Cavrya · Pool Water Balance
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About this app
Cavrya reads your pool water balance in under 60 seconds.
Enter your measurements. Get a clear LSI diagnosis. Know exactly what to do next — without chemistry expertise or guesswork.
What Cavrya calculates:
• Langelier Saturation Index (LSI) with full parameter breakdown
• CYA-corrected carbonate alkalinity — the step most apps skip
• Corrective dosage for your pool's exact volume
• Chemical risk: balanced, scaling tendency, or corrosive water
Why the LSI matters:
The Langelier Saturation Index is the professional reference standard for pool water balance. A negative LSI means corrosive water — gradually attacking grout, plaster, heat exchangers, and metal fittings. A positive LSI means scaling water — calcium deposits forming on surfaces, pipes, and equipment. Most apps show you a pH range. Cavrya shows you where your water actually sits on the balance scale, with every parameter contributing to the result: pH, total alkalinity, calcium hardness, temperature, and TDS.
Why CYA correction changes everything:
Cyanuric acid (stabilizer) is present in almost every outdoor pool. It binds carbonate alkalinity, reducing its effective buffering capacity. Without CYA correction, your LSI calculation is wrong — and any corrective action you take is based on inaccurate data. Cavrya adjusts carbonate alkalinity based on your actual CYA level. This is the calculation most consumer pool apps skip entirely. For pools running 30–80 ppm stabilizer, the difference is significant.
How it works poolside:
• Enter pH, total alkalinity, calcium hardness, CYA, temperature, TDS
• Read the diagnosis in plain language
• Apply the recommended corrective action — amounts calculated for your pool's exact volume
Built for the field:
• Offline-first — no internet required, works on any pool deck
• Multi-pool support with complete test history per pool
• Salt water and TDS mode for salt-chlorinated pools
• Retest reminders so no service visit goes untracked
Who uses Cavrya:
Pool maintenance technicians rely on Cavrya to service multiple pools per day with consistent, precise diagnostics — every visit documented, every dosage calculated for the right volume. Demanding pool owners use it to make informed decisions between service visits, without needing a chemistry degree or calling a technician for every question.
Cavrya is a neutral, independent tool. No product brand, no supplier affiliation. The diagnosis is based on your water, your pool volume, and the chemistry — nothing else.
Cavrya is a water balance interpretation tool. Recommendations should be applied with professional judgment based on your specific conditions.
Enter your measurements. Get a clear LSI diagnosis. Know exactly what to do next — without chemistry expertise or guesswork.
What Cavrya calculates:
• Langelier Saturation Index (LSI) with full parameter breakdown
• CYA-corrected carbonate alkalinity — the step most apps skip
• Corrective dosage for your pool's exact volume
• Chemical risk: balanced, scaling tendency, or corrosive water
Why the LSI matters:
The Langelier Saturation Index is the professional reference standard for pool water balance. A negative LSI means corrosive water — gradually attacking grout, plaster, heat exchangers, and metal fittings. A positive LSI means scaling water — calcium deposits forming on surfaces, pipes, and equipment. Most apps show you a pH range. Cavrya shows you where your water actually sits on the balance scale, with every parameter contributing to the result: pH, total alkalinity, calcium hardness, temperature, and TDS.
Why CYA correction changes everything:
Cyanuric acid (stabilizer) is present in almost every outdoor pool. It binds carbonate alkalinity, reducing its effective buffering capacity. Without CYA correction, your LSI calculation is wrong — and any corrective action you take is based on inaccurate data. Cavrya adjusts carbonate alkalinity based on your actual CYA level. This is the calculation most consumer pool apps skip entirely. For pools running 30–80 ppm stabilizer, the difference is significant.
How it works poolside:
• Enter pH, total alkalinity, calcium hardness, CYA, temperature, TDS
• Read the diagnosis in plain language
• Apply the recommended corrective action — amounts calculated for your pool's exact volume
Built for the field:
• Offline-first — no internet required, works on any pool deck
• Multi-pool support with complete test history per pool
• Salt water and TDS mode for salt-chlorinated pools
• Retest reminders so no service visit goes untracked
Who uses Cavrya:
Pool maintenance technicians rely on Cavrya to service multiple pools per day with consistent, precise diagnostics — every visit documented, every dosage calculated for the right volume. Demanding pool owners use it to make informed decisions between service visits, without needing a chemistry degree or calling a technician for every question.
Cavrya is a neutral, independent tool. No product brand, no supplier affiliation. The diagnosis is based on your water, your pool volume, and the chemistry — nothing else.
Cavrya is a water balance interpretation tool. Recommendations should be applied with professional judgment based on your specific conditions.
Pool water balance in 60 sec. LSI, CYA correction, dosage & offline analysis.
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Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
- No data shared with third partiesLearn more about how developers declare sharing
- No data collectedLearn more about how developers declare collection
What’s new
Maintenance update: technical improvements, fixes, and reliability enhancements, with no visible change in the app.
If Cavrya is useful to you, taking a moment to leave a review helps a lot in making the app better known.
If Cavrya is useful to you, taking a moment to leave a review helps a lot in making the app better known.
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About the developer
GUEDEGBE RAMAH
stores@glabs325.com
235 RUE SAINT-HONORE
75001 PARIS
France
+33 6 45 78 01 33
