The zero-knowledge habit tracker that puts you in control. End-to-end encrypted, beautifully simple, and built for people who take their privacy — and their progress — seriously.
A startup from the United States that is founded by Mark Thayer, Ryan, Thayer, John Thayer.
Listed in
Post-quantum cryptography
Hybrid ML-KEM-768 + X25519 key encapsulation, the same approach as Signal.
End-to-end encryption on all plans
All data encrypted client-side before reaching the server. Every plan, not a paid upgrade.
Zero-knowledge email
No plaintext email stored. Only an HMAC blind index for lookups.
Habit tracking
Daily/weekly check-ins, streaks, and drag-and-drop reordering.
Goal setting
Milestones, progress bars, and habit linking.
Self-reflections
Mood tracking and daily prompts.
Schedule & calendar
Recurring events, day planner, and printable views.
Progress insights
Activity heatmaps and completion stats.
Family & group accountability
Shared habits, shared goals, group dashboard, and member spotlights.
Client-side data export
JSON/CSV export decrypted entirely in your browser. Server never sees plaintext.
Three encryption layers at rest
Client-side E2E → AES-256-GCM in Postgres → LUKS disk encryption.
Metamorphic is a new product and we don't disclose customer names. By design, we know as little about our users as possible — that's the point of zero-knowledge architecture.
Metamorphic is a zero-knowledge, end-to-end encrypted habit tracker — every piece of user data is encrypted client-side before it ever reaches the server. Unlike competitors that treat encryption as a premium add-on, Metamorphic includes it on every plan, including Free. It also uses hybrid post-quantum cryptography (ML-KEM-768 + X25519), the same approach adopted by Signal and Apple iMessage, making it one of the first habit trackers with quantum-resistant key distribution. The server never stores plaintext — not even your email address.
Most habit trackers store your data in plaintext on their servers. Metamorphic never sees your data — all encryption and decryption happens in your browser. If the server were fully compromised, an attacker would get only opaque ciphertext. Beyond privacy, Metamorphic is a complete self-improvement platform: habit tracking with streaks and drag-and-drop reordering, goal setting with milestones and progress bars, daily self-reflections with mood tracking, a full schedule and calendar with recurring events and printable views, progress insights with activity heatmaps, and family/group accountability with shared habits and goals. You get the depth of a full-featured tracker with the privacy of an E2E encrypted system — no trade-off required.
Privacy-conscious individuals and families who want a serious habit and self-improvement tool without surrendering their personal data to a third party. People who care about building better routines — daily habits, long-term goals, journaling, scheduling — but also care about who can read their data. Particularly relevant for anyone who has thought twice about logging personal struggles, health habits, or family goals into an app that stores everything in plaintext.
Metamorphic grew out of a personal conviction. Its creator, Mark Thayer, was building another app (Mosslet) around the time he was becoming a new dad. Reading Shoshana Zuboff's The Age of Surveillance Capitalism made him want a better digital world for his child. When Meta rolled back end-to-end encryption on its direct messaging, he was pushed to implement real E2EE in Mosslet — built on an asymmetric, password-derived key architecture.
The idea for Metamorphic itself came from his partner, who is passionate about psychology and behavior — always thinking about how to break old habits and form better ones. It clicked: something as personal as your habits, goals, and daily reflections should be private to only you, and you shouldn't have to worry about it being otherwise. So Metamorphic was built from day one around zero-knowledge architecture, where encryption is the foundation rather than an afterthought.
We have collected here some useful links to help you find out if Metamorphic is good.
Check the traffic stats of Metamorphic on SimilarWeb. The key metrics to look for are: monthly visits, average visit duration, pages per visit, and traffic by country. Moreoever, check the traffic sources. For example "Direct" traffic is a good sign.
Check the "Domain Rating" of Metamorphic on Ahrefs. The domain rating is a measure of the strength of a website's backlink profile on a scale from 0 to 100. It shows the strength of Metamorphic's backlink profile compared to the other websites. In most cases a domain rating of 60+ is considered good and 70+ is considered very good.
Check the "Domain Authority" of Metamorphic on MOZ. A website's domain authority (DA) is a search engine ranking score that predicts how well a website will rank on search engine result pages (SERPs). It is based on a 100-point logarithmic scale, with higher scores corresponding to a greater likelihood of ranking. This is another useful metric to check if a website is good.
The latest comments about Metamorphic on Reddit. This can help you find out how popualr the product is and what people think about it.
I'm the solo dev at Moss Piglet, a bootstrapped public benefit company. I've been building Metamorphic — a habit and self-improvement tracker where all personal data is encrypted client-side before it ever reaches the server. The server only stores opaque cipher-text blobs. - Source: dev.to / 5 months ago
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