Things I’ve made

English summaries of 1,000+ classics of Japanese literature — Dazai, Sōseki, Akutagawa and around 150 more authors. Each book gives you an overview, the plot, the opening and the ending; 40+ major works add an in-depth, chapter-by-chapter synopsis. When a story grabs you, download the complete original from Aozora Bunko and read it in a vertical-text reader with furigana, or have it read aloud like an audiobook. The original texts are in Japanese only — the summaries are there to guide you.

• Free, no account
• 1,000+ works
• Vertical reader
• Furigana
• Text to speech
• No ads

A household ledger that asks for an amount and little else. No account, no login, no bank connection — the amount, the date, the category and a note all fit on one screen. Use it for the household budget, or for side income, investments and betting, whichever you keep track of. Charts and a calendar show where the money went, records export to CSV, and the app can be locked behind biometric authentication.

• Free, no account
• Charts & calendar
• CSV export
• Biometric lock
• No ads

A solar system simulator where every planet and moon moves under real gravity — not a pre-baked animation, but Newton's law being solved on your phone. Pick any date between 1900 and 2100 and the planets line up exactly as they do in that day's sky. 28 guided screens cover how space works, from lunar phases and eclipses to Kepler's laws and the three-body problem, and 10 more render the planets from actual spacecraft maps, each turning at its true rate.

• Free
• Real gravity
• 28 guided screens
• True-scale view
• Multilingual
• No ads

A photo app that makes a frame from one photo and a collage from two or more. For a frame, choose a white border or a washi paper stock, and the camera, lens, aperture, shutter speed, ISO and date are printed beneath the picture, so it comes out looking like a print. For a collage, lay two to nine photos out in a layout for that number, then adjust the margin, gutter, corner rounding and background. Everything is done on the device, and the finished picture shares straight out.

• Free, no account
• Frame from 1 photo
• Collage of 2–9
• Processed on device
• Filter by camera & lens
• No ads

A record of what pachinko and pachislot actually cost, one machine at a time. Enter what went in and what came back, and the app works out the result and the return rate. A calendar shows the wins and losses day by day, and totals build up automatically per parlour and per machine. Exchange-rate calculation, ceiling times, CSV export, a monthly loss limit, and a biometric app lock are all included. Japanese interface.

• Free, no account
• Calendar
• Per parlour & machine
• CSV export
• App lock
• 18+
• Ad-supported