There is no Mac version of Lightkey. It is a Windows-only application, and its own FAQ says so directly. If you came here looking for word prediction on macOS, the closest equivalent is Charm, which predicts your next word as you type and lets you accept it with Tab.
Lightkey is a well-regarded predictive typing tool, and assistive technology suppliers recommend it often, which is why so many Mac owners go looking for it and hit a wall. Below we cover whether the virtual machine route is worth the trouble, and the five options that run on a Mac today.
Is there a Lightkey version for Mac?
No. Lightkey's official FAQ lists Windows 7, 8, 8.1, 10 and 11 as the supported operating systems. There is no macOS build and no announced plan for one. Anything described as "Lightkey for Mac" is either the Windows installer, a virtual machine workaround, or a different product entirely.
This trips up a lot of people because Lightkey is promoted heavily to dyslexia and specific learning difficulty buyers. Assistive technology suppliers such as Dyslexic.com stock it, and plenty of those buyers use Macs. The wider category has the same skew: WordQ, Co:Writer and Ghotit all grew up on Windows first, so round-ups of "best word prediction software" are dominated by tools a Mac owner cannot install.
Can you run Lightkey on a Mac anyway?
Yes, with a caveat that most people find decisive. Lightkey's FAQ suggests running it inside a Windows virtual machine such as Parallels. That works, and if your employer or funding body has specifically approved Lightkey, it is a legitimate route.
The catch is that the prediction only exists inside that Windows session. It helps in Windows Word or Outlook running in the virtual machine, and does nothing at all in Safari, Mail, Messages, Notes, or anywhere else on the Mac side. You are also paying for Parallels and a Windows licence on top of Lightkey, and running a second operating system costs battery life and memory.
For a small number of people that trade is worth it. For most, a tool built for macOS is simpler and cheaper. Our complete guide to word prediction on Mac covers the landscape in more depth.
What is the best word prediction for Mac?
1. Charm - $9.99 once
Charm is our own app, so treat this section accordingly, but word prediction is one of its three core features rather than an afterthought. As you type, it suggests the next word ahead of your cursor and you press Tab to accept it. It also corrects spelling in real time and fixes grammar, so you are not stacking separate tools.
It learns as you go. Phrases you type often, names, jargon, and addresses all start appearing as suggestions rather than being flagged as errors. Everything runs on your own Mac, so it works offline, and no account or sign-in is required.
One thing to be clear about: prediction runs live in native Mac apps such as Mail, Notes, Pages and Messages. In browsers and Electron apps such as Chrome, Slack and VS Code, you use Fix Selection instead, which means selecting your text and pressing Option-Command-V. That is a real limitation and worth knowing before you buy.
Charm costs $9.99 as a one-time purchase covering three Macs, runs on Intel and Apple Silicon, and requires macOS 14 or later. It is English only. If you want a walkthrough, see how to get word prediction on Mac.
2. macOS inline predictive text - free
Apple built predictive text into macOS, and a surprising number of people never switch it on. Go to System Settings, then Keyboard, then Text Input, then Edit, and turn on "Show inline predictive text". A grey suggestion appears ahead of your cursor and Tab accepts it, much like the iPhone keyboard.
It is free and already on your Mac, and for short messages it saves a genuine amount of typing. The limits are that it works mainly in native apps, there are no settings to control how aggressive it is, and it does not learn your specialist vocabulary. Start here before spending anything. Our setup guide for predictive text on Mac has screenshots if the menu path is fiddly.
3. Cotypist - freemium subscription
Cotypist is a dedicated inline prediction app for macOS and the nearest thing on the Mac to Lightkey's core purpose. It puts a greyed-out continuation ahead of your cursor across text fields and you accept it with a key press. Suggestions can run to several words at a time, which suits longer-form writing.
The free tier gives you full suggestions for your first 100 completed words each day, with a subscription unlocking unlimited use. The significant restriction is hardware: Cotypist runs on Apple Silicon only, so anyone on an Intel Mac is out.
4. Apple Intelligence Writing Tools - free
Writing Tools appear in the right-click menu across macOS and can proofread, rewrite, and adjust the tone of text you have already written. They are free on supported machines, but they are not word prediction. Nothing appears ahead of your cursor as you type, so if you want prediction to reduce keystrokes, this does not solve it.
They also require an Apple Silicon Mac and a recent version of macOS. Think of Writing Tools as a review step for finished text rather than typing support.
5. Dedicated assistive technology tools
If you have an assessment or funding in place, ask specifically about Ghotit Real Writer & Reader and Read&Write. Both have had Mac versions and are built around dyslexia and dysgraphia support rather than general typing speed, going further on phonetic spelling correction and text-to-speech than anything above.
Two caveats. Mac availability and feature parity vary by version, so confirm the current state with the vendor. And they cost hundreds rather than tens, which is why they usually make sense only when someone else is funding them. Our notes on writing tools for dysgraphia on Mac and autocorrect for dyslexia cover what to look for.
How do the Mac options compare?
| Option | Predicts next word | Works in every app | Price | On-device | Intel Mac |
|---|---|---|---|---|---|
| Charm | Yes | Live in native apps, Fix Selection elsewhere | $9.99 once | Yes | Yes |
| macOS predictive text | Yes | Mainly native apps | Free | Yes | Yes |
| Cotypist | Yes | Most text fields | Free tier plus subscription | Yes | No |
| Apple Intelligence | No | Yes, via right-click | Free | Mostly | No |
| Lightkey in Parallels | Yes | Windows session only | Lightkey plus Parallels plus Windows | Yes | No |
Which one should you pick?
Turn on the built-in macOS predictive text first. A week with it will tell you whether inline suggestions suit how you write. Some people love them and some find them distracting.
If you want prediction that learns your vocabulary, plus spelling and grammar correction in the same app, Charm is the one-time-purchase option and works on Intel and Apple Silicon alike. On Apple Silicon, if you do not need spelling or grammar help and are happy with a subscription, Cotypist is a strong dedicated choice. And if Lightkey has been prescribed to you specifically, the Parallels route works, it is just heavier than people expect. If you are still weighing up what prediction does day to day, what is word prediction is a good place to start.
Frequently asked questions
Does Lightkey have a Mac version?
No. Lightkey's own FAQ lists Windows 7, 8, 8.1, 10 and 11 as the supported systems, and there is no macOS build. The FAQ suggests installing Lightkey inside a Windows virtual machine such as Parallels if you want to use it on a Mac. On macOS itself, the closest equivalents are Charm, Cotypist, and the predictive text built into macOS.
What is the closest thing to Lightkey on a Mac?
Charm is the closest match for most people. It predicts your next word as you type and you press Tab to accept it, and it adds real-time spelling correction and grammar fixing on top. It works across Mac apps rather than in a single editor, runs entirely on your own machine, and costs $9.99 once for up to three Macs. Cotypist is the other dedicated option, though it requires an Apple Silicon Mac.
Is there free word prediction on macOS?
Yes. macOS includes inline predictive text, which you turn on in System Settings under Keyboard, then Text Input, then Edit, then Show inline predictive text. It shows a grey suggestion ahead of your cursor and you press Tab to accept it. It is free and reasonable for short messages, but it works mainly in native apps and offers no settings for how often or how far ahead it suggests.
Can I run Lightkey on a Mac using Parallels?
Technically yes, and Lightkey's FAQ suggests exactly that. You install Windows inside a virtual machine such as Parallels and run Lightkey there. In practice it only helps inside that Windows session, so it does nothing for your Mail, Messages, Safari, or Notes typing, and it means paying for Parallels and a Windows licence. For most people a native Mac tool is the better route.
Which word prediction tool works on an Intel Mac?
Charm and the predictive text built into macOS both run on Intel Macs. Cotypist requires Apple Silicon, and Apple Intelligence Writing Tools require Apple Silicon as well, so neither is an option on an Intel machine. If you are on a 2019 or 2020 Intel MacBook, that narrows the realistic choice to Charm or the free built-in feature.