Orenda vs HydroApps
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Orenda
This app helps you master pool chemistry by accurately calculating chemical dosages and balancing water based on the LSI. It offers a user-friendly experience for both novices and professionals, including a volume estimator and educational videos.
- Chemical dosing calculator
- LSI water balancing
- Pool volume estimator
- User-friendly interface
- Educational videos
Read full descriptionHide full description
Master pool chemistry with the Orenda pool chemical dosing calculator. Measure pool chemicals accurately while balancing water chemistry according to the LSI. The Orenda App is a swimming pool calculator with a user friendly experience, and makes pool chemistry easier than ever. Try the new pool volume estimator and watch Orenda videos in the app. A pool chemical calculator that allows a novice to dose chemicals as accurately as a professional pool operator.
HydroApps
This app digitizes operations for aquatic and recreation facilities, replacing paper logs with real-time data for inspections, water testing, and staff management. It enhances safety, efficiency, and accountability for teams of all sizes, providing powerful performance insights.
- Streamline inspections
- Water testing management
- Staff management
- Real-time data logging
- Performance insights
- Compliance assurance
Read full descriptionHide full description
HydroApps is the all-in-one operations and documentation platform for aquatic and recreation facilities. Streamline inspections, water testing, staff management, and reporting—all from your mobile device. Replace paper logs with real-time data, ensure compliance, and gain powerful insights into your facility’s performance. Designed for teams of all sizes, HydroApps helps you improve safety, efficiency, and accountability—whether you’re on deck or managing multiple locations. You must have a HydroApps login with your organization to access this app.
Screenshots
Verdict
The clearest difference is ratings volume: Orenda at 476 against HydroApps's 10. Orenda also leads on review sentiment (83% vs 67%). On price, rating, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.7 for Orenda against 4.8 for HydroApps. That said, the two scores are not equally well evidenced: Orenda has 476 ratings behind it against 10, so its average is the more settled of the two. Written reviews are what separate them: 83% of Orenda's written reviews are positive against 67% of HydroApps's.
Orenda ships an update monthly, HydroApps every 3 weeks. The most recent releases landed on October 11, 2026 and September 27, 2026 respectively.
| Parameter | Orenda | HydroApps |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (476 ratings) | 4.8 (10 ratings) — better |
| Positive reviews | 82.8% of reviews — better | 66.7% of reviews |
| Number of ratings | 476 — better | 10 |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 78 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Hasa Inc. | Hydroapps |
Customer experience
Orenda
HydroApps
Bugs and requests
Orenda
Reported bugs
4 issues- Desired levels changing when inputting current values
- Metric system not functioning as expected
- Slider feature for inputting readings is slow and frustrating
- App not optimized for all iPhone screen sizes
Requested features
5 requests- Ability to save pool volume and desired levels
- Option to log pool history and track trends
- Integration with pool chemical monitors
- Ability to set custom chemical concentrations
- Support for more languages (e.g., Chinese)
HydroApps
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Orenda
No in-app purchases
HydroApps
No in-app purchases
