Topology3D vs Hydrator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Topology3D
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Topology3D revolutionizes the bespoke shoemaking experience. Using advanced 3D scanning technology, our app lets you create an accurate digital model of your foot from the comfort of your home. No need for in-person measurements – simply use your phone camera to capture the perfect fit
Hydrator
This app helps you effortlessly stay hydrated with personalized reminders and easy drink tracking. Set custom goals, monitor your progress, and sync with health platforms for a complete wellness experience.
- Personalized water goals
- Smart, adaptive reminders
- Easy logging for all beverages
- Streaks and badges for motivation
- Apple Health and Google Fit integration
- Distraction-free design
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Hydrator – The Smart Water Reminder and Hydration Tracker **KEY FEATURES** - Personalized daily water goals based on your weight, activity, and weather - Smart, non-intrusive reminders — specific times, custom intervals, or pace-based - Fast, one-tap water logging - Goals, friends & leaderboards to stay motivated - AI Assistant Integration (MCP): Connect Hydrator to AI assistants and agents over a standard Model Context Protocol (MCP) server - Apple Health Integration - Complete privacy - Clean, distraction-free design - No ads **WORKS ON EVERY DEVICE** The same app on iPhone, Android, and the web, with the same data everywhere. Change phones or open it on a laptop and nothing changes — history, goals, and reminders all come with you. **A LOT FOR FREE** Health sync, goals and streaks, friends and leaderboard, smart reminders, and AI assistant access are all free — the kind of thing many other hydration apps put behind a paywall. Optional Pro adds automatic weather, activity, and weight tracking. Hydrator is a modern, actively maintained app. Many water trackers were last updated years ago; Hydrator keeps current with the latest iOS releases and ships improvements regularly. Stay hydrated, energized, and on track. Free with optional Pro features. Terms & Conditions: https://hydrator.app/terms_and_conditions.html Privacy Policy: https://hydrator.app/privacy_policy.html
Screenshots
Verdict
The clearest difference is in-app purchases: Topology3D at none against Hydrator's 3. Hydrator's advantage is update cadence (every 5 days vs every 6 months). On price, ads, 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
Both are free to download. Hydrator sells 3 in-app purchases, starting at $0.99 per month. Topology3D asks for nothing beyond the download.
Topology3D ships an update every 6 months, Hydrator every 5 days. Both last shipped on October 30, 2026.
| Parameter | Topology3D | Hydrator |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.8 (4 ratings) — better |
| Positive reviews | — | 66.7% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 6 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 — better | 15.6 |
| Further details — not scored | ||
| Size | 33 MB | 81 MB |
| Age rating | 4+ | 17+ |
| Developer | Yazan Sharkia | Jonathan Terry |
In-app purchases
Topology3D
No in-app purchases
Hydrator
- Hydrator Pro - Monthly1 Month trial$0.991 Month
- Hydrator Pro - Yearly1 Month trial$9.991 Year
- Hydrator Pro Perpetual$19.99
