Privacy first. Locally run. Sticking to the basic.
OneOctave is live — cover as few as 3 keys and the app performs every other note, so even hard pieces are playable on day one. Falling notes show what to play, with Listen, Play, and Learn modes. Import any MIDI or build your own in the editor. Fully offline, no account.
Pick-to-Draw 1.2 adds one-tap background removal for reference photos (iPhone & iPad, iOS 17+) — so your palette and linework focus on the subject, not the background — plus a new "White background" option when saving and Simplified Chinese localization.
Visualize your thoughts and discover hidden connections. Your ideas, mapped and summarized securely on your device.
Turn any photo into your personal color palette — then get out of your way so you can draw.
You cover a few keys — OneOctave plays the rest. Import any MIDI or make your own, then play along at your own pace. Fully offline.
Academic English on your device — read equations aloud, fix rough grammar and word choice, and find the words for talks and papers. Private, offline, no account.
Compress GIF, WebP, and APNG files to any size target, entirely on your device. Built for stickers, emoji, and emotes.
Command one ship, from a humble sloop to a diesel ship. Read the trade winds and deliver cargo across 69 world ports.
Turn your drawings into playable animated comics — add motion, sound, speech bubbles, and voice, then share a single file anyone can open in a browser. No app needed.
Turn any photo into editable pixel art — then refine it pixel-by-pixel with a real editor, palette controls, and animation.
Turn any text data into stunning charts in seconds. Just paste your data or scan an image — TXToCHART instantly generates professional visualizations.
Drag colored blocks to solve picture puzzles. 700+ nonogram levels.
A charter-airline simulation built around real airports and climatological winds.
