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Life & fun · alternatives · 2026

MD

A father-designed ventilator prototype that uses a bicycle pump as its mechanism. Created and built during the early pandemic period, this project demonstrates an approach to emergency respiratory equipment using… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. My dad designed and built a ventilator prototype with a bicycle pump launched in 2020; newer entries below may have overtaken it.

  1. 1

    Hey HN! Some more info: I’m an NHS doctor and the founder of Pi-A (https://www.pi-a.io) which developed Lungy (https://www.lungy.app). Lungy is an app (iOS only for now) that responds to breathing in real-time and was designed to make breathing exercises more engaging and beneficial to do. It hopefully has many aspects of interest to the HN community – real-time fluid, cloth and soft body sims running on the phone’s GPU. My background is as a junior surgical trainee and I started building Lungy in 2020 during the first COVID lockdown in London. During COVID, there were…

    2023 · lungy.app · its alternatives →

  2. 2ID

    It was a lot of work as a solo project but I hope you guys think it’s cool. When I say “we” in the website it’s only in the most royal sense possible. I also did all the photo/videography. I started out designing a single machine for personal use, but like many things it sort of spiraled out of control from there. I felt like espresso machines were getting very large, plasticky, and app-integrated without actually improving the underlying technologies that make them work. The noisy vibratory pumps in particular are from 1977 and haven’t really changed since then. So I wanted to focus on…

    2024 · velofuso.com · its alternatives →

  3. 3
    Saver▲92

    Emergency breathing device

    2015 · mysafetyiq.com · its alternatives →

  4. 4

    An open-source collaborative ventilator project. 🚑

    2020 · openlung.org · its alternatives →

  5. 5

    CubaWand is an easy-to-use hand-held baby breathing monitor

    2021 · its alternatives →

  6. 6

    World's first REAL hoverboard (pre-launch)

    2014 · whitecollarglam.com · its alternatives →

  7. 7

    Hi HN, This is my attempt to fix groggy mornings by lowering my bedroom CO2 from 1700 ppm to ~900 ppm. I designed a simple, 3D-printed fan duct that directs air under the door to improve air circulation. A note on the design process: I used CadQuery, a Python library for creating parametric 3D models. I didn't know tools like this existed and highly recommend it if you can program; it turned out to be more convenient than manually iterating on prototypes in a GUI. The project is open source and the post explains the full build. Happy to answer any questions.

    2025 · lepekhin.com · its alternatives →

  8. 8

    3D Printed Cycloidal Gearbox . Contribute to tom-ilan/cycloidal_gearbox development by creating an account on GitHub.

    Aug 2026 · github.com · its alternatives →

  9. 9

    Front wheel drive + compact bicycle that comes as a kit.

    2018 · kickstarter.com · its alternatives →

  10. 10

    A new vision for non‑emergency medical transportation.

    2016 · its alternatives →

  11. 11

    Portable electric air pump that can quickly inflate/deflate.

    2018 · kickstarter.com · its alternatives →

  12. 12

    3-in-1 air freshener with dynamic animation

    2021 · numberzero.net · its alternatives →

  13. 13VT

    Long time reader, first time self-promoter. I'm a bicycle mechanic that figured I could make the process of bicycle wheelbuilding faster, more accurate and more satisfying. I do it by sampling digital indicators, rendering the data in useful ways, and injecting domain-specific insights. The UI interaction happens by foot pedal so my paradigm retains the traditional way of working with your hands.

    2022 · islandix.com · its alternatives →

  14. 14

    Two-wheeled Bike innovations that'll blow your mind

    2015 · soundcloud.com · its alternatives →

  15. 15
    Molekule▲174

    The world’s first molecular air purifier

    2016 · molekule.com · its alternatives →

  16. 16

    Hey HN! I’m an NHS doctor and the founder of Pia (https://www.piahealth.co) which developed Lungy (https://www.lungy.app). Lungy is an iOS app that responds to breathing in real-time and was designed to make breathing exercises more engaging and beneficial to do. It’s been two years since Lungy launched (here’s the original ShowHN: https://news.ycombinator.com/item?id=34534615) and it's had a huge update and complete redesign. We rebuilt the whole app, and added a real-time 3D soft body solver which gives some really cool interactions like blobs /…

    2025 · apps.apple.com · its alternatives →

  17. 17
    Airing▲100

    A mask-less, hose-less, cordless micro-CPAP (pre-launch)

    2015 · fundairing.com · its alternatives →

  18. 18

    Regenerative Energy for Cyclists

    2014 · superpedestrian.com · its alternatives →

  19. 19
    SCORKL▲150

    Breathe underwater for up to 10 minutes

    2017 · kickstarter.com · its alternatives →

  20. 20

    MIT Engineered Bike Accessories

    2014 · its alternatives →

  21. 21
  22. 22

    A Japanese invention.

    2017 · its alternatives →

  23. 23ME
  24. 24

    Portable espresso machine

    2018 · handpresso.com · its alternatives →

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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 →