Our Apps
Small, focused apps that do one thing well.
Voice Calculator
Hands-free math for iOS. Speak calculations naturally, add tax by voice, export to CSV, and keep a full audit trail. Perfect for cooking, shopping, and when your hands are busy.
Learn more →Voice Clock
Talking Clock for iOS. Hear the time announced aloud at any interval — perfect for when your hands are busy or your eyes are elsewhere.
Learn more →Skymap
AR Constellation Finder for iOS. Point your iPhone at the night sky to identify stars, constellations, and planets in real time with augmented reality.
Learn more →Cowboy Quick Shot
Western Reflex Game for iOS. Test your reflexes in a classic quick-draw showdown. How fast is your trigger finger?
Learn more →Batchly
Batch Photo Editor for iOS. Resize, watermark, and convert entire photo libraries at once — no subscription required.
Learn more →Flight Mode Chat
Offline Bluetooth Messenger for iOS. Chat with nearby friends over Bluetooth and Wi-Fi Direct — no internet, no phone signal needed.
Learn more →Learn Kanji
JLPT Flashcards for iOS. Master Japanese kanji with smart flashcards organised by JLPT level — from N5 all the way to N1.
Learn more →Hikers View
AR Peak Spotter for iOS. Point your camera at a mountain and instantly identify surrounding peaks with augmented reality overlays.
Coming soonAbout HarmonyAstroApps
HarmonyAstroApps is an independent iOS developer focused on building utility apps that respect your time, your privacy, and your attention.
Every app we ship is designed to do one thing well — without ads, tracking, or unnecessary complexity. If you have feedback or ideas, we'd love to hear from you.