Water Drink vs One Thing
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Water Drink
This app helps you track your daily water intake and reminds you to drink water at appropriate times. It calculates your personalized hydration goals based on your gender and weight, and allows you to monitor your progress over time with charts and achievements.
- Personalized daily water goals
- Intelligent drinking reminders
- Track water intake history
- Unlock achievements
- Weekly, monthly, and yearly charts
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Water Drink reminder is an application, whose main function is to help us maintain the needed water supplement and timely drinking water reminder. The user only needs to select the gender and enter the weight figure, which will help you calculate how much water you should drink every day. You can also track the history of drinking water, achieve your daily goals, unlock your achievements, and many other useful functions... Drinking water reminders will help you develop healthy physical habits. Main features: 1.Easy to use, beautiful interface. 2.According to gender, weight will let you know how much water you should drink every day. 3.The amount of water can be selected each time. 4.Intelligent reminder: Sleep in time mode, so you won't be reminded to drink water. 5.Water trackers by week, month and year in the chart
One Thing
This app helps users overcome overwhelm from long to-do lists by focusing on a single task at a time. It offers features like breaking down tasks, gentle reminders, and a calm widget, all designed with zero shame and complete privacy.
- One task at a time focus
- Task breakdown into smaller steps
- Zero shame design with no streaks or penalties
- Gentle, optional reminders
- Calm home and lock screen widget
- Private by design, no data collection
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One Thing is a deliberately tiny task app for anyone who freezes in front of a long to-do list — especially ADHD brains. Instead of a wall of overdue items, it shows you exactly ONE thing to do right now, with a single big "Done" button. That's it. Come back after two minutes or two hundred days, and the screen looks the same. No streaks to break. No red badges. No shame. WHY ONE THING IS DIFFERENT • One task at a time — Your whole list is real, but you only ever see the next thing. Less overwhelm, more starting. • Break it down — When the one thing still feels too big to begin, tap "Break it down" and split it into tiny steps. The first small step becomes your new "right now." Momentum, not pressure. • Zero shame by design — No streaks, no penalties, no guilt-red badges. Miss a day or a month; nothing breaks. Pick up whenever you're ready. • Gentle reminders — Optional, fully under your control, with a soft chime instead of a jarring alarm. They never fire when your list is clear — the app won't nag you about nothing. • A calm widget — See your one thing on the Home Screen or Lock Screen, and check it off without even opening the app. • A little celebration — Finishing feels good. A quiet, rotating celebration marks each "Done." PRIVATE BY DESIGN One Thing collects no data — none. No account, no tracking, no analytics, no servers. Everything you write stays on your device. Privacy isn't a feature here; it's the foundation. Do the one thing. Breathe. That's enough.
Screenshots
Verdict
The clearest difference is rating: Water Drink at 4.4 against One Thing's 3.0. Water Drink also leads on ratings volume (5 vs 1) and iOS requirement (13.0 vs 17.6). One Thing's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, 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. Neither carries in-app purchases, so what you see is what you pay.
Water Drink holds the better App Store score, 4.4 against 3.0. That said, the two scores are not equally well evidenced: Water Drink has 5 ratings behind it against 1, so its average is the more settled of the two.
| Parameter | Water Drink | One Thing |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (5 ratings) — better | 3.0 (1 ratings) |
| Number of ratings | 5 — better | 1 |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 18 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | ByFish | 斌 华 |
In-app purchases
Water Drink
No in-app purchases
One Thing
No in-app purchases









