From field measurement to finished report - in one app
Built for limnologists and environmental labs. Collect measurements offline in the field, document them with photos, analyse them on charts and create finished PDF reports. Export for STATISTICA and R.
Founder program · Everything is free during early access. Accounts created now will keep the core app free forever - with a permanent −50% discount on add-ons once paid plans launch.
Install it on any device
On Windows, get LimnoLog straight from the Microsoft Store. As a PWA, install it on your phone and computer right from the browser. The native Android app (QR scanner, GPS, printing) is available on Google Play and Huawei AppGallery.
Available as an app in the store:
The whole workflow - from field to report
The field, no compromises
Enter measurements offline - they sync automatically when you're back online. Document the site, sample and anomalies with geotagged photos, print and scan QR labels, and let calculated parameters (N-NH₄, COD, trophic index, your own formulas) compute themselves. All from the app on your phone, too.
Automation that watches for you
Connect a sensor or a public API (e.g. IMGW stations) - LimnoLog polls readings on a schedule, computes derived indicators and watches your guidelines. When a measurement crosses a threshold, project admins get an email alert. Supports JSON, CSV and XML/SOAP, with ready-made templates.
Analysis and reports without Excel
Correlations with a trend line (R²), method comparison (Deming, Bland-Altman), control charts and sample/depth profiles against norms - deeper analysis without spreadsheets. Build a finished PDF report in a live-preview wizard (7 languages), export to Excel, CSV for STATISTICA/R and PNG, and share a project as an embeddable public dashboard.
Teamwork and ISO-grade quality
Work together with roles, a GPS station map and a sampling planner. A full change history for every measurement, session approval and locking, and quality control in the spirit of ISO 17025. Data in the EU, GDPR compliance and digital accessibility (WCAG) - ready for institutional requirements.
See it in the app
This is what analysis looks like in LimnoLog
Correlations between indicators
A correlation matrix and regression with a trend line (R²) - check relationships between indicators without exporting to a spreadsheet.
Method comparison
Deming regression and a Bland-Altman plot show whether a new method (e.g. an optical probe) agrees with the reference - bias, RMSE and limits of agreement at a glance.
Depth profile
Compare two indicators (e.g. temperature and oxygen) along a vertical profile - spot stratification instantly.
Live
Live public dashboards
Share a project with a single link - no login. Data refreshes automatically.
Reef & Coast Watch
Water level and temperature from 6 NOAA tide-gauge stations (Hawaii, Florida, Caribbean, Guam), fetched automatically.
View the live dashboard
Global Rivers & Lakes Watch
Water temperature, dissolved oxygen and turbidity from 3 stations in the USA, Germany and Switzerland (USGS, Pegelonline, Eawag) - fetched automatically, with correlations between indicators.
View the live dashboardWho is it for?
Thesis, field project - a full season of measurement data in one place.
Research stations, biology & environmental faculties - team collaboration with full change history.
Standardised field sessions, automatic OOR flags, data export ready to use in regulatory reports.
Water treatment plants, consultancies - a simpler and more affordable alternative to full LIMS.
How does it work?
Set up your project
Add sampling stations and choose parameters from the dictionary. Done in 5 minutes.
Water quality monitoringCollect measurements
In the field (offline) or in the lab. Calculated parameters update automatically on every entry.
Offline field dataAnalyse and export
Trend charts, out-of-range detection (OOR), export to Excel, PDF or CSV for STATISTICA.
Beyond spreadsheetsLearn
Guides, standards and calculators - free
Common research methods, how to read your results, and free calculators. No login required.
Methods guide
Practical guides to proven measurement methods: what, how, with what and what the result means. From limnology to neighbouring environmental fields.
- Amphibian monitoring - counts in the breeding season and at crossings
- Pheromone bark-beetle traps - monitoring and counting catches
- Small-scale forest water retention - monitoring retention structures
Knowledge base
Reference guides for people running monitoring and reading water assessments - how to understand classes, ecological and chemical status, and assessment elements.
- Ammonia in water: NH₃ or NH₄⁺ - why the form decides toxicity
- Algae and blooms in a pond - how to deal with them
- A cyanobacterial bloom - what to do and how to prevent it
Tools
They run in your browser, with no login and no data sent - a concentration-unit converter, oxygen saturation, biotic indices and more. Handy in the field and when interpreting results.
See all toolsAbout the creator
LimnoLog is an independent project developed under the WalFamSystems name by Bartłomiej Walczak. We build tools for Polish and European environmental scientists. Data is stored in the European Union, GDPR compliant.
Join the first users
Early access - everything free. Accounts created now get founder status: the core app free forever and a permanent −50% discount on add-ons.
Start for free - no credit card required