Each cell: kana · romaji. Tap a cell for 5 examples (in practice mode it reveals the hidden side); tap the 例 in the corner for examples anytime. A macron (ā, ō…) means a long vowel — hold it one extra beat.
A ゛(dakuten) on the upper right voices the sound (か ka → が ga); a ゜(handakuten) turns the H-row into the P-row (pa pi pu pe po). The ぽ in Sapporo is exactly a handakuten!
A small ゃ·ゅ·ょ merges with the previous kana into one sound. Size changes meaning: じゆう (jiyū, "freedom") vs じゅう (jū, "ten"). Focus on the common combinations.
Eight reading rules beyond the basic sounds that you meet every day while travelling. Sapporo (さっぽろ) and Hokkaido (ほっかいどう) are themselves a showcase of exceptions.
A curated set of signs you actually meet, from airport arrival to rental-car roads, grouped by where you see them. Each shows the sign as written (kanji included), then the hiragana reading and romaji. In practice mode the wording/reading is hidden — tap to check.