You're in a meeting. Both hands are full. You just finished a bottle of water — but logging it means unlocking your phone, finding the app, and tapping three times. By the time you do, you've already forgotten.
Voice commands solve this. With Suu's Siri Shortcuts integration, you can say "Hey Siri, log a glass of water" and it's done in under a second. No screen, no tap, no friction.
This guide covers exactly how to set it up — and introduces Suu's built-in voice system that works on Android too, without Siri.
Two Voice Systems in Suu
Suu offers two separate voice-based logging systems:
- Siri Shortcuts (iOS only): Uses Apple's native Siri integration. Works from your iPhone, Apple Watch, HomePod, AirPods, and CarPlay. Ideal for hands-free logging when Siri is enabled.
- In-app Voice Recognition (iOS + Android): Suu's own microphone-based system. No Siri required. Works on Android too. Assign custom trigger words to specific beverages and log by speaking into the app's mic.
Setting Up Siri Shortcuts for Water Tracking
Open Suu and go to Settings
Tap the profile icon in the top right, then tap Settings → Siri Shortcuts.
Choose an action to add
Create a shortcut: give it a name and a water amount (for example 250 ml), then tap "Add to Siri". You can keep up to 3 shortcuts. Adding water with Siri is part of Suu Premium.
Record your phrase
Siri will prompt you to record your trigger phrase. Keep it short and natural: "log a glass," "add 500ml," "water bottle."
Save and test
Tap Done. Say "Hey Siri [your phrase]" to test. Suu logs the water and confirms with a brief notification.
Add more shortcuts
Repeat for other amounts — up to 3 shortcuts, for example a glass (250 ml), a large glass (500 ml) and a bottle (750 ml). Siri adds water only; coffee, tea and other drinks are logged with the in-app voice commands below, which apply each drink's hydration factor.
Example Siri Commands You Can Set Up
💡 Best practice: Set up Siri shortcuts for your most common amounts — typically a glass (250 ml), a large glass (500 ml) and a bottle (750 ml). Use the in-app voice commands for coffee and tea.
Siri Shortcuts on Apple Watch
Once you've set up Siri Shortcuts on your iPhone, they automatically work on your Apple Watch too. Just raise your wrist, say "Hey Siri, add a glass of water," and Suu logs it without you ever touching your watch screen.
Combined with Suu's own Apple Watch app — which lets you add water from your wrist and log meals by voice — this gives you two effortless wrist-based logging options.
In-App Voice Commands (iOS + Android)
For Android users — or anyone who prefers not to use Siri — Suu has its own voice recognition system built in. Here's how it works:
- Go to Settings → Voice Commands in Suu.
- Assign a trigger word to each beverage. For example: "coffee" → 200ml coffee, "big water" → 500ml water, "morning" → 300ml water.
- Tap the microphone icon on the main screen (or from any logging screen).
- Speak your trigger word. Suu recognizes it and logs the assigned drink instantly.
This system is powered by Suu's integration with speech_to_text — a real-time microphone listener that works offline. Your logs are tagged with source: voice in your statistics, so you can see how much of your hydration you tracked hands-free.
Voice Tracking for Different Scenarios
During Workouts
Say "Hey Siri, add 500ml" while running or lifting. Siri and Suu handle it in the background. Apple Watch logs are even easier — raise wrist, speak.
While Driving
Siri Shortcuts work through CarPlay and your car's Siri integration. Finish a water bottle on the road? Log it hands-free without taking your eyes off the road.
At Your Desk
Siri on HomePod or your iPhone's always-on "Hey Siri" mode means you never need to pick up your phone. Just speak.
In the Kitchen
Cooking and drinking water? Use the in-app microphone — trigger word recognition means you don't even have to say "Hey Siri."
Why Voice Commands Improve Hydration Habits
Behavioral research shows that habit friction is the biggest barrier to consistency. Every extra step between "I just drank water" and "it's logged" is a step where people give up. Voice commands eliminate that friction entirely.
Studies on health tracking apps show that users who log water within 30 seconds of drinking are 3x more likely to maintain the habit after 30 days, compared to those who batch-log at the end of the day. Voice tracking makes instant logging the path of least resistance.
Start Logging Water Hands-Free Today
Download Suu free — in-app voice commands are free, and Siri shortcuts come with Premium.
Summary
Suu is the only water tracking app with both native Siri Shortcuts integration and a built-in voice recognition system for Android. Whether you're an iPhone user who wants to use Siri, or an Android user who prefers a standalone voice system, Suu has you covered.
Setup takes under two minutes. Once you've added two or three Siri shortcuts, hands-free hydration tracking becomes automatic — and that's exactly when habits stick.