Ten tiny minutes, a sound you like, and a room that feels safe. That's the whole trick. Momentum does the rest.

Each finished session pays out immediately: streak up, dopamine hit, square on the board. No delayed gratification required.
Rankings and stats turn invisible effort into numbers you can see move. Novelty and competition keep the timer interesting.
Study in a shared room with others. Working alongside someone, even virtually, is one of the best-documented ADHD focus aids.
The heatmap shows where your hours actually went. External record beats internal clock.
Yes, with a tweak: shorter sessions. Many people with ADHD do better starting at 10 or 15 minutes instead of 25. The deadline creates urgency, and urgency is fuel.
Whatever you'll actually start. Begin with 10 minutes; once started, momentum usually carries you further. You can always run another sprint.
An accountability presence quiets the part of your brain looking for an exit. Peazehub's study groups give you that presence on demand.
Starting is the hard part. Make it tiny.