Comparison

Hydro Dots vs Rouge

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Hydro Dots

Features
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Hydro Dots is a water tracker that draws your day as a rising water level, one dot at a time. Tap once to log a cup, a mug, or a bottle. The water climbs. That is the whole idea. WHAT IT DOES โ€ข One tap to log โ€” your usual sizes sit on the first screen. Custom amounts and drink types are one tap further. โ€ข Not every drink counts the same โ€” coffee, tea, juice and the rest are converted by their hydration index, so what you log is what your body keeps. โ€ข A goal that follows your day โ€” body weight, temperature, humidity, UV and activity shape the target. It settles once, the first time you open the app each day, so it never moves under you. โ€ข Reminders that know where you stand โ€” each one carries how much you have had and the pace that would get you there. โ€ข History and recap โ€” a week of bars, a month of dots, a streak counter, and the month's total turned into things you can picture: bottles, kettles, sugar you avoided. โ€ข Widgets โ€” log from the home screen or the lock screen without opening the app. A month of dots fits on the large one. โ€ข Shortcuts and Siri โ€” log a drink or ask what you have had today, hands free. Every action is available to build your own routines. โ€ข Apple Health โ€” records can be written to Health, and removing a record takes it back out. PRO A one-time purchase. No subscription. โ€ข No ads โ€ข Every theme โ€” seven palettes, from cream LCD to OLED black โ€ข iCloud sync โ€” records and drinks across your devices PRIVACY What you drink stays on your device. Your records are not sent anywhere unless you turn on iCloud sync, and then they go to your own iCloud, not to us.

About

Rouge

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Rouge is a period and fertility tracker built on one simple idea: your body's data is yours, and yours alone. Log your period, symptoms, mood, and flow in seconds. See clear, honest predictions for your next period and fertile window. Understand your cycle with plain-language insights that explain what your patterns usually mean: no jargon, no judgment, no clutter. WHY ROUGE โ–ธ Your health data never leaves your device. There's no account, no login, and no company server holding your cycle dates, symptoms, or notes. It's private by design, not by policy: we simply never receive it. โ–ธ User-first. Built for everyday realities from day one: data-light, works fully offline, and designed with users in mind, not bolted on as an afterthought. โ–ธ A warm, calm design. Soft, rounded, and easy on the eyes: a tracker that feels personal, not clinical. WHAT'S FREE Period and symptom logging, your calendar, core cycle and fertile-window predictions, reminders, and full data export or erase, all free, always. No trial required, no feature countdown. WHAT'S IN PREMIUM Go deeper: advanced insights and symptom-pattern trends, printable and shareable cycle reports, and fine-tuned reminder controls. Every price is shown clearly before you pay: monthly, annual, or pay once and own it for life. No "unlock everything" vagueness, no hidden tiers. Try Premium free for 7 days on the annual plan. A NOTE ON WHAT THIS APP IS Rouge is a cycle tracking aid. It is not a medical device, does not diagnose or treat any condition, and is not a form of contraception or birth control. Predictions are estimates based on the data you log, not guarantees, and confidence is shown honestly, including when your cycle is irregular. Always talk to a qualified healthcare provider for medical advice. Track your cycle. Keep your privacy. Rouge: built for you, built for ease, built for privacy. SUBSCRIPTION AND TERMS Rouge Premium is available as a monthly or annual auto-renewable subscription, or as a one-time lifetime purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Payment is charged to your Apple Account at confirmation of purchase, and you can manage or cancel your subscription in your Apple Account settings. Any unused portion of a free trial is forfeited when you buy a subscription. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Rouge Terms of Use: https://lischedynamics.com/apps/rouge/terms Privacy Policy: https://lischedynamics.com/apps/rouge/privacy

Screenshots

Hydro Dots4 screens
Rouge4 screens

Verdict

The call

The clearest difference is ads: Rouge at none against Hydro Dots's shown. Rouge also leads on iOS requirement (16.4 vs 26.0). Hydro Dots's advantage is update cadence (daily vs weekly). 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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Hydro Dots sells 4 one-off in-app purchases and Rouge sells 4 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Hydro Dots ships an update daily, Rouge weekly. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

Scorecard3 real differences ยท 3 level
Hydro Dots versus Rouge: the parameters behind the verdict, then further details
ParameterHydro DotsRouge
PriceFreeFree
Update frequencyDaily โ€” betterWeekly
AdsYesNo โ€” better
In-app purchasesYesYes
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS26.016.4 โ€” better
Further details โ€” not scored
Size43 MB67 MB
Age rating4+12+
DeveloperKengo TateLische Dynamics

In-app purchases

4 purchases

Hydro Dots

One-time4
  • A drop$0.99
  • A glass$2.99
  • A bottle$5.99
Show 1 more
  • Pro โ€” Founding Member$5.99
4 purchases

Rouge

Subscriptions2
  • Rouge Premium7 Days trial$8.991 Month
  • Rouge Premium Annual7 Days trial$39.991 Year
One-time2
  • Single Report$1.99
  • Rouge Lifetime$99.99

Questions

Is Hydro Dots free?
Hydro Dots is free to download, with in-app purchases available.
Is Rouge free?
Rouge is free to download, with in-app purchases available.
Do Hydro Dots or Rouge have ads?
Hydro Dots shows ads; Rouge does not.
Which is updated more often, Hydro Dots or Rouge?
Hydro Dots ships an update daily, and Rouge weekly. Most recently, Hydro Dots was updated on October 31, 2026 and Rouge on October 24, 2026.

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