciKey do?

SciKey is a specialized keyboard for iOS devices that provides access to a vast library of scientific characters. It includes Greek and Latin letters, mathematical symbols, and emoji, which are not readily available on the standard iOS keyboard. This allows users to easily input complex characters for academic, scientific, or technical writing.

### What are the key features of SciKey?

The app offers over 3,000 scientific characters, including Greek and Latin letters and mathematical symbols. It is fully customizable, allowing users to build their ideal keyboard layout. Additionally, it supports text snippets and integrates seamlessly with all iOS applications, from web browsing to email composition and note-taking.

### How much does SciKey cost?

The base application is free to download. However, to access the full range of over 3,000 characters and customization options, an in-app purchase is required. This unlocks the complete functionality of the scientific keyboard.

### On which devices can I use SciKey?

SciKey is designed for Apple's iOS ecosystem. It is compatible with your iPad, iPhone, and iPod touch. The keyboard can be used within any application on these devices, ensuring consistent access to scientific characters wherever you need them.

### What are common use cases for SciKey?

Common use cases include writing scientific papers, composing emails with technical terms, taking notes in STEM classes, solving mathematical problems, and creating documents that require specialized symbols. It's also useful for anyone who frequently needs to type characters outside the standard alphabet and punctuation.

## Version history (last 5 releases)

### 2.2.5 — 2019-11-21

- Bug fixes

### 2.2.4 — 2016-05-29

- Bug fixes

### 2.2.3 — 2016-05-18

- Performance improvements

### 2.2.2 — 2016-03-07

- Play keyboard clicks (when enabled in general Sounds Settings)
- Support keyboard dark appearance

### 2.2.1 — 2016-02-12

- Performance improvements
- Bug fixes

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All apps by shazino: https://appshunter.io/developer/529461205

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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 2026-06-10.*