Dehydrate vs Ondaya
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Dehydrate
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Drinking water shouldn't feel like a chore. Dehydrate turns hydration into the most delightful tap of your day. MEET DEWY Your personal water droplet fills up as you drink โ sleepy in the morning, beaming by lunch, and throwing a full-on confetti party when you hit your goal. Keep Dewy happy, keep yourself hydrated. LOG A SIP IN ONE TAP Glass, bottle, or big gulp โ one bouncy tap and you're done. Need something in between? The custom slider has you covered. Oops-proof too: every sip comes with a quick Undo. BUILD YOUR STREAK Hit your goal, grow your flame. Weekly charts and goals-hit counts show your progress without ever feeling like homework. MAKE IT YOURS Dress Dewy in five colors, set your own daily goal, and toggle confetti and gentle sip reminders โ celebrations on your terms. No accounts. No ads. Just you, Dewy, and a healthy habit that finally sticks. Download Dehydrate and make every sip count.
Ondaya
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Drink enough water every day โ without having to think about it. Ondaya reminds you to drink at the right moment, from the time you wake up to the time you go to bed, and stops as soon as your daily goal is reached. No nagging, and never a notification in the middle of the night. Your goal is calculated from your weight, and you can change it whenever you like. One tap logs a glass: 150, 250, 350, 500 ml, or any amount you choose. WHAT YOU GET โข Smart reminders, only between your wake-up time and bedtime โข Reminders stop automatically once you reach your goal โข One-tap logging, with four quick amounts โข A tank that fills as you drink โ your whole day at a glance โข 7-day history, weekly average and goal streak โข Millilitres or ounces โข Light and dark theme โข 12 languages โข Works completely offline โ no account, no sign-up WHY IT MATTERS Mild dehydration is enough to blunt concentration, bring on fatigue and trigger headaches. The difficult part was never knowing that you should drink โ it is remembering to do it, hour after hour. That is the one job Ondaya does. PRIVACY Everything stays on your phone. No account, no sign-up, nothing to hand over. Free, supported by ads.
Screenshots
Verdict
The clearest difference is ads: Dehydrate at none against Ondaya's shown. Ondaya's advantage is iOS requirement (13.0 vs 18.2). On price, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Dehydrate | Ondaya |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 16 months | โ |
| Ads | No โ better | Yes |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPod โ better |
| Requires iOS | 18.2 | 13.0 โ better |
| Further details โ not scored | ||
| Size | 4 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Nico Liu | HAYAT QADECH |
In-app purchases
Dehydrate
No in-app purchases
Ondaya
No in-app purchases







