Gradus is a daily ranking puzzle for puzzlers and quizzers. Each day you get six things to arrange from low to high: planets by distance from the sun, foods by fibre, novels by publication date. Lock in your order and see how close you were, with a shareable grid that never gives the answer away. One puzzle a day, the same for everyone, and it takes a couple of minutes. Free, no ads, and collects no data, storing your streak and results only on your device.
I'm an indie developer and researcher, and Gradus is a small daily puzzle I created as I love a quiz and learning something new. Each day you get six things and one axis, and you put them in order: planets by distance, foods by fibre, novels by publication date. You lock in your answer, see how close you were, and share a spoiler-free grid.
Unlike most puzzle apps it makes no promises to train your brain or make you smarter, because the evidence for that is rather weak. There will be subjects you will know and some that you might have to make an educated guess. It is simply a calm daily habit, and a quiet way to notice how you are doing over time. It is free, has no ads, no account, and nothing ever leaves your device.
I would genuinely love your feedback, on the puzzles, the difficulty, the daily rhythm, anything. And I am happy to answer questions about building it or the thinking behind it. Thank you for taking a look.