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AlexWater reminder app where your hydration keeps a virtual cactus alive. Drink water — it thrives. Forget — it wilts. Personalized daily goal based on your weight, activity, and climate. Gentle reminders, one-tap logging, daily analytics. Warm cozy design that makes you actually want to open it. No account, works offline. Built by a solo dev who kept forgetting to drink water.
Top comment
Hey PH — I'm Radhan, solo indie dev. I built Cactus because I have the hydration habits of a desert lizard. The problem I'd go entire mornings without a sip of water, then wonder why I had a headache by 2pm. I tried every water tracker on the App Store. They all felt the same — clinical blue interfaces, aggressive notifications, guilt-tripping dashboards. Drinking water should feel good, not stressful. So I thought: what if instead of tracking water for myself, I was keeping something alive? How it works When you open Cactus, you see your cactus. Its mood reflects your hydration: Dry (0-24%) — wilting, it needs you Thirsty (25-49%) — hanging in there Neutral (50-74%) — doing okay Happy (75-99%) — thriving, almost there Thriving (100%) — full bloom, you did it Your daily goal is calculated from your weight, activity level, and climate (weight × 33ml × activity × climate multipliers). Reminders are gentle nudges from your cactus, not alarm-level push notifications. Why it looks the way it does Most health apps use dark, serious themes because health is serious. But habits stick when they're fun. Cactus uses a light cream palette with soft greens and water blues. It feels like opening a plant care app, not a hospital dashboard. That warmth is intentional — it makes you want to come back. What it's not No social features. No leaderboards. No premium subscription. No account. No cloud sync. Your cactus lives on your phone and nowhere else. Just a free app with a couple non-intrusive ads. I'm not building a water empire, just a useful little thing that makes people drink more water. I've been using it for months and I actually drink water consistently for the first time in my life. Turns out I care more about a pixel cactus than my own wellbeing. Make of that what you will. React Native + Expo. 11 languages. Everything runs locally. I do design, code, marketing, support — all solo. How's your cactus doing?
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About Cactus on Product Hunt
“Grow a cactus by drinking water. Stay hydrated, stay alive.”
Cactus was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #155 on the daily leaderboard. Water reminder app where your hydration keeps a virtual cactus alive. Drink water — it thrives. Forget — it wilts. Personalized daily goal based on your weight, activity, and climate. Gentle reminders, one-tap logging, daily analytics. Warm cozy design that makes you actually want to open it. No account, works offline. Built by a solo dev who kept forgetting to drink water.
Cactus was featured in Android (57.1k followers), Drinking (4.6k followers), Dieting (405 followers) and Health (6.3k followers) on Product Hunt. Together, these topics include over 45.3k products, making this a competitive space to launch in.
Who hunted Cactus?
Cactus was hunted by Alex. 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.
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