Record water measurements - even with no signal
In the field, you record results at the station. Once you're back online, you return to them in the same project - no retyping notes. Before you head out, set up the project and download it to your device.
Free in early access · works on phone and desktop
Field-first, not an afterthought
Works with zero signal
Before fieldwork, prepare the project and sampling stations online and download the project to your device. Record sessions and measurements offline in the field; they sync when the connection returns.
Safe sync with conflict handling
When you reconnect, sessions and measurements upload in the right order and lost-update conflicts are detected and resolved, not silently overwritten. Your field day survives a flat battery or a closed tab.
Photos, geotags and QR labels
Document the station, the sample and any anomaly with geotagged photos, kept with the session or station they belong to. Print and scan QR labels to tie a physical sample to its record in the field.
Calculated indicators compute on the spot
Derived indicators (organic nitrogen, nitrogen fractions and your own formulas) are computed right after you enter the raw values - even offline - so you catch a wrong reading while you are still standing at the station.
Offline field data - questions
Do I really not need a signal? +
Before fieldwork, prepare the project and sampling stations online and download the project to your device. Record sessions and measurements offline in the field; they sync when the connection returns.
What happens to my data before it syncs? +
It is stored safely on the device and clearly marked as saved locally. As soon as you are back online it uploads automatically, in the correct order, with automatic retries.
Can I take photos in the field without a connection? +
Yes. Geotagged photos are captured and queued offline alongside your measurements and upload with everything else on reconnect.
Does it run on a phone? +
Yes - LimnoLog installs as an app on phones and desktops, and there is a native Android build with QR scanning, GPS and printing.
Live public dashboards
Reef & Coast Watch
Water level and temperature from 6 NOAA tide-gauge stations (Hawaii, Florida, Caribbean, Guam), fetched automatically.
View the live dashboardRead more
Plan your fieldwork
Take your measurements anywhere - signal or not
Install LimnoLog on your phone and start your first offline session. Free in early access, no credit card.
Start free