China Trip Journal
Saved on this phone
Everything is saved on this phone only, and works with no internet. Photos are shrunk to about 150 KB each.
Save a backup file every evening and keep it in WhatsApp or WeChat. To combine with your friend, send each other your backup files and tap Load backup file. Entries are merged, not replaced.
Don't clear browser data, and keep opening this file in the same browser, or entries won't show.