There are apps available for the iPad that turn your iPad into a second monitor for the laptop. Realm Works can then use that as the player view screen.
There are six or seven possibilities for this, but it took me ages to find one that worked.
There were reasons for this. If you have something on your PC called "dual graphics switching", unless things have changed with the iPad apps, none of the wireless ones work. It's something to do with the way that graphics is handled by the iPad arguing with the way they're handled by the PC. Only three of the apps tell you this on their listing, the other three let you spend your money and then don't work, so you have to ask for a refund. Apple are very good about refunds, but it's a bit of a pest to have to do it repeatedly.
Nor do they tell you what 'dual graphics switching' looks like on your PC. If you have trouble with this, contact me and I can help.
I found the one program which did work was a wired one called 'Duet'.
It's less hassle than it sounds - I bought a 6 foot iPad cable, and used it with my players with great success.
The down side was that (1) there was only one iPad to five players, they had to share, and (2) because most of them were used to an iPad being interactive, it took a bit of time to convince them that the iPad in this case was just a dumb terminal, and I had control over what they could see. It was just a small TV, basically, and not interactive.
They got the hang of it eventually, but we had some fun and games at the start of the game, because whenever they touched the iPad screen, they 'stole' the cursor, and I had to get it back to use my PC.
Come the glorious day (o glorious day! let it be soon!) when we can use the web version, all this will be over with.