WaterTight vs Simple Fasting
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WaterTight
This app helps you monitor your daily water consumption with a simple interface. Set a daily goal, receive reminders, and view your hydration history over the past week.
- Track water intake
- Set daily hydration goals
- View 7-day intake graph
- Daily reminders and alerts
- Easy manual input
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Drinking enough water is hard to remember — WaterTight makes it effortless, and honestly a bit fun. Log a cup in one tap and watch your mascot fill with water as you drink. Build a daily streak, keep it alive with gentle reminders, and watch your progress in beautiful charts. FREE: • One-tap water logging with an animated mascot • Daily goal with live progress • Daily reminder • Weekly insights, streaks & achievements • Home and Lock Screen widgets — log without opening the app • One-tap logging from Control Center (iOS 18) PRO — subscription or one-time Lifetime unlock: • Personalized daily goal from your age, weight and gender • Log coffee, tea, juice, milk and more — with honest hydration counting • Custom cup sizes • Sync water and caffeine to Apple Health • Unlimited reminders • Full history, monthly & yearly charts, CSV export • App themes Yearly Pro includes a 7-day free trial. Payment is charged to your Apple ID account; subscriptions renew automatically unless cancelled at least 24 hours before the current period ends. Manage or cancel anytime in your App Store account settings. Terms of Use (EULA): https://sites.google.com/view/watertight/terms Privacy Policy: https://sites.google.com/view/watertight/privacy
Simple Fasting
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Build a consistent fasting routine without the clutter. Simple Fasting is a focused intermittent fasting timer for tracking both fasting and eating windows. Start with one tap, see your progress at a glance, and learn from your own rhythm over time. SIMPLE FASTING AND EATING TRACKING • Start and stop fasting or eating with one tap • Choose a daily fasting target from 8 to 24+ hours • Adjust start times and add periods you missed • Edit completed periods and review your history • Follow your day with a clear fasting and eating ring KEEP YOUR PROGRESS VISIBLE • Follow an active fast from your Lock Screen • See progress in the Dynamic Island • Add the Simple Fasting widget to your Home Screen • Receive helpful reminders and milestone notifications UNDERSTAND YOUR ROUTINE • Compare fasting and eating time across different periods • Discover your usual and longest fasting windows • See when your eating window typically starts and ends • Follow trends, completed windows, and consistency • Review your current streak, best streak, and tracked days STAY MOTIVATED—WITHOUT PRESSURE • Unlock achievements as you keep tracking • Build a streak through consistent daily use • Join an optional 7-day fasting challenge • Read gentle hints designed to support a sustainable routine PRIVATE AND FOCUSED No account is required. Your fasting and eating records are stored locally on your iPhone. Simple Fasting stays focused on your routine. There is no calorie counting, food logging, water tracking, complicated diet planning, or social feed. New users receive 24 hours of full access. Continued access requires a subscription. Available options and prices are shown before purchase. Simple Fasting is a tracking tool and does not provide medical advice. If fasting becomes uncomfortable, eat something. Consult a qualified healthcare professional before making significant changes to your eating routine. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
WaterTight and Simple Fasting are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. WaterTight sells 3 in-app purchases, starting at $1.99 per month and Simple Fasting sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.
WaterTight ships an update every 8 days, Simple Fasting weekly. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.
| Parameter | WaterTight | Simple Fasting |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 8 days | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free | — |
| Devices | iPhone | iPhone |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 12 MB | 72 MB |
| Age rating | 4+ | 4+ |
| Developer | A I K A T E K LTD | Oleksandr Kryzhanovskyi |
In-app purchases
WaterTight
- Pro Monthly$1.991 Month
- Pro Yearly7 Days trial$8.991 Year
- WaterTight Pro (Lifetime)$16.99
Simple Fasting
- Premium Weekly$4.997 Days
- Premium Yearly3 Days trial$19.991 Year









