# Orenda vs Citadel Alumni

The clearest difference is ratings volume: Orenda at 478 against Citadel Alumni's 1. Orenda also leads on iOS requirement (15.0 vs 17.6). Citadel Alumni's advantage is rating (5.0 vs 4.7) and update cadence (every 10 days vs monthly). 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.

Citadel Alumni 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 1, so its average is the more settled of the two.

Orenda ships an update monthly, Citadel Alumni every 10 days. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Orenda | Citadel Alumni |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (478 ratings)](https://appshunter.io/ios/app/orenda/id1171005221/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/citadel-alumni/id6761080003/reviews)** |
| Number of ratings | **478** | 1 |
| Positive reviews | 81.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 10 days** |
| Monetization | Free | Free |
| Size | 78 MB | 26 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hasa Inc.](https://appshunter.io/developer/1713193810) | [The Citadel Alumni Association](https://appshunter.io/developer/1388472581) |

## 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)


### Citadel Alumni

[App page](https://appshunter.io/ios/app/citadel-alumni/id6761080003)

Connect with fellow graduates and your alma mater. This app facilitates networking and staying updated with your university community. Share experiences and maintain lifelong connections.

**Highlights:** Stay connected with alma mater, Network with classmates and friends, Share experiences, Maintain lifelong connections, Alumni community updates

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Orenda free?

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

### Is Citadel Alumni free?

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

### Which has better reviews, Orenda or Citadel Alumni?

Citadel Alumni is rated higher. Orenda averages 4.7 out of 5 from 478 ratings, while Citadel Alumni averages 5.0 from 1 ratings.

### Do Orenda or Citadel Alumni have ads?

Neither Orenda nor Citadel Alumni shows ads.

### Which is updated more often, Orenda or Citadel Alumni?

Orenda ships an update monthly, and Citadel Alumni every 10 days. Most recently, Orenda was updated on November 2, 2026 and Citadel Alumni on October 31, 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.*