Hydra vs HydraFill
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Hydra
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Hydra is a hydration tracker built around a single gesture: drag up anywhere on the home screen and watch the water rise to where you logged. Most water apps use a generic 2L target. Hydra calculates yours from your weight, sex, activity level, and climate — then bumps it up automatically when you take creatine. Because creatine pulls water into your muscle cells, you actually need more. DESIGNED AROUND THE WAY YOU DRINK • Drag to pour — pan up anywhere on the home screen • Quick-add presets for a glass (250ml), bottle (500ml), or shaker (700ml) • Custom amounts for anything in between • A live water-level background that fills as you progress CREATINE-AWARE TARGETS • One-tap daily creatine pill • Target adjusts automatically: +500ml per 5g dose • Personalized baseline from weight, sex, activity, and climate STREAKS THAT FORGIVE A BAD DAY • Daily streak counter • Personal best tracking • One streak freeze per week • Milestone glow effects every 7 days PRIVATE BY DEFAULT • No account, no login, no email • No analytics, no trackers, no ads • Everything stays on your device Drag to pour. Hit your goal. Build the streak. --- SUBSCRIPTION DETAILS Hydra Pro is available as an auto-renewing subscription: • Hydra Pro Monthly — £4.99 / month • Hydra Pro Annual — £29.99 / year (save 50%) Prices may vary by region. Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current period. Payment is charged to your Apple ID at confirmation of purchase. Manage or cancel any time in your Apple ID account settings. Privacy Policy: https://polar-blanket-f7a.notion.site/Hydra-Privacy-Policy-34f767e65704814b89b5fc807bb09a3d Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
HydraFill
Visualize your daily water intake with an animated body silhouette that fills up with each logged drink. Track various beverages, set personalized goals, and receive custom reminders to stay hydrated. Share your progress with engaging visualizations.
- Animated body visualization of hydration
- Log 18+ drink types with custom icons
- Set personalized daily hydration goals
- Customizable drink reminders
- Build daily streaks and earn badges
- Sync with Apple Health
- Track caffeine intake
- Home screen widget for quick logging
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HydraFill—Hydration Tracker App See Your Hydration Come to Life Most hydration tracker apps show you a number. HydraFill shows you your body. Watch every drink fill your body silhouette with animated liquid in real-time. Water bubbles from your feet, tea layers across your waist, and coffee settles at your chest. Your hydration has never looked like this before. WHAT YOU CAN DO • Log drinks - Track water, coffee, tea, juice and 15+ drink types • Watch body fill - Animated liquid fills your silhouette in real-time • Set daily goals - Hydration targets based on your preferences • Get reminders - Custom drink reminders keep you hydrated • Build streaks • Share on Instagram - Export body visualization as interactive stories • Sync Apple Health - Your data syncs to your health records • Track caffeine - Monitor daily intake and health guidelines KEY FEATURES Smart Daily Goals Set personal hydration targets. See progress with percentage displays and remaining amounts. Body Visualization Colored liquid layers rise as you log drinks. Each drink has its own color and texture with realistic wave animations. Hydration Tracker Log 18+ drink types with custom icons and colors. Color-coded layers show exactly what you drank and when. Build Daily Streaks Daily streak tracking builds healthy habits. Earn badges and personal best records. Caffeine Tracker Track daily caffeine intake from coffee, tea, and energy drinks. Visual indicator shows your status. Learn more in Help & Support. Drink Reminders (Pro) Custom notifications remind you to drink throughout the day. Home Screen Widget Log +250ml water from your home screen. See daily progress at a glance. Apple HealthKit Integration Your hydration data syncs automatically to Apple Health. One source of truth for your wellness. Share Your Story Export body visualization as an Instagram Story sticker or animated video. Detailed Insights Daily, weekly, and monthly breakdowns show your hydration patterns and progress. HEALTH INFORMATION This app provides general wellness information. For detailed health guidelines and sources, visit: → Profile > Help & Support in the app → https://hydrafill.fit Hydration and caffeine information is based on general wellness guidelines. Always consult with a healthcare professional for personalized medical advice. Pro ($1.99/month): All 18+ drinks unlocked forever Zero ads — ever Full insights & analytics Custom drink reminders Priority support WHY HYDRAFILL? HydraFill is more than a hydration tracker—it's a visual wellness companion. Every drink you log creates satisfaction. Watching your body fill up makes health tracking engaging and fun. Whether you're building a healthier routine or optimizing hydration for fitness—HydraFill makes wellness visible and enjoyable. PRIVACY & SECURITY Your data is yours. Industry-standard encryption. No tracking, no selling data to third parties. Built by a developer passionate about health, design, and beautiful user experiences. Download HydraFill—the best hydration tracker for Apple devices. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: HydraFill at none against Hydra's 2. Hydra's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Hydra sells 2 in-app purchases, starting at $6.99 per month. HydraFill asks for nothing beyond the download.
| Parameter | Hydra | HydraFill |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | — | Every 2 days |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 41 MB | 102 MB |
| Age rating | 12+ | 4+ |
| Developer | Ryan Creary | Parthkumar Saliya |
In-app purchases
Hydra
- Hydra Pro Monthly3 Days trial$6.991 Month
- Hydra Pro Annual3 Days trial$39.991 Year
HydraFill
No in-app purchases









