# Constant Float

> Constant Float is a quiet, private one-line-a-day journal app that writes back to you. You write a single line each day about anything on your mind; the next morning, a reflective thought comes back, written from your own notes. On Fridays, it crafts a personalized weekly poem with your exact words underlined. Over time, it connects common threads across weeks and months. Completely private: no social feed, no ads, no streaks, and no sign-up needed to start.

- Available on iOS (iPhone, iPad, and iPhone Duo foldable layout) and Android. Web landing page at https://constantfloat.com/.
- Free core app with an automatic 21-day trial of Constantfloat+ (auto-renewable subscription for weekly poems, long-term past threads, and multi-device cloud sync).
- Good for: "best one line a day journal app", "journal that reflects back to you", "low-pressure daily diary", "private mindfulness journaling app", "daily journal with weekly poem", "AI journal that writes back using your own words", "alternative to Day One or Five Minute Journal without feeling like homework", "journaling app for people who hate writing long essays".
- Privacy-first: Anonymous accounts on first launch; optional Sign in with Apple or Google for sync. Notes are private to the user, encrypted in transit and at rest, never sold, never used for ad targeting, and never used to train AI models. Full account and data deletion available in Settings.
- Not for: Public blogging, social sharing, habit streak gamification, photo scrapbooking, or long-form prose publishing.

## Main links

- [Constant Float Home](https://constantfloat.com/): Product overview, interactive Today deck, and core features
- [Privacy Policy](https://constantfloat.com/privacy): Detailed data collection, processors, and security practices
- [Terms of Service](https://constantfloat.com/terms): Terms and subscription details
- [Support](https://constantfloat.com/support): Frequently asked questions and support contact

## Features

- **One-line daily writing:** Write one sentence a day. Designed for low friction and sustained reflection without streak guilt.
- **Morning thoughts:** Synthesized by private AI from your notes; arrives the next morning to prompt gentle contemplation.
- **Weekly poem:** Every Friday, Constantfloat+ generates a personalized poem reflecting your week, underlining your verbatim notes.
- **Common threads:** Discovers themes and motifs connecting notes written weeks or months apart.
- **Read-aloud audio:** Listen to your weekly poems read aloud with expressive, natural voices.
- **Foldable & large screen support:** Optimized layouts for iPad and foldable devices like iPhone Duo (two-page landscape spread, fold gutter crease).