# Orenda vs Know True

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.

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.

## The numbers

| Metric | Orenda | Know True |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (478 ratings)](https://appshunter.io/ios/app/orenda/id1171005221/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/know-true-up/id1528799124/reviews)** |
| Number of ratings | **478** | 3 |
| Positive reviews | 81.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 20 months |
| Monetization | Free | Free |
| Size | 78 MB | 5 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Hasa Inc.](https://appshunter.io/developer/1713193810) | [Solar Data Pros, LLC](https://appshunter.io/developer/1528799126) |

## What reviewers say

### Orenda

[App page](https://appshunter.io/ios/app/orenda/id1171005221)

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.

**Highlights:** Chemical dosing calculator, LSI water balancing, Pool volume estimator, User-friendly interface, Educational videos

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy to use
- 💡 Helpful for pool maintenance
- 🚀 Simplifies pool chemistry
- 👍 Provides valuable information
- 👍 Great educational resources

**What reviewers complain about**

- 🐛 Issues with updating desired levels
- 🐛 Metric system not working properly
- 🐛 Difficult to input readings
- 🐛 Lack of history/logging functionality

**Reported bugs**

- 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**

- 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

[App page](https://appshunter.io/ios/app/know-true-up/id1528799124)

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.

**Highlights:** Track energy usage and solar production, Monitor impact on utility charges, Solar production monitoring, Alerts for solar system downtime, Notifications for potential solar issues

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Orenda free?

Orenda is free to download, with no in-app purchases.

### Is Know True free?

Know True is free to download, with no in-app purchases.

### Which has better reviews, Orenda or Know True?

Know True is rated higher. Orenda averages 4.7 out of 5 from 478 ratings, while Know True averages 5.0 from 3 ratings.

### Do Orenda or Know True have ads?

Neither Orenda nor Know True shows ads.

### Which is updated more often, Orenda or Know True?

Orenda ships an update monthly, and Know True every 20 months. Most recently, Orenda was updated on October 26, 2026 and Know True on October 20, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*