Life & fun · alternatives · 2026
24 alternatives to An attempt to measure fermentation activity from the sound of bubbles
Bubbleometer is a tool that measures fermentation activity by detecting the sound of bubbles passing through an airlock. Using a simple microphone connected to a laptop and a bash script with audio processing, it… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. An attempt to measure fermentation activity from the sound of bubbles launched in 2017; newer entries below may have overtaken it.
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Hi HN! I’ve been working on an air quality measuring device called Air Lab for the past three years. It measures CO2, temperature, relative humidity, air pollutants (VOC, NOx), and atmospheric pressure. You can log and analyze the data directly on the device — no smartphone or laptop needed. To better show what the device can do and how it feels like, I spent the past week developing a web-based simulator using Emscripten. It runs the stock firmware with most features available except for networking. Check it out and let me know what you think! The firmware will be open-source and available…
2025 · networkedartifacts.com · its alternatives →
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A simple webserver / CO2 Monitor. Contribute to Maddimax/MadCO2 development by creating an account on GitHub.
2019 · github.com · its alternatives →
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All-in-one sound level meter, dosimeter & frequency analyzer
2024 · decibelmeterultra.com · its alternatives →
- 6IV
2023 · webfft.net · its alternatives →
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Brewfather▲77Powerful and easy to use tool for your brewing needs
2019 · brewfather.app · its alternatives →
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Hi HN - My name is Andrew, and I'm a high school student. This is a write-up on StratoSpore, a payload I designed and launched to the stratosphere. The goal was to test if we could estimate physical altitude based on algae fluorescence (using a lightweight ML model trained on the sensor data). The blog post covers the full engineering mess/process, including: - The Hardware: Designing PCBs for the AS7263 spectral sensor and Pi Zero 2 W. -The biological altimeter: How I tried to correlate biological stress (fluorescence) with altitude. - The Communications: A custom lossy compression…
Nov 2025 · radi8.dev · its alternatives →
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Easily monitor and track your oral health and hydration
2015 · indiegogo.com · its alternatives →
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CO₂ & Temperature monitor. Contribute to larsp/co2monitor development by creating an account on GitHub.
2018 · github.com · its alternatives →
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BreathalEyes▲85Test blood alcohol content via eye scanning on iPhone
2014 · apps.apple.com · its alternatives →
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Turn your audience’s energy into numbers
2025 · jzjon.gumroad.com · its alternatives →
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Bubblemon shows the current system load as a bubbling liquid. Available for the macOS Dock, Touch Bar and top-of-screen menu bar. System load visualization for human beings!
2020 · walles.github.io · its alternatives →
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Smart sensor that monitors your environment and air quality
2018 · its alternatives →
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An app that scans products to find allergens in seconds
2023 · alex0x47.github.io · its alternatives →
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Science and engineering experiments in your pocket
2018 · pslab.io · 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 →