Comparison

Oasis vs Fasting Timer & Hydration Log

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

Head to head
About

Oasis

Features
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Professional hydration management powered by artificial intelligence. Machine learning algorithms analyze your hydration patterns, lifestyle, and physiological data. Receive evidence-based recommendations calibrated to your individual profile. Scientifically designed protocols help establish sustainable hydration habits. Track consistency through objective metrics. Data visualization provides insights into consumption patterns. Monitor daily, weekly, and monthly trends. Analyze beverage composition and timing distribution. Personalized advice based on physiological parameters. Optimal hydration schedules aligned with your circadian rhythm and activity patterns. Adaptive notifications at optimal times based on your behavioral patterns. Customize frequency and timing. Track measurable improvements in hydration compliance. Set goals based on WHO guidelines. Monitor long-term trends. Professional-grade hydration management committed to optimal health.

About

Fasting Timer & Hydration Log

Features
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An intermittent fasting timer that tells you exactly where you are: hours elapsed, hours left, and which metabolic stage your body just entered. Most fasting apps stop at a countdown. This one draws the whole fast on a stage timeline โ€” fed state at 0h, glycogen use at 4h, fat burning at 8h, ketosis at 12h, autophagy at 16h, deep ketosis at 24h โ€” so the number on screen finally means something. Underneath it sits a hydration log, because water is what makes the last four hours bearable, and a Learn library that answers the questions every beginner hits in week one. WHAT YOU GET - Know your fasting window at a glance: a live ring timer with hours elapsed, time remaining and the exact clock time your eating window opens - Follow your body, not just the clock โ€” a metabolic stage timeline that fills in as you pass 4h, 8h, 12h, 16h and 24h - Start in two taps with 16:8, 18:6, 20:4 or OMAD 23:1, and get a completion notification the moment you hit your goal - Hit your water target every day โ€” a 250 / 500 / 750 ml quick-add, a custom amount, an adjustable daily goal and a progress ring for today - See whether it is working: total fasts, average length, longest fast, a consecutive-day streak and a bar chart of your last ten fasts - Close each fast honestly โ€” rate how it felt and your energy level from 1 to 5, then browse the full history of every fast you finished PERFECT FOR - Beginners starting 16:8 who want to know what is happening inside the fast, not just when it ends - OMAD and 20:4 fasters chasing longer ketosis and autophagy windows - Anyone who keeps forgetting to drink water once meals disappear from the day - People who quit fasting before because the hours felt pointless and invisible WHY NOT JUST USE A KITCHEN TIMER? A timer tells you 6:42 is left. It cannot tell you that you crossed into fat burning two hours ago, when your eating window opens tomorrow, how long your streak is, or whether last week's fasts were actually longer than this week's. That context is the difference between counting down and building a habit. PRIVACY Everything stays on your iPhone. No account, no sign-up, no servers โ€” your fasts, water logs and notes are stored on the device and are never uploaded. FULL ACCESS This is a paid app: one plan unlocks everything โ€” all four fasting protocols, the live timer and stage timeline, unlimited history, insights and charts, the hydration log and the full Learn library. Choose weekly, yearly, or a one-time lifetime purchase. No ads at any tier. This app is a fasting timer and hydration log for general wellness, not medical advice. Talk to a doctor before fasting, especially if you are pregnant, diabetic or managing a health condition. Pick 16:8, tap Start, and watch your first stage light up tonight. Terms of Use (EULA): https://web-levi.web.app/terms Privacy Policy: https://web-levi.web.app/privacy-policy Questions? tphuc.work@gmail.com

Screenshots

Oasis4 screens
Fasting Timer & Hydration Log4 screens

Verdict

The call

Oasis and Fasting Timer & Hydration Log are too close to call on the numbers: across 5 compared parameters โ€” price, ads, in-app purchases and device support among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

ScorecardNo meaningful differences
Oasis versus Fasting Timer & Hydration Log: the parameters behind the verdict, then further details
ParameterOasisFasting Timer & Hydration Log
PriceFreeFree
Update frequencyโ€”Every 5 weeks
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS16.0 โ€” better17.0
Further details โ€” not scored
Size43 MB5 MB
Age rating12+4+
DeveloperAndrei PitunouPhuc Pham

In-app purchases

None

Oasis

No in-app purchases

None

Fasting Timer & Hydration Log

No in-app purchases

Questions

Is Oasis free?
Oasis is free to download, with no in-app purchases.
Is Fasting Timer & Hydration Log free?
Fasting Timer & Hydration Log is free to download, with no in-app purchases.
Do Oasis or Fasting Timer & Hydration Log have ads?
Neither Oasis nor Fasting Timer & Hydration Log shows ads.

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