This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
BioDecay is a high-precision pharmacokinetic modeling engine for iOS. Using dynamic compartmental models, it visualizes in real time how hydration, caffeine, and key supplements interact within your physiology. The app is free to use for hydration and caffeine tracking. A single in-app purchase unlocks advanced modeling and curves for protein, creatine, and magnesium. Features include real-time metabolic curves, dynamic bio-interactions, and PDF reporting.
Hi everyone!
When I’m not teaching history to my students, I spend my nights building native Apple. I'm the solo developer behind Takatoke Factory, and today I'm launching BioDecay for iOS.
This project started because I was tired of traditional health logs. Most apps just let you type numbers into a spreadsheet-like grid, but they don't tell you what is actually happening inside your body. I wanted to build something that could actively simulate and visualize human physiology.
BioDecay is a high-precision pharmacokinetic modeling engine that calculates and displays your metabolic absorption and decay curves in real time. It factors in variables like hydration levels, biological sex, ambient temperature, and habits. You can download the app and use it completely free to monitor your water and caffeine intake. If you want to dive deeper into your bio-interactions, a single in-app purchase unlocks the advanced engines for protein, creatine, and magnesium.
I work on regular updates to polish every detail, squash bugs, and gradually add new features based on your feedback.
I’d love to know your thoughts and suggestions. Thank you so much for supporting solo indie developers!
BioDecay was submitted on Product Hunt and earned 4 upvotes and 1 comments, placing #136 on the daily leaderboard. BioDecay is a high-precision pharmacokinetic modeling engine for iOS. Using dynamic compartmental models, it visualizes in real time how hydration, caffeine, and key supplements interact within your physiology. The app is free to use for hydration and caffeine tracking. A single in-app purchase unlocks advanced modeling and curves for protein, creatine, and magnesium. Features include real-time metabolic curves, dynamic bio-interactions, and PDF reporting.
BioDecay was featured in Health & Fitness (82.8k followers), Productivity (653.8k followers) and Analytics (172.3k followers) on Product Hunt. Together, these topics include over 181.6k products, making this a competitive space to launch in.
Who hunted BioDecay?
BioDecay was hunted by José Gea. 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.
Want to see how BioDecay stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
José Gea