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WattFlow
Real battery-side watts while your phone charges
WattFlow shows the real watts flowing into or out of your phone's battery, wired or wireless, via Android's BatteryManager API. Live wattage, peak tracking, a 60s graph, a charging benchmark, and home screen widgets — with tablet/landscape support. No ads, no analytics. Base app is free on Play Store; $2.99 IAP unlocks background history, energy ledger, sleep drain, and battery health tracking. Comfortable sideloading it yourself? Same features, free and open source on GitHub.
Hey PH — built this after wondering why no phone just tells you the watts during charging. Turned into a deep dive on BatteryManager quirks across OEMs. Happy to answer anything on the power math, or what's next on the roadmap. First paid sale landed this week 🎉
About WattFlow on Product Hunt
“Real battery-side watts while your phone charges”
WattFlow was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #140 on the daily leaderboard. WattFlow shows the real watts flowing into or out of your phone's battery, wired or wireless, via Android's BatteryManager API. Live wattage, peak tracking, a 60s graph, a charging benchmark, and home screen widgets — with tablet/landscape support. No ads, no analytics. Base app is free on Play Store; $2.99 IAP unlocks background history, energy ledger, sleep drain, and battery health tracking. Comfortable sideloading it yourself? Same features, free and open source on GitHub.
On the analytics side, WattFlow competes within Android, Productivity, Open Source and GitHub — topics that collectively have 827.9k followers on Product Hunt. The dashboard above tracks how WattFlow performed against the three products that launched closest to it on the same day.
Who hunted WattFlow?
WattFlow was hunted by William Wang. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of WattFlow including community comment highlights and product details, visit the product overview.
William Wang