# Orenda vs GasTec

The clearest difference is review sentiment: Orenda at 83% against GasTec's 20%. Orenda also leads on rating (4.7 vs 3.3) and ratings volume (476 vs 6). GasTec's advantage is iOS requirement (8.0 vs 15.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Orenda holds the better App Store score, 4.7 against 3.3. That said, the two scores are not equally well evidenced: Orenda has 476 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 83% of Orenda's written reviews are positive against 20% of GasTec's.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 24, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Orenda | GasTec |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (476 ratings)](https://appshunter.io/ios/app/orenda/id1171005221/reviews)** | [3.3 (6 ratings)](https://appshunter.io/ios/app/gastec/id1438896430/reviews) |
| Number of ratings | **476** | 6 |
| Positive reviews | **82.6% of reviews** | 20.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free | Free |
| Size | 78 MB | 97 MB |
| Requires iOS | 15.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hasa Inc.](https://appshunter.io/developer/1713193810) | [GasTec Enterprises Incorporated](https://appshunter.io/developer/1438896429) |

## 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)


### GasTec

[App page](https://appshunter.io/ios/app/gastec/id1438896430)

Manage your fuel account, order deliveries, and make payments directly from your device. View account details, track service, and update your profile information with ease.

**Highlights:** View account information, Track delivery status, Check billing history, Order fuel deliveries, View service status, Make payments, Update profile

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Orenda free?

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

### Is GasTec free?

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

### Which has better reviews, Orenda or GasTec?

Orenda is rated higher. Orenda averages 4.7 out of 5 from 476 ratings, while GasTec averages 3.3 from 6 ratings.

### Do Orenda or GasTec have ads?

Neither Orenda nor GasTec shows ads.

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

Orenda ships an update monthly, and GasTec monthly. Most recently, Orenda was updated on September 24, 2026 and GasTec on September 13, 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.*