Alternatives
Products that do what GWFlowAI does
Check groundwater level before you lock a property
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Hi HN, I'm developing an open-source water meter for Home Assistant and thought the HN community might be interested. I've been using some version of it after a few costly toilet leaks that my city meter missed. Recently, I decided to polish it up so others could use it. It might also function as a gas meter reader (https://youtu.be/9Dso4EBAoiE), but this is still experimental. The device runs on 3 AA batteries and utilizes an ESP32-S3. It works by measuring the spinning magnet inside the brass housing. It stays in deep sleep until it needs to transmit usage or leak…
2023 · hackaday.io
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Hey everyone, I build a Chrome Extension for real estate investors to be able to easily calculate the cash flow of a rental property right within Zillow. As an aspiring real estate investor, I found spreadsheets and proprietary online calculators like Bigger Pockets to be complicated or slow. With Homescope, you can bring this within your workflow and estimate your operating expenses instantly.
2022 · homescope.io
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Hi HN, I built *Sightline*, a Shodan-style search engine for *physical-world infrastructure*. Shodan makes it easy to explore exposed internet services. Sightline applies the same idea to the real world, using OpenStreetMap as the data source. You can search things like: * “telecom towers in karnataka” * “power plants near mumbai” * “data centers in paris france” or use structured queries: * `type:telecom operator:airtel region:karnataka` * `type:data_center operator:google` Sightline: * uses Overpass API for querying OSM features * uses Nominatim for resolving countries, regions, and cities…
Jan 2026 · github.com
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Enter any address. Get the full picture before you buy.
Mar 2026 · ground-truth.co
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Hello HN, I made a website where you can find toilets nearby on a map. It has data for Germany, Austria and Switzerland. I fetched the data from openstreetmap with overpass API, cleaned it up and stored it in a supabase DB. In case there was no address, i used nominatim API to geocode it. Feel free to ckeck it out. Happy for feedback. Jan
2025 · toilette-in-der-naehe.de
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Hey! I'm a solo developer having fun learning Go. I have a side hustle and wanted to implement currency localization. I could use existing IP databases, but hosting on serverless is slow. So I built my own. I was surprised how fun it can be to use Go, and it's fast. Thankfully, Go's speed makes up for my dodgy code. Anyway, I'd love to get some feedback on my website/API. After a few weeks of testing and losing money on ads, I'm confident it's very reliable. This isn't a promo. It's basicly free (30k lookups/month), so there's no need to pay. Any advice or tips on how to grow and…
2024 · ipflare.io
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Postcode-level climate risk intelligence for every UK home
Jul 2026 · renovyntech.co.uk
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