Subth.ink
write something and see how many others wrote the same
Details
- External ID
- 46682732
- Source
- HN
- Company
- —
- Product
- Subth.ink
- Website domain
- subth.ink
- Launched
- Jan. 19, 2026
- Cohort
- —
- Upvotes
- 92
- Upvotes percentile
- 0.8919631093544137
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:25 p.m.
- Updated at
- Sept. 7, 2026, 9:25 p.m.
Description
Hey HN, this is a small Haskell learning project that I wanted to share. It's just a website where you can see how many people write the exact same text as you (thought it was a fun idea).It's built using Scotty, SQLite, Redis and Caddy. Currently it's running in a small DigitalOcean droplet (1 Gb RAM).Using Haskell for web development (specifically with Scotty) was slightly easier than I thought, but still a relatively hard task compared to other languages. One of my main friction points was Haskell's multiple string-like types: String, Text (& lazy), ByteString (& lazy), and each library choosing to consume a different one amongst these. There is also a soft requirement to learn monad transformers (e.g. to understand what liftIO is doing) which made the initial development more difficult.
Enrichment
- Theme
- database infrastructure and developer tools
- Vertical
- Media & entertainment
- Function
- Search & retrieval
- Audience
- B2C
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- find similar thoughts written by others
- Manually corrected
- False
Could you build this?
Yes The functionality is minimal: a single input field that queries and updates a hash table or SQL/Redis database to count exact string matches.
Discussion
20 comments analyzed.
Competitors mentioned: r9k (similar duplicate-detection concept), 1,000,000 checkboxes (low-stakes community interaction)
Concerns raised: MD5 hash preimage recovery claims don't make cryptographic sense, Publishing hashes when thought count passes threshold won't recover sensible messages
Feature requests: Embeddings and similarity detection, Higher threshold before publishing hashes
Competitors
Other products that read as similar to this one — 66 launches clear the similarity bar, closest 8 shown.
Attention rank: #13 of 67 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 79 days after the earliest competitor.
- Learning Rust by writing a Markdown to HTML compiler · hn · 2026-07-29 · 25 upvotes · similarity 0.44
- AttaLambda: a language where types and data are made of untyped lambdas · hn · 2026-09-14 · 44 upvotes · similarity 0.40
- Quillium, the non-linear writing app · hn · 2026-04-02 · 5 upvotes · similarity 0.39
- GlyphLang · hn · 2026-01-10 · 44 upvotes · similarity 0.38
- A Haskell programmable-CAD environment, in the browser with WASM · hn · 2026-07-07 · 6 upvotes · similarity 0.38
- I'm not a PostgREST fan this is why I'm building an alternative · hn · 2026-09-09 · 5 upvotes · similarity 0.37
- Hsrs · hn · 2026-05-19 · 53 upvotes · similarity 0.37
- The Taka Programming Language · hn · 2025-12-03 · 12 upvotes · similarity 0.37
Other launches for this product
- No other launches for this product.