川助商店
Kawasuke Store
Small iPhone apps that take care of
everyday little hassles.
From sorting and comparing photos to calendar and fishing-unit conversion —
each one built to be simple and clean to use.
MenuApps
Crowns mark our most popular apps, based on downloads and paid upgrades.
Angler's Unit Converter
Convert confusing fishing units in an instant.
Similar Photo Search
Compare similar photos side by side and keep only the best shots.
JPEG/HEIF Converter
Quickly turn iPhone HEIC photos into JPEG, the format AI tools and websites accept most widely.
Image Compare
See exactly how two images are misaligned and how they differ.
Gengo Seireki
Western years, Japanese eras, zodiac, emperors and prime ministers in one timeline.
Coordinate Measure
Measure two points on an image, down to the pixel.
Shrine Visit Log
A quiet, private record of your shrine visits.
Privacy
Photos are analyzed and converted on your device whenever possible. The third-party services used for ads and purchases are described in our Privacy Policy.
Contact
For bug reports or requests, please use the contact form. Including the app name and your iPhone and iOS version helps a lot.