
CheckIO
Project Euler
Scratch
Exercism
Screeps
Tynker
Code.org
Learn programming with a multiplayer live coding strategy game.

Veklar
Sociall (Beta)
Habitica
Solcial
Karmanadi
Habitify
ChatterBooth
A habit tracker that can't read your habits.

Which is more popular?
Based on our record, CodeCombat seems to be a lot more popular than Metamorphic. While we know about 72 links to CodeCombat, we've tracked only 1 mention of Metamorphic.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | codecombat.com | metamorphic.app |
| Pricing | — | |
| Company | — | Startup from the United States · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of CodeCombat yet.
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.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
CodeCombat is recommended for beginners, especially younger individuals or students, who are interested in learning programming in a gamified environment. It's particularly suitable for those who enjoy visual learning and interactive challenges.
No analysis of Metamorphic yet.
Walkthroughs and reviews on video.
~~CodeCombat review 2017 | Everyone can learn to Code ~~
Creator Walkthrough: Exploring Metamorphic’s Features & Benefits
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing CodeCombat and Metamorphic.
Metamorphic's answer:
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's answer:
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.
Metamorphic's answer:
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.
Metamorphic's answer:
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's answer:
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.
Metamorphic's answer:
Share your experience with using CodeCombat and Metamorphic. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


CodeCombat is an online platform through which numerous users can develop levels with the help of education regarding programming. This platform can let its users engage with the contribution related to multiple...
We have no reviews of Metamorphic yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Anita: I have lifetime access to the subscription-based code-learning website, CodeCombat, where I enjoy learning Python and taking all the Game Development courses offered there. Those games I made were a part of the Game Development 1... - Source: dev.to / over 2 years ago
And https://codecombat.com, which has been around for a while now. I think this paradigm (navigating a character using "move" function invocations) is good but kind of exhausts its usefulness after a while. I question whether my... - Source: Hacker News / over 2 years ago
So now, while you have time (yes you have no time now but when you are out of school working with a child and or no summer vacation you will have less time) you can try MIT Scratch or CodeCombat and learn to code. For you it's a long the... Source: almost 3 years ago
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... - Source: dev.to / 5 months ago
When comparing CodeCombat and Metamorphic, you can also consider the following products.

CheckIO is a web site with a mission: To teach JavaScript and Python coding skills through a game-playing interface. It is designed to teach new skills or improve existing skills through completing challenges.
Compare CheckIO to CodeCombat or Metamorphic:

Veklar is an independent social network that prioritizes data protection, discretion and respect for the privacy of its users.
Compare Veklar to CodeCombat or Metamorphic:

Project Euler is a series of challenging mathematical/computer programming problems that will...
Compare Project Euler to CodeCombat or Metamorphic:

A secure and private decentralised social network for all.
Compare Sociall (Beta) to CodeCombat or Metamorphic:

Scratch is the programming language & online community where young people create stories, games, & animations.
Compare Scratch to CodeCombat or Metamorphic:

Habitica is a free habit building and productivity application.
Compare Habitica to CodeCombat or Metamorphic: