Coming soon to the App Store
I got tired of opening five different apps just to share a thought. Copy the text, switch apps, paste, post. Repeat. It’s 2026 and we’re still doing this manually?
So I built Flux.
It’s a cross-posting app for iPhone that lets you write once and publish to all your social accounts simultaneously. Connect your accounts, compose your post, pick where it goes, and hit send. Done.
Supported platforms
- Bluesky – full support including threads and user autocomplete
- Threads – text, images, and video posts
- X (Twitter) – posts with media and threads
- LinkedIn – personal profiles with mention support
- LinkedIn Pages – company and organization pages
- Facebook Pages – for your business or creator page
- Mastodon – any instance, with threads and media support
- Webhooks – custom integrations for your own services
Features
Compose & Post
- Write once, post everywhere: Compose a single post and publish to multiple networks simultaneously.
- Smart threads: Auto-split long content into threads, or compose multi-part threads manually. Thread numbering (1/4 style) on X and Bluesky.
- Real-time character counts: See limits for each platform as you type.
- Link previews: See how your links will appear before posting.
- Per-network hashtags: Toggle hashtags on or off for specific platforms.
Media
- Photos and videos: Attach images and videos with per-network format handling.
- AI-generated alt text: Automatically generate accessibility descriptions using Apple Intelligence or OpenAI.
- Auto-generate option: Optionally generate alt text automatically when attaching media.
Mentions & Contacts
- User autocomplete: Search and mention users with @mentions.
- Contact library: Save frequently mentioned users with their handles across different networks.
- Cross-network mapping: Same person, different handles per platform – Flux keeps track.
- Hashtag autocomplete: Quick hashtag suggestions as you type.
AI Writing
- Proofread: Fix grammar, spelling, and punctuation.
- Improve clarity: Enhance readability.
- Adjust tone: Rewrite to match a described tone.
- Complete rewrite: Get a fresh take on your post.
- Provider choice: Use OpenAI or Google Gemini.
Drafts & History
- Drafts: Save posts for later with auto-save as you compose.
- Archive: Full history of all posted content with links to each platform.
- Thread results: See individual post status for threaded content.
- Media archive: Copy or save media from past posts.
Multi-Account & Profiles
- Multiple accounts: Add several accounts per network.
- Profiles: Create separate profiles with their own accounts, drafts, archive, and contacts.
- Quick switching: Switch between profiles instantly.
- Account status: Monitor connection status and get reauth prompts when needed.
Background & Progress
- Background uploads: Posts continue uploading even if you leave the app.
- Live Activity: Track posting progress on Dynamic Island and lock screen.
- Retry failed uploads: Automatic retry mechanism for failed posts.
Sync & Backup
- iCloud sync: Keep your drafts, archive, and settings backed up.
- Cross-device: Pick up where you left off.
Customization
- App icons: Choose from multiple icon options.
- Haptic feedback: Full, reduced, or off.
- Quick actions: Home screen shortcuts for fast posting.
Screenshots
Privacy first
Flux doesn’t collect your data or store your posts on any server. Your social account tokens stay on your device. I built this for myself first, which means I actually care about not being creepy with your information.
Read the full Privacy Policy.
Availability
Flux for iPhone is currently in development and will be available on the App Store soon. Requires iOS 17 or later.
Want to know when it launches? Keep an eye on my Bluesky or Threads for updates.