link: https://frequency.app tags:

• ActivityPub
• Mastodon
• photos
• privacy

A social media app for private sharing of photos with friends and family.

It was great meeting @jesseplusplus.bsky.social at #FediCon

She’s the developer of Frequency frequency.app which is a private only photo sharing app that runs on a forked Mastodon back end called Decodon

github.com/jesseplusplu...

[image or embed]

— Boris (@bmann.ca) August 2, 2025 at 9:49 AM

Built on React Native for the mobile app on iOS, and the backend is a fork of [[Mastodon]] called Decodon "a media-focused fork of mastodon that supports only private/followers-only accounts".

Built by Jesse Karmani @jesseplusplus@mastodon.social / @jesseplusplus.bsky.social‬

Decodon#

• All accounts are locked/private, meaning content is only distributed to followers jesseplusplus/decodon#1

• Support for push notifications to Expo-based apps jesseplusplus/decodon#2

• Pre-signed URLs for extra-secure storage of uploaded private media jesseplusplus/decodon#9

• replies are treated more like comments and are filtered from the home feed jesseplusplus/decodon#3

• circles (lists of followers you can address posts to instead of only followers) - cherry-picked from fedibird - jesseplusplus/decodon#13

• default "inner circle" for all accounts to get them started - jesseplusplus/decodon#14

• timeline markers for accounts' feed of updates - jesseplusplus/decodon#189

• more control over logo and branding in email templates jesseplusplus/decodon#10

• updated heroku deployment configs