# Orenda vs BlendPlus

The clearest difference is update cadence: Orenda at monthly against BlendPlus's every 3 months. BlendPlus's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Orenda ships an update monthly, BlendPlus every 3 months. The most recent releases landed on October 11, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Orenda | BlendPlus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (476 ratings)](https://appshunter.io/ios/app/orenda/id1171005221/reviews)** | — |
| Number of ratings | **476** | — |
| Positive reviews | 82.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free | — |
| Size | 78 MB | 103 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Hasa Inc.](https://appshunter.io/developer/1713193810) | [Topcon Tierra](https://appshunter.io/developer/781631402) |

## 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)


### BlendPlus

[App page](https://appshunter.io/ios/app/blendplus/id6764563968)

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

**In-app purchases:** none


## Frequently asked questions

### Is Orenda free?

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

### Is BlendPlus free?

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

### Do Orenda or BlendPlus have ads?

Neither Orenda nor BlendPlus shows ads.

### Which is updated more often, Orenda or BlendPlus?

Orenda ships an update monthly, and BlendPlus every 3 months. Most recently, Orenda was updated on October 11, 2026 and BlendPlus on October 4, 2026.

---

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