Life & fun · alternatives · 2026
24 alternatives to The Meme Vaccine
Hi HN, My name is Sapiens. I started learning about Reason and Science well into my 30s. I'd be fair to say that the Skeptic and Humanist communities saved my soul. So I made a mind-calibration tool in service of the cause. It's an app that quizzes the user about myths and misconceptions. By exploiting the resulting cognitive dissonance, it helps retune the user's confidence levels in their beliefs and improves their mental models. The tool uses Brier's so-called "proper" scoring system, a ruthless squared-error-loss scale (Brier scoring is widely used by intelligence agencies to align their…
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
Take a photo and instantly determine if it's healthy or not
2021 · testflight.apple.com · its alternatives →
- 2
PG has posted about improving social networks using something like an "intellectual CAPTCHA" many times [1][2][3][4] - "Make users pass a test on basic concepts like the distinction between necessary and sufficient conditions before they can tweet." I felt the same way. So I built one using a mix of simple math, logic, and Twitter/X Community Noted posts. Try sample questions here - https://mentwire.com/sample - without signing up. - Invites are temporarily open to HN users. - Onboarding test + one daily question before accessing feed, post or reply. - Posts authors are…
Apr 2026 · mentwire.com · its alternatives →
- 3
I've gotten to the point in my career where I now make strategic decisions often (hiring, firing, choosing what equipment to go with, etc.), as well as in my personal life where I need to strongly weigh my options for a big purchase or investment. I found a not-so-surprising parallel between the two as these decisions "resolved." Am I making good decisions or am I getting lucky? Did some research, read some books, and realized I should get in the habit of tracking my decision process. That quickly turned into the idea that formed Convexly. The landing page is a 10-question calibration quiz…
Apr 2026 · convexly.app · its alternatives →
- 4
Hello, I've been working on this side project for a few months: Cognitive biases shape our way to see things, our decisions and basically our lives... I wanted to create and share this website for a fast exploration of biases. It is based on the phenomenal Cognitive Bias Codex by Buster Benson. It's a powerful way to visualize biases, get a quick understanding of each while allowing one to go deeper. I am not a developer, just something I had interest in. It's just a small Minimum Viable App, increasing convenience to discover that fascinating field. I'd love for people to look at it and…
2025 · cognitivebiases.net · its alternatives →
- 5IC
I saw this app youlearn.ai on YC and thought of building it. They are claiming to have 1M+ users with just one feature which is to convert your learning material into summaries, quizzes etc. I gave this a shot and cloned almost most of the features in just 9+ hours of continous vibe coding (with 20% manual though). Now I'm selling this on mvp marketplace. Might probably open source it in future or give it free.
2025 · ai-tutor.mvpwrappers.com · its alternatives →
- 6DL
DankLearning: The world
2018 · danklearning.com · its alternatives →
- 7
Hey HN, This is a Show HN (poorly) disguised as an Ask HN. I'm launching https://www.parliant.ai, a survey tool that rethinks how surveys are created and answered. Instead of building forms, the survey creator just writes what they want to learn and AI takes it from there, chatting with respondents to get meaningful answers. To show how it works, I’ve created a short demo survey with the question in the title. The idea is for you to try it out and see the respondent experience, which is really the core of the innovation. I’d love to get your answers and your feedback. The survey is…
2025 · parliant.ai · its alternatives →
- 8
I love the idea of quantified self and recently decided to pull all of my data in one place. I pull all of my data from ActivityWatch, Wakatime, and Health Connect APIs :)
2023 · kshivendu.dev · its alternatives →
- 9
Free, 66 languages, one goal: a billion self-aware minds
Aug 2026 · cognitivebiases.academy · its alternatives →
- 10IF
Hello there! I hope you're doing well today! I wanted to share something with you. Recently I was on the hunt for the best way to journal daily. Well, I had this idea - what if I could feed all my daily entries to an AI (ChatGPT), and create a friendly, supportive character like Socrates or Simon Sinek? This way, I could ask any questions about my life and mental health, and get some amazing advice on how to improve myself! The results have been absolutely mind-blowing ! I even made a short GIF to show you how it works - check it out! - https://gifyu.com/image/SdHLH I've…
2023 · its alternatives →
- 11IH
Hey there, While searching for my next role as a PM in Blockchain + AI, I started building an AI-powered notetaker called MindNote: https://www.mindnote.online. The idea is simple: you input your thoughts, and AI helps you complete or modify them. If you decide to test it, try using the prompt: Keep this text and…"(add budget, complete list, organize alphabetically, add their translation, etc.). The first big release is all about modifying your notes with AI prompts. The next big step? Capturing thoughts directly from the mind using brain-to-text technology. There is a 3 days free…
2025 · its alternatives →
- 12
Hi HN! I built this tool, because Large Language Models are hallucinating their asses off and I wanted to test just how bad it is with a topic I know best - myself. I'm sure there are other egos out there who google themselves and essentially this is the new googling yourself. It's early beta, so lots of room for improvement of course.
2023 · haveibeenencoded.com · its alternatives →
- 13
Hi HN, I'm the creator of this project. For the past months, I've been working on building an AI agent that could move beyond simple generation and tackle inventive challenges autonomously. The core idea was to create a system with a "metacognitive loop"—the ability to recognize when it's stuck on a fundamental problem and then launch a sub-mission to solve that specific bottleneck before continuing. The linked article is a deeper introduction to the system's architecture and a snapshot from a recent run. I tried to design it to be evidence-grounded and self-critical to avoid the pitfalls of…
2025 · robw1se.substack.com · its alternatives →
- 14
Hello everyone, I doubt this would be relevant to the kind of person who uses HN, but I thought I could share for some feedback. I built this site because there is a whole world of people who believe in new age spirituality and I am very much one of them. It is a site where you get the users gender their goals and their images and use AI and psychology to generate images of them in the process of achieving their goals. I am so deeply struggling with how to get this highly on Google. I don't even know if that is important anymore. What are your suggestions with distribution and getting in…
2025 · visionboardsai.com · its alternatives →
- 15MA
Hi HN, I'm a solo developer learning to code, and I'd love to share my second real project: MapMyLearn, an AI-powered app that automatically generates personalized learning paths based on any topic you input. What it does: Takes a topic (e.g. "history of capitalism", "learn Rust", or "data storytelling") Uses AI to break it down into a structured course with modules and submodules Each submodule includes: - Detailed, pedagogical content (developed based on online sources to mitigate hallucinations) - A quiz of 10 questions - Recommended resources - An AI chatbot for Q&A - Optional audio…
2025 · its alternatives →
- 16
Hey! Just launched my new project. The cmaps platform was created after a long period of research and development in the field of education. It's known that human thinking is not linear, but rather associative. Without realizing it, we are constantly making connections between the things we learn. I believe that the best way to learn is to make these connections explicit. Instead of studying and taking notes in a linear fashion, we should be able to create a map of the concepts we are learning. This way, we can see the big picture and understand how everything is connected. I can say that…
2023 · cmaps.io · its alternatives →
- 17
Hi guys, I’m excited to share an update on ReproModel, an open-source toolbox designed to streamline the testing and reproduction of machine learning models. I, like many of you, have really struggled with benchmarking and comparing models, from missing code, to opaque experiment parameters slowing the process. I decided to take matters into my own hands, and created a mini-toolbox in my free time to streamline the process. The goal is to reduce the time and effort spent on replicating experiments, enabling researchers to focus on innovation rather than setup. Knowing this task is not an…
2024 · github.com · its alternatives →
- 18
AI judges your arguments. Get proof you were right!
Dec 2025 · whosright.xyz · its alternatives →
- 19IB
I was somewhat hesitant about sharing this personal projects, especially since I just saw that cool looking Werk[1] tool posted, but I figured that my ADHD-fueled creation might still have it's own place to be. I just finished rewriting the code for a personal tool I use to automate terminal tasks while minimizing the amount of Python/Bash code I have to write. As with all other tools I create for my own use, the guiding principle is simplicity and approachability, as if the tool creates more issues or friction than it solves, I'll get discouraged from using it again. [1]:…
Jun 2026 · 0xff.nu · its alternatives →
- 20IM
Yes, there's no reason for this to exist, it is just funny.
2025 · try.freemind.ai · its alternatives →
- 21
Atrophy is an iOS self-report quiz aimed at software engineers who use LLMs heavily enough at work to wonder if they're trending toward AI over-reliance or some form of AI psychosis. I built it because I noticed a pattern: formerly AI-skeptical coworkers now open every standup or design discussion with "I asked Claude..." or "Claude told me..." for technical problems and design decisions. I've felt the same pull myself to delegate every task or problem to AI. It's easy to lean on these tools for almost any amount of critical thinking or problem solving, and I'm worried about what it means…
May 2026 · apps.apple.com · its alternatives →
- 22MO
I'm Arthur, and I wanted to share an MVP for Marqt.org, which lets you crowd-source the truth. John Stuart Mill said that "Truth emerges from the clash of ideas." In that spirit, Marqt brings two adversarial sides together to quantify truth and showcase the best arguments for each side. It is inspired by markets, where buyers and sellers discover a product's true price and update it dynamically. The ultimate aim is to build an open-source semantic knowledge base that represents the collective wisdom of humanity in real-time. If we can do this, I believe it can solve the problem of…
2023 · marqt.org · its alternatives →
- 23
Hear yourself. Understand yourself.
Jan 2026 · mind-laboratory.netlify.app · its alternatives →
- 24
100% Anonymous | Encrypted | Trained on 114m Parameters
May 2026 · ratemydick.ai · its alternatives →
Also compare
- Super Nudge Beta alternatives
- I Built Paul Graham's Intellectual Captcha Idea alternatives
- I built a 2-min quiz that shows you how bad you are at estimating alternatives
- Cognitive Bias Explorer alternatives
- I cloned a YC funded app in a day as an MVP alternatives
- Dank Learning – mobile app to make memes with AI alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →