KanjiSchool
Drag the slider. No other reader does this — and you should see it working, not read about it.
Tap any kanji for its meaning
After the rain stops, a rainbow appears in the sky.
A rainbow is made from sunlight and the water in the air.
Tiny drops of water bend the light and split it into seven colors.
The inner side looks purple, while the outer side looks red.
If you stand with your back to the sun, you can see the rainbow more clearly.
Try looking at the sky in the morning or in the evening.
Pick the hardest line you can still read. 20 seconds, no account needed.
Because that is how Japanese children learn to read. Japan's Ministry of Education fixes exactly which character belongs to which grade — so "grade 3" is a boundary you can verify, not a feeling. Every article here is machine-checked: if a single character sits above its grade, it is not published.
The result: you never hit a character you have not learned. That is the whole reason this product exists.
One article at the level you picked, sent at 7:00. No account needed. One tap to stop.