Features:
- Viskey is a keyboard for low vision users
- It has a very large, up to 200pt preview of text you are typing or editing
- It has a good contrast keyword layouts using Atkinson Hyperlegible font.
- Works great on an iPad
- Is multilingual out of the box
- Has a spelling corrector and is optionally self voicing
- Can also be used with VoiceOver
What Viskey is not
- Not designed for fast, fuzzy typing, but designed for accurate typing.
So if you can see fairly well, or a little bit, Viskey might be something you like.
If you are fully blind, in it's current form the autocorrection is not really suitable.
You can install it through TestFlight:
https://testflight.apple.com/join/thPPmKV8
TestFlight is an Apple service and lets you run the testable app for 90 days. Any in-app purchases you make with a TestFlight version of the app will be not be charged, but you can test the payment flow. You'll have a fake credit card which always goes through. If only it would happen so in real live as well :)