Expain vs Waterly Water Tracker
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Expain
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Tracking your pain is the first step to gain control over your pain. The Expain app lets you track and view your pain in an intuitive and simple way. To get started, select a body segment and enter how much it hurts. If you have pain in more than one segment, simply add more pain logs. If tracking your pain is not enough, use the Expain app to connect to the Expain Bluetooth Smart connected products. The app connects to Expain Change Neck & Shoulders, Expain Change Arm, Expain Activate Knee and Expain Relax Legs. The Expain Change products is biosensors that alert you with a gentle vibration when it detects a potential harmful muscle activity pattern.
Waterly Water Tracker
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Waterly helps you build a steady hydration routine without adding friction to your day. Set your daily goal, choose reminder intervals or fixed times, log drinks in one tap, and see your progress instantly. Whether you want a simple water reminder or a more flexible drink tracker, Waterly keeps everything clear and fast. Features: - Smart local reminders based on intervals or fixed times - Sleep-friendly do not disturb hours - Daily dashboard with progress, remaining amount, and next reminder - Quick add presets plus custom drink amounts - Water and beverage tracking with hydration factors - History with weekly and monthly charts - Streaks and badges to support consistency - Edit or delete past entries anytime - No account required - Data stored locally on your device Built for everyday habit tracking: - Flexible setup during onboarding - Optional automatic daily target - Support for ml and oz units - JSON export for your data - App language settings and notification controls Waterly is not a medical device and does not provide medical advice, diagnosis, or treatment.
Screenshots
Verdict
The clearest difference is ads: Expain at none against Waterly Water Tracker's shown. Expain also leads on iOS requirement (8.1 vs 16.4). Waterly Water Tracker's advantage is update cadence (every 2 months vs every 5 months). 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.
Expain ships an update every 5 months, Waterly Water Tracker every 2 months. The most recent releases landed on November 11, 2026 and October 31, 2026 respectively.
| Parameter | Expain | Waterly Water Tracker |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | Every 2 months โ better |
| Ads | No โ better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 8.1 โ better | 16.4 |
| Further details โ not scored | ||
| Size | 64 MB | 40 MB |
| Age rating | 17+ | 4+ |
| Developer | Expain AS | Claudio Fusillo |
In-app purchases
Expain
No in-app purchases
Waterly Water Tracker
No in-app purchases
Questions
Is Expain free?
Is Waterly Water Tracker free?
Do Expain or Waterly Water Tracker have ads?
Which is updated more often, Expain or Waterly Water Tracker?
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