Stay Alive ∙ Water Tracker vs DayZero
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stay Alive ∙ Water Tracker
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The water tracker that tells it like it is. STAY.ALIVE counts every drink: water, coffee, tea, milk and 25+ more, shows your total in a bold dot-matrix display, and turns red when you fall behind. No cartoon mascots. No guilt trips. Just a clear number, a goal built around your body, and reminders that call you by name: "JUST A LITTLE SHORT, QUEEN." EVERY DRINK COUNTS Your morning latte isn't nothing. STAY.ALIVE counts each drink for how much it really hydrates you: tea and black coffee at 90%, milky coffee at 110%, milk at 130%. Pick a drink from the dial, choose your mug, cup, can or bottle, drag to fill, and log. Water is always two taps. CAFFEINE, HANDLED See today's caffeine against your daily limit, how much is still in your system at bedtime, and how your week stacked up. Set your own limit and bedtime. Inform, never lecture. STAY ON PACE STAY.ALIVE knows how much you should have had by now. On track, everything stays calm. Falling behind, the whole app shifts red, and reminders nudge you before it's a problem — never while you sleep. ON YOUR LOCK SCREEN AND HOME SCREEN Live Activities and the Dynamic Island keep your total, pace and next nudge in view, in three styles. Dot-matrix Home Screen widgets — including Matrix Log and Caffeine — come in every size and every theme. LOOK BACK ANY TIME Swipe through past weeks and months, watch your streak grow, and fill in a drink you forgot. The month grid glows brighter the closer you got to your goal each day. APPLE HEALTH Two-way sync: drinks you log here appear in Apple Health, and water or caffeine from your Apple Watch or other apps counts here. MAKE IT YOURS Eleven themes named after drinks — from the free Classic look to Neon Soda, Midnight Tonic, Matcha, Macchiato, Cosmopolitan, Glacier Soda, Lychee Iced Tea, Mint Apple, Taro Milk Tea and Shaved Ice. Millilitres or ounces. A goal you set, based on your weight and activity. PRIVATE BY DESIGN No account, no sign-up. Your hydration data stays on your device. FREE AND PRO Logging water, your daily goal, reminders and streaks are free, forever. STAY.ALIVE Pro unlocks every drink, caffeine tracking, widgets, Live Activity styles, full history and past-day editing, and ten Pro themes. Choose monthly, yearly with a free trial, or a one-time lifetime unlock. STAY.ALIVE started because my fiancée kept getting headaches from forgetting to drink. Stay hydrated. Stay alive. Privacy Policy: https://stayalivewatertrackerprivacypolicy.my.canva.site/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
DayZero
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Quit drinking, smoking or vaping — and watch your life come back, one day at a time. DayZero is the private companion for your quit journey. No account, no ads, no cloud: everything you track stays on your device. 100% offline. • DAY COUNTER — see every hour and day you've been free, from the moment you start. • MONEY SAVED — set what the habit cost you per day and watch the savings grow. • RECOVERY TIMELINE — see how your body heals over time (blood pressure, lungs, liver, sleep…). • DAILY CHECK-IN — 10 seconds: mood, craving level and triggers. Trends appear within days. • CRAVING SOS — a guided 4-4-6 breathing exercise with calming audio, your own reasons, and a 90-second distraction game to ride out the urge. • MILESTONES — celebrate 1 hour, 1 day, 1 week, 1 month… and the money milestones along the way. • RELAPSE-SAFE — one slip doesn't erase your progress. Restart the counter or keep going — your choice. • EXPORT — your data is yours: export it as JSON anytime. WHY DAYZERO • 100% private: no account, no analytics, no tracking. Your data never leaves your device. • Works offline, forever. • 12 languages, one honest price. Free tier tracks 2 habits with core stats — no ads, ever. Premium unlocks unlimited habits, custom themes fonts and colors, the complete breathing audio library and more. DayZero provides motivation and tracking only — it is not medical advice. For severe withdrawal, please consult a doctor. Privacy policy: https://xg190217-hub.github.io/dayzero/privacy Terms of use: https://xg190217-hub.github.io/dayzero/terms
Screenshots
Verdict
The clearest difference is iOS requirement: DayZero at 15.0 against Stay Alive ∙ Water Tracker's 26.5. On price, ads, in-app purchases and device support 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. Stay Alive ∙ Water Tracker sells 3 in-app purchases, starting at $2.99 per month and DayZero sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.
| Parameter | Stay Alive ∙ Water Tracker | DayZero |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 26.5 | 15.0 — better |
| Further details — not scored | ||
| Size | 28 MB | 30 MB |
| Age rating | 4+ | 12+ |
| Developer | Jeremy Sariaatmadja | 振杰 高 |
In-app purchases
Stay Alive ∙ Water Tracker
- STAY.ALIVE Pro Monthly$2.991 Month
- STAY.ALIVE Pro (Annual)3 Days trial$12.991 Year
- STAY.ALIVE Pro Lifetime$29.99
DayZero
- DayZero Premium Weekly$2.997 Days
- DayZero Premium Monthly$5.991 Month
- DayZero Premium Yearly7 Days trial$39.991 Year
Questions
Is Stay Alive ∙ Water Tracker free?
Is DayZero free?
Do Stay Alive ∙ Water Tracker or DayZero have ads?
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