Health Assistant Link vs Hydro Dots
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Health Assistant Link
This app securely syncs your health data directly from your iPhone to your Home Assistant instance. It offers background synchronization and integrates with iOS Shortcuts for custom automations. Enjoy private health data management without relying on third-party cloud services.
- Background health data sync
- Direct iPhone to Home Assistant sync
- No cloud or third-party storage
- iOS Shortcuts integration
- Private health data management
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Health Assistant Link is the advanced Apple Health bridge for Home Assistant: history, sleep, workouts, medications and two-way sync. Fast, private syncing, no cloud required. More Than Current Values Sync over 80 Apple Health metrics with historical backfill that helps recover gaps and preserve when readings actually occurred. Complete Sleep Data Bring sleep duration, stages, asleep time, wake time and detailed sleep history into Home Assistant. Workouts and Medications Sync Apple Workouts with their key details, along with medication schedules and adherence data. Two-Way Sync Send supported health data from Apple Health to Home Assistant—or write compatible Home Assistant sensor values back to Apple Health. Designed to Stay Closed Automatic background syncing keeps your data updated throughout the day, including while your phone is locked when paired with the Apple Watch app Shortcuts Included Trigger a sync using the included iOS Shortcuts or incorporate Health Assistant Link into your own automations. Private by Design Your health data travels directly between your iPhone and Home Assistant. No accounts, third-party servers or cloud storage required. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Hydro Dots
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Hydro Dots is a water tracker that draws your day as a rising water level, one dot at a time. Tap once to log a cup, a mug, or a bottle. The water climbs. That is the whole idea. WHAT IT DOES • One tap to log — your usual sizes sit on the first screen. Custom amounts and drink types are one tap further. • Not every drink counts the same — coffee, tea, juice and the rest are converted by their hydration index, so what you log is what your body keeps. • A goal that follows your day — body weight, temperature, humidity, UV and activity shape the target. It settles once, the first time you open the app each day, so it never moves under you. • Reminders that know where you stand — each one carries how much you have had and the pace that would get you there. • History and recap — a week of bars, a month of dots, a streak counter, and the month's total turned into things you can picture: bottles, kettles, sugar you avoided. • Widgets — log from the home screen or the lock screen without opening the app. A month of dots fits on the large one. • Shortcuts and Siri — log a drink or ask what you have had today, hands free. Every action is available to build your own routines. • Apple Health — records can be written to Health, and removing a record takes it back out. PRO A one-time purchase. No subscription. • No ads • Every theme — seven palettes, from cream LCD to OLED black • iCloud sync — records and drinks across your devices PRIVACY What you drink stays on your device. Your records are not sent anywhere unless you turn on iCloud sync, and then they go to your own iCloud, not to us.
Screenshots
Verdict
The clearest difference is ads: Health Assistant Link at none against Hydro Dots's shown. Health Assistant Link also leads on iOS requirement (17.6 vs 26.0). Hydro Dots's advantage is update cadence (daily vs monthly). On price, in-app purchases and device support 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. Health Assistant Link sells 1 in-app purchase, starting at $1.99 per month and Hydro Dots sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Health Assistant Link ships an update monthly, Hydro Dots daily. The most recent releases landed on October 10, 2026 and October 31, 2026 respectively.
| Parameter | Health Assistant Link | Hydro Dots |
|---|---|---|
| Price | Free | Free |
| Rating | 2.4 (5 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Monthly | Daily — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | — |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Requires iOS | 17.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 11 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Greg Thomas | Kengo Tate |
In-app purchases
Health Assistant Link
- Monthly Subscription7 Days trial$1.991 Month
Hydro Dots
- A drop$0.99
- A glass$2.99
- A bottle$5.99
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- Pro — Founding Member$5.99
Questions
Is Health Assistant Link free?
Is Hydro Dots free?
Do Health Assistant Link or Hydro Dots have ads?
Which is updated more often, Health Assistant Link or Hydro Dots?
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