Hacker ApprovedDepartments

Koi.rest

Ranked 2 of 12 novelty websites by recommenders

People recommend it as a soothing koi pond with zen background sounds for relaxation. The most common caveat is laggy performance, with some critics reporting very low frame rates.

People recommend it as a soothing koi pond with zen background sounds for relaxation. The most common caveat is laggy performance, with some critics reporting very low frame rates.

29 people gave an opinion

recommend it
18
criticize it
11
approval share
62%
Each figure is one person. RecommendsCriticizes

Recommended in 1 of 13 months

  1. November 2025: not recommended
  2. December 2025: not recommended
  3. January 2026: not recommended
  4. February 2026: not recommended
  5. March 2026: not recommended
  6. April 2026: not recommended
  7. May 2026: not recommended
  8. June 2026: not recommended
  9. July 2026: not recommended
  10. August 2026: not recommended
  11. September 2026: recommended
  12. October 2026: not recommended
  13. November 2026: not recommended (month in progress)

Why it doesn’t carry the badge

  • 18 people recommend itNeeds 10 or more, met.
  • 1.6 recommenders for every criticNeeds 2 to 1 or better, not met.
  • Recommended in 1 of 13 monthsNeeds 4 or more, not met.

The same three rules apply to every product, and the badge can’t be bought. How the badge works

What people say about it

The reasons people give, with the number of comments that give each one. Open a reason to read what they said.

Why people recommend it

Each mark is one comment

  • Calming, zen-like relaxation

    “I'm listening to the sound and not watching the koi, and that is incredibly soothing/relaxing for my ADHD mind.”

    Comment from 25 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

    “The sounds and visuals are a great way to recenter.”

    Comment from 24 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

    “Top of bookmark list for a daily zen!”

    Comment from 24 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”
  • Zen background sounds

    “The sounds and visuals are a great way to recenter.”

    Comment from 24 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

    “I like the zen background sounds.”

    Comment from 24 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”
  • Polished UI and visuals

    “I dig the voronoi used as an approximation of caustics!”

    Comment from 25 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

    “I really like the UI especially the about page.”

    Comment from 24 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

What people warn about

Each mark is one comment

  • Laggy, slow performance

    “I'm on a laptop with 96 GB ram and a Ryzen AI 9 HX PRO 370, and it's running at 3 FPS.”

    Comment from 25 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

    “Seems like quite laggy (I suppose bcz of heavy assets and rendering)”

    Comment from 25 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

    “increase the frame rate of the fish animation”

    Comment from 24 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”
  • Too many fish overwhelm screen

    “there were some any fish that they fully covered the screen, couldn't see the bottom of the pond”

    Comment from 25 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

    “Too many koi fish is stressful (and slow)”

    Comment from 24 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”
  • AI-built code concerns

    “You don't know what's causing it to run this badly because you didn't write it.”

    Comment from 25 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

    “this was vibe coded so yes it has terrible performance”

    Comment from 24 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

Other novelty websites people recommend

The four most recommended other novelty websites, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.

Koi.rest compared with 4 alternatives
ProductRecommendCriticizeApprovalMonthsOwnedBadge
Catch a Bird39393%1——
Koi.restThis page181162%1——
neal.fun15575%8—Approved
Zombo.com8467%4——
Pumpkins.sh70100%1——
See all 12 novelty websites, ranked

What people said

24 of the 29 comments that mention it, newest first. Each links to the original comment.

“You don't know what's causing it to run this badly because you didn't write it.”

CriticizesComment from 25 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“I'm listening to the sound and not watching the koi, and that is incredibly soothing/relaxing for my ADHD mind.”

MixedComment from 25 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“Overall it's brilliant and I'm grateful that you went the ai route and launched.”

MixedComment from 25 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“I'm on a laptop with 96 GB ram and a Ryzen AI 9 HX PRO 370, and it's running at 3 FPS.”

CriticizesComment from 25 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“I dig the voronoi used as an approximation of caustics!”

RecommendsComment from 25 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“there were some any fish that they fully covered the screen, couldn't see the bottom of the pond”

CriticizesComment from 25 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“the audio kept cutting off arbitrarily after some minutes”

CriticizesComment from 25 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“This digital version is probably less messy and just as effective.”

RecommendsComment from 25 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“Seems like quite laggy (I suppose bcz of heavy assets and rendering)”

CriticizesComment from 25 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“it's running silky smooth for me on iPhone. No lag at all.”

RecommendsComment from 25 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“I want more koi fish swimming around my saas.”

RecommendsComment from 25 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“This is great! I would really like this as live background on Android.”

RecommendsComment from 24 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“This is honestly super cool, and a lot of fun.”

RecommendsComment from 24 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“this was vibe coded so yes it has terrible performance”

CriticizesComment from 24 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“I just thought this was janky crap.”

CriticizesComment from 24 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“the website was running quite slow for me”

CriticizesComment from 24 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“increase the frame rate of the fish animation”

CriticizesComment from 24 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“Choice about busyness would be nice.”

CriticizesComment from 24 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“Too many koi fish is stressful (and slow)”

CriticizesComment from 24 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“Top of bookmark list for a daily zen!”

RecommendsComment from 24 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“The sounds and visuals are a great way to recenter.”

RecommendsComment from 24 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“I really like the UI especially the about page.”

MixedComment from 24 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“I like the zen background sounds.”

MixedComment from 24 Sep 2026 in “Show HN: Koi.rest – watch some fish and regain your balance”

“We are big fans of having AI agents "own" koi's”

RecommendsComment from 14 Sep 2026 in “Pion, an agent designed to run any company autonomously”

Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.