Comparison

Hydration Tracker vs Ghost Runner G2

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

Head to head
About

Hydration Tracker

This gamified hydration tracker helps you build a healthy habit of drinking water regularly. It offers smart reminders, customizable goals based on your profile, and a collection of fun cat characters to keep you motivated. Track various beverages and view your progress with detailed logs and statistics.

Highlights
  • Gamified hydration tracking
  • Smart daily water reminders
  • Customizable goal calculator
  • Collection of cat characters
  • Log of 38 popular beverages
  • Detailed history and stats
  • Ad-free experience
Read full description

Liquid Cats is a gamified water tracker and water reminder for those who want to build a healthy habit and enjoy it along the way. Sometimes your body isn’t great at telling you exactly what it needs. So don’t wait until you’re thirsty — make hydration your new favorite habit and drink water regularly! Liquid Cats is more than just a water app — it's a fully-featured hydration tracker that turns staying hydrated into a game. Whether you're looking for a drink water reminder, a water intake tracker, or just a way to remember to drink water, this water drinking app makes it simple and enjoyable. See what we’ve got for you here: + Simple, quick, and easy-to-use interface — ideal for a free drink water app. + Smart daily water reminders to help you stay on track. + A growing collection of cat characters and motivational streaks — hydration meets fun! + Smart goal calculator that adjusts to your gender, weight, activity level, and even the climate you live in — a smarter water intake solution. + 38 popular beverages to choose from — water, coffee, tea, soda, or even alcohol — every drop matters. + Handy drink sizes including cups, bottles, mugs, and cans to match your real-life drinking habits. + Flexible oz/ml unit system and fully customizable drinks — ideal for any lifestyle. + Complete log calendar, stats, hydration streaks, and detailed history — your hydration reminder journal at your fingertips. + 100% ad-free experience — focus on your wellness journey without distractions. Liquid Cats is the perfect drink water app to keep your routine flowing. It’s a playful yet practical free water tracker app that helps you reach your daily goals. Our water reminder system encourages you to hydrate regularly, helping you feel better both physically and mentally. With Liquid Cats, your drink water reminder is not only functional but delightful. And yes, it's a water tracker free of ads and packed with features — your new favorite free water reminder app might just be this one. From our clever drink water reminder free system to the beautifully designed experience, this water drinking reminder is made for people who want to feel better, perform better, and live better — one glass at a time. Download this free water tracker app, and let Liquid Cats become your daily hydration tracker. Be hydrated and have fun doing it! ▼IMPORTANT NOTE: Liquid Cats is not a medical app. Your recommended daily goal is based on your gender, weight, activity level, and climate, following general hydration guidelines. This is not medical advice, diagnosis, or treatment. Please consult your doctor to determine if this goal is right for you.

About

Ghost Runner G2

Read full description

Ghost Runner tracks your GPS route in real-time and projects a ghost pacer from your last lap onto the glasses display. See exactly where you were and push to beat it — lap after lap. -- Requires the Ghost Runner Even Realites companion app & Smart Glasses running on the same phone -- Features: - Live GPS route map on glasses display - Automatic ghost pacer from your previous lap - Real-time stats: pace, distance, lap time, delta - Automatic lap detection with split times - Works fully offline — no WiFi or external server needed - Healthkit integration

Screenshots

Hydration Tracker4 screens
Ghost Runner G23 screens

Verdict

The call

The clearest difference is in-app purchases: Ghost Runner G2 at none against Hydration Tracker's 5. Ghost Runner G2 also leads on ads (none vs shown). Hydration Tracker's advantage is update cadence (weekly vs every 5 months). On price, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Hydration Tracker sells 5 in-app purchases, starting at $1.49 per 7 days. Ghost Runner G2 asks for nothing beyond the download.

UpkeepUpdate frequency

Hydration Tracker ships an update weekly, Ghost Runner G2 every 5 months. The most recent releases landed on October 13, 2026 and October 12, 2026 respectively.

Scorecard3 real differences · 7 level
Hydration Tracker versus Ghost Runner G2: the parameters behind the verdict, then further details
ParameterHydration TrackerGhost Runner G2
PriceFreeFree
Rating4.8 (25 ratings) — better—
Positive reviews87.5% of reviews—
Number of ratings25 — better—
Update frequencyWeekly — betterEvery 5 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone
Requires iOS18.017.0 — better
Further details — not scored
Size30 MB5 MB
Age rating12+4+
DeveloperNikita ZhukovAtlas Codes LTD

In-app purchases

5 purchases

Hydration Tracker

Subscriptions3
  • Weekly$1.497 Days
  • Monthly$2.991 Month
  • Annual$8.991 Year
One-time2
  • Cats friendFree
  • Lifetime$17.99
None

Ghost Runner G2

No in-app purchases

Questions

Is Hydration Tracker free?
Hydration Tracker is free to download, with in-app purchases available.
Is Ghost Runner G2 free?
Ghost Runner G2 is free to download, with no in-app purchases.
Do Hydration Tracker or Ghost Runner G2 have ads?
Hydration Tracker shows ads; Ghost Runner G2 does not.
Which is updated more often, Hydration Tracker or Ghost Runner G2?
Hydration Tracker ships an update weekly, and Ghost Runner G2 every 5 months. Most recently, Hydration Tracker was updated on October 13, 2026 and Ghost Runner G2 on October 12, 2026.

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