I made a dartboard solver for iPhone/iPad that scans the board instead of making you type it in
I really liked the Billiard Room dartboard at first. Then after having understood all the rules and being very late in the game it stopped being a puzzle and turned into homework.
There's already a good free web solver for this that got posted here a while back, open source, does the maths correctly, worth using. The thing that still bothered me is that you have to click the entire board in by hand, and on a late-game board that manual entry is most of the tedium, sometimes it takes more than doing the actual math.
So I made Dartboard Solver for iPhone/iPad. You take a picture of your screen, it reads the board, segment colours, ring order, >!bullseye symbol, outer-ring modifiers!<, and gives you the answer with the steps, so you can check it rather than just trust it. When needed, manual entry is quicker, I tried to make it as smooth as possible.
On pricing, up front: the app is free to use. Manual board entry is unlimited and always will be, same as the existing web solvers, no cap, no account. Photo recognition is the paid part: limited scans a day free, unlimited on subscription. After you run out of scans, type the board in like you would anywhere else, and still get your answer.
https://apps.apple.com/it/app/dartboard-solver/id6790452378
On the recognition specifically: photos of a monitor or TV work, even tested with moiré, but glare, heavy off-angle shots and unusual display colour profiles (night shift for example) can trip it up. If it misreads a board for you, post the photo in this thread or send it directly via the in-app contact link, >!the rare late-game symbols are exactly the ones I have the fewest samples of!<, so a bad photo is genuinely more useful to me than a good one.
I hope you enjoy it and find it useful!