Life planning, evidence-graded reference, and personal tools.
Significant-Hobbies builds products for private daily rituals and public living — from hobby tracking to evidence-graded health reference to lean-back entertainment.
Created and maintained by Sarthak Agrawal as part of his independent Foundry product fleet.
- Significant Hobbies — life planner for private daily rituals and public living. Hobbies, bucket lists, and side quests over time.
- What It Takes to Win — evidence-led visualization of 2,585 early-breakthrough paths, with explicit limits on causal and predictive claims.
- Materia — evidence-graded reference for remedies organized by body part. Body → condition → remedy → compound → study, with citations. Ad-free, not medical advice.
- Protein Index — source-aware nutrition, offer, and rating data for Indian protein products.
- Calorie — local-first food, water, and weight journal with private tracking and trends.
- Karte — AI link-in-bio profiles with conversational and agent-readable public modes.
- LoopTV — TV-style random video player for lean-back browsing of curated channels.
- MAL Explorer — anime and manga discovery with multi-axis filtering and watchlists.
- Chess Coach — AI-coached chess game for practice with coaching feedback.
- Reader — research library: capture, annotate, and AI-chat over your reading. Private by default.
- SWE Interview Prep — SWE learning OS with FSRS spaced repetition, drills, and feedback.
- ChatGPT Memory Insights — browser-only insight report and semantic memory for ChatGPT export ZIPs.
| Product | URL | What it does |
|---|---|---|
| Significant Hobbies | https://significanthobbies.com | Life planner for rituals and public living |
| What It Takes to Win | https://paths.significanthobbies.com | Evidence-led visualization of early-breakthrough paths |
| Materia | https://materia.significanthobbies.com | Evidence-graded remedy reference with citations |
| Protein Index | https://protein.significanthobbies.com | Indian protein-product intelligence |
| Calorie | https://calorie.significanthobbies.com | Private, local-first nutrition journal |
| Karte | https://karte.cc | AI link-in-bio profiles |
| LoopTV | https://tv.significanthobbies.com | TV-style random video player |
| MAL Explorer | https://anime.significanthobbies.com | Anime/manga discovery with multi-axis filtering |
| Chess Coach | https://chess.significanthobbies.com | AI-coached chess practice |
| Reader | https://read.significanthobbies.com | Private research library with AI chat |
| SWE Interview Prep | https://learn.significanthobbies.com | SWE learning OS with spaced repetition |
Significant-Hobbies is a supporting organization rather than one of the four spotlight products on Sarthak's personal landing page. The broader fleet directory lives at SaaS Maker.
Significant-Hobbies is part of the Foundry fleet — a personal product fleet by Sarthak Agrawal. See the fleet build log for the real git history behind these products.
- Hub: https://sassmaker.com
- Fleet build log: https://sassmaker.com/build-log
- Significant Hobbies product page: https://sassmaker.com/p/significanthobbies
- What It Takes to Win: https://paths.significanthobbies.com
- Materia product page: https://sassmaker.com/p/materia
- Protein Index product page: https://sassmaker.com/p/protein-index
- Calorie product page: https://sassmaker.com/p/calorie
- Karte product page: https://sassmaker.com/p/karte
- LoopTV product page: https://sassmaker.com/p/looptv
- MAL Explorer product page: https://sassmaker.com/p/anime-list
- Chess Coach product page: https://sassmaker.com/p/chess
- Reader product page: https://sassmaker.com/p/reader
- SWE Interview Prep product page: https://sassmaker.com/p/swe-interview-prep
Fleet-listed products expose machine-readable entrypoints where implemented. See each product's page on the hub for the verified list.
