Orenda vs Know True
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
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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.
Know True
This application helps utility customers with solar panels understand how their energy consumption and solar production affect their electricity bills. It also monitors solar system output, alerting users to potential production issues.
- Track energy usage and solar production
- Monitor impact on utility charges
- Solar production monitoring
- Alerts for solar system downtime
- Notifications for potential solar issues
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Know True-Up allows utility customers who also have solar to see how their energy usage habits and solar energy production combine to impact their utility charges. The software program also has a solar production monitoring component, which notifies the Know-True-Up monitoring team when a solar system has not pushed any power to the grid within a 24 hour period. Utility customers are notified when a potential solar production problem is detected. NOTE: This app is intended for existing Know True-Up customers only.
Screenshots
Verdict
The clearest difference is update cadence: Orenda at monthly against Know True's every 20 months. Orenda also leads on ratings volume (478 vs 3). Know True's advantage is rating (5.0 vs 4.7) and iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases and monetization model 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.
Know True holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Orenda has 478 ratings behind it against 3, so its average is the more settled of the two.
Orenda ships an update monthly, Know True every 20 months. The most recent releases landed on October 26, 2026 and October 20, 2026 respectively.
| Parameter | Orenda | Know True |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (478 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 81.8% of reviews | — |
| Number of ratings | 478 — better | 3 |
| Update frequency | Monthly — better | Every 20 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 78 MB | 5 MB |
| Age rating | 4+ | 17+ |
| Developer | Hasa Inc. | Solar Data Pros, LLC |
Customer experience
Orenda
Know True
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)
Know True
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Orenda
No in-app purchases
Know True
No in-app purchases
