About
The honest hydration tracker
Brim is a hydration tracker for iPhone that counts what actually hydrates you — not just glasses of plain water. Coffee, tea and milk all contribute, and your daily goal adapts to your body weight, activity and climate. It's built by SYRNIK LTD.
Why we built it
Most hydration apps run on a folk rule — “drink eight glasses a day” — that has no real scientific basis. Others turn drinking water into a game with pets and streaks. We wanted something calmer and more honest: a tracker that tells you the truth about hydration and respects your time and your privacy.
What makes Brim different
- It credits every drink. Brim uses the Beverage Hydration Index — the idea, from published research, that different drinks hydrate you by different amounts — so your coffee, tea and milk count properly instead of being ignored or penalised.
- The goal fits you. Instead of a fixed number, Brim estimates your daily target from body weight, activity level and climate, and adjusts as those change.
- It's private by design. No account, no sign-up, no tracking prompt. Your hydration data stays on your iPhone.
Our standard for the guides
Everything we publish on this site is written to be genuinely useful: we lead with a clear answer, cite the primary research by name, and never overclaim. If the honest answer is “it doesn't matter much,” we say so.
Get in touch
Questions, corrections or press? Email us at support@brimwater.app.
SYRNIK LTD · 66 Paul Street, London, England, EC2A 4NA · Company no. 17257080