SaltCheckNever run out of salt again.
Hard water is back the moment your brine tank runs dry. SaltCheck estimates your salt level — no sensor hardware, works with any softener — and reminds you before it runs out.
Free to use · premium is optional · your data stays on your device
Everything you need. Nothing you don't.
Estimate your water softener's salt level and get refill reminders — no sensor needed, works with any softener.
Live tank estimate
Salt level modeled from your softener size and household — no hardware.
One-tap refill log
“Save & reset to full” with bag count. Done in seconds.
Refill forecast
Know when you'll need salt, so you can buy it before you do.
Low-salt alerts
A quiet warning at your preferred time — before the tank runs dry.
Three steps. That's the whole app.
Describe your softener
Tank size and people in the home — that's all SaltCheck needs.
Watch the level
The tank gauge drains realistically as weeks pass.
Refill & reset
Log the bags you added and the gauge fills back up.
SaltCheck Plus
Everything in the free app, plus the power features for people who track more.
- ✓Multiple softeners (home + cabin)
- ✓Consumption history graph
- ✓Home screen level widget
SaltCheck Plus is an auto-renewing yearly subscription. The free trial converts to a paid subscription unless cancelled before it ends. Payment is charged to your App Store or Google Play account, and the subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your store account settings. See our Terms of Use and Privacy Policy.
Questions?
We're a small team and we read everything. Check the support page or write to support@saltcheck.app.