Hydra vs Creatine Jotter
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/
Creatine Jotter
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Creatine Jotter is a focused iPhone app for planning creatine, logging doses, and building a consistent routine. PLAN AROUND YOU Choose a loading or maintenance path, start with a weight-informed suggestion, and adjust the amounts to fit your routine. LOG IN A TAP Record a dose quickly, undo mistakes, or add an entry to an earlier day. Calendar history makes your routine easy to review. SEE CONSISTENCY, NOT FALSE PRECISION Follow adherence, streaks, and an evidence-calibrated loading progress guide based on published cohort averages and your logs. It is a model, not a direct measurement of muscle creatine. KEEP HYDRATION VISIBLE Track water with familiar cup and bottle sizes, set a custom target, or use the app’s automatic daily goal. REMINDERS THAT FIT Use simple daily reminders or build a schedule that changes across the week. LEARN THE WHY Read short, evidence-based explainers with links to published sources. No account required. Optional iCloud sync keeps your plan and dose history available across your Apple devices. Creatine Jotter is educational and supportive. It is not medical advice and does not diagnose, treat, cure, or prevent any condition.
Screenshots
Verdict
The clearest difference is in-app purchases: Creatine Jotter at none against Hydra's 2. Hydra's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.0). On price and ads 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. Creatine Jotter asks for nothing beyond the download.
| Parameter | Hydra | Creatine Jotter |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 18.0 |
| Further details — not scored | ||
| Size | 41 MB | 8 MB |
| Age rating | 12+ | 4+ |
| Developer | Ryan Creary | Jack Barrable |
In-app purchases
Hydra
- Hydra Pro Monthly3 Days trial$6.991 Month
- Hydra Pro Annual3 Days trial$39.991 Year
Creatine Jotter
No in-app purchases








