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Alternatives

Products that do what ReTap - AI Spaced Repetition System does

Spaced repetition with AI-powered answer checking

  1. 1

    What if you had perfect memory?

    2023

  2. 2

    ChatGPT for your video library, with unlimited video context

    2025

  3. 3RA

    Reor is an open-source AI note-taking app that runs models locally. The four main things to know are: 1. Notes are connected automatically with vector search. You can do semantic search + related notes are automatically connected. 2. You can do RAG Q&A on your notes using the local LLM of your choice. 3. Embedding model, LLM, vector db and files are all run or stored locally. 4. Point it to a directory of markdown files (like an Obsidian vault) and it works seamlessly alongside Obsidian. Under the hood, Reor uses Llama.cpp (node-llama-cpp integration), Transformers.js and Lancedb to power…

    2024 · github.com

  4. 4

    Persistent memory for Claude, ChatGPT & Cursor. Free.

    May 2026 · github.com

  5. 5
    Retool AI402

    Build AI apps and workflows 10x faster

    2023

  6. 6

    Grammar check and rewriting in 6 languages

    2023

  7. 7RA

    Regex.ai is an AI-powered tool that generates regular expressions. It can accurately generate regular expressions that match specific patterns in text with precision. Whether you're a novice or an expert, Regex.ai's intuitive interface makes it easy to input sample text and generate complex regular expressions quickly and efficiently. Overall, Regex.ai is a game-changer that will save you time and streamline your workflow.

    2023 · regex.ai

  8. 8

    See how ChatGPT does what it does

    2024

  9. 9

    Boost your social media confidence like a native speaker

    2023

  10. 10

    The ultimate end-to-end collaborative bot platform

    2017

  11. 11

    The world's first instruction-following reranker

    2025

  12. 12

    Write it once, perfect it fast.

    2025

  13. 13

    Learn languages more efficiently with spaced repetition

    2017

  14. 14
    Spacify84

    Learn anything by utilising spaced repetition

    2019

  15. 15AP

    TLDR: We created a personalised Andrej Karpathy tutor that can response to questions about his Youtube videos in sub 1 second responses (voice-to-voice). We do this using a voice enabled RAG agent. See later in the post for demo link, Github Repo and blog write up. A few weeks ago we released the worlds fastest voice bot, achieving 500ms voice-to-voice response times, including a 200ms delay waiting for a user to stop speaking. After reaching the front page of HN, we thought about how we could take this a step further based on feedback we were getting from the community. Many companies were…

    2024 · educationbot.cerebrium.ai

  16. 16IB

    Hello Hacker News, When learning foreign languages, I made the most progress by speaking them throughout the day, every day. So I made a site where you can *speak* to an AI language teacher to practice both listening and speaking. # The product *What I have now:* * Multilingual speech recognition: You can ask a question in English and get an answer in your target language. * Feedback on your grammar. * Suggestions: See examples of what to say next to keep the conversation flowing. * Speed: Choose a lower speed for beginners or a faster one for advanced levels. * Translations: Click to see a…

    2023 · gliglish.com

  17. 17

    Explain what you know to AI and discover what you don't

    Jul 2026 · reexplain.app

  18. 18PA

    Hi, I'm Eric and I'm the founder and lead developer of Prepform. A high-quality education helped me pursue my interests and achieve my goals. I started Prepform so students of all backgrounds have access to the same kind of education. I grew up in Southern California, surrounded by dozens of SAT prep programs, and I swear I must have gone to all of them. Different programs followed different styles and techniques, but the strategy they shared was to create a study plan and review mistakes. A study plan is taking a diagnostic test, setting a target score, creating a study schedule,…

    2022 · prepform.com

  19. 19PE

    Spelltest framework simulates conversations between AI ‘synthetic users' in an environment to test and refine LLM-based applications. It ensures your app converse with utmost accuracy and relevance. Post-chat, Spelltest assesses responses, providing qualitative and quantitative feedback on performance. Suitable for both chat and completion modes. When to use: - After modifying your prompt. - When your LLM provider updates. - As a CI step for you repo. All feedback and collaborations appreciated!

    2023 · github.com

  20. 20

    AI tutor with spaced repetition.

    Feb 2026 · lambdio.com

  21. 21RA

    Hi HN, we are the founders of Relari (https://www.relari.ai). We launched our LLM evaluation stack on HN a few months ago (https://news.ycombinator.com/item?id=39641105), which is now used in production by AI teams at companies like Vanta and PwC. We have since expanded to directly optimizing parts of an LLM pipeline using a data-driven approach. In particular, we see a lot of potential in the Auto Prompt Optimization—which could be an attractive alternative to fine-tuning in many cases—to use data to align LLMs for domain-specific tasks. Here’s a demo video:…

    2024

  22. 22

    AI-powered flashcards + spaced repetition = faster learning

    Oct 2025

  23. 23OA

    Owl is built a spaced repetition app. We built it for ourselves mostly because we were unhappy with Anki from a UX perspective, and are now releasing it to everybody else. It is super tiny, but - we think - also pretty good. You can add your own decks manually, or generate them from a PDF (think academic papers, which is how I use that feature) or a prompt. There are no emails except study reminders (when there are cards to study). You can also use our "AI tutor" to review cards conversationally. Looking forward to your feedback!

    2025 · owl.cards

  24. 24
    Temar1

    AI powered learning automation with spaced repetition core.

    Apr 2026 · temar.app

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