# Treynor CSD vs Underwood CSD

The clearest difference is update cadence: Underwood CSD at every 3 months against Treynor CSD's every 28 months. Underwood CSD also leads on rating (5.0 vs 4.8). Treynor CSD's advantage is device support (3 vs 1) and iOS requirement (9.0 vs 16.0). On price, ratings volume, 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.

Underwood CSD holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 5 and 2 respectively.

Treynor CSD ships an update every 28 months, Underwood CSD every 3 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Treynor CSD | Underwood CSD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (5 ratings)](https://appshunter.io/ios/app/treynor-csd/id1276751959/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/underwood-csd/id6479309999/reviews)** |
| Number of ratings | **5** | 2 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 2 MB | 143 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Treynor Community School District](https://appshunter.io/developer/1620605230) | [Underwood Community School District](https://appshunter.io/developer/1735511534) |

## What reviewers say

### Treynor CSD

[App page](https://appshunter.io/ios/app/treynor-csd/id1276751959)

Stay informed about school events and news with convenient access to calendars and announcements. Receive timely updates through push notifications.

**Highlights:** Multiple calendar options, News and announcements, Push notifications

**Features:** macOS Compatibility

**In-app purchases:** none


### Underwood CSD

[App page](https://appshunter.io/ios/app/underwood-csd/id6479309999)

Stay informed about school events, customize notifications for your student's activities, and access weekly cafeteria menus. Get district updates and easily find staff contact information.

**Highlights:** Event calendar with sharing, Customizable student organization notifications, Weekly cafeteria menus, District live feed updates, Staff and department directory

**In-app purchases:** none


## Frequently asked questions

### Is Treynor CSD free?

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

### Is Underwood CSD free?

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

### Which has better reviews, Treynor CSD or Underwood CSD?

Underwood CSD is rated higher. Treynor CSD averages 4.8 out of 5 from 5 ratings, while Underwood CSD averages 5.0 from 2 ratings.

### Do Treynor CSD or Underwood CSD have ads?

Neither Treynor CSD nor Underwood CSD shows ads.

### Which is updated more often, Treynor CSD or Underwood CSD?

Treynor CSD ships an update every 28 months, and Underwood CSD every 3 months. Most recently, Treynor CSD was updated on October 29, 2026 and Underwood CSD on October 24, 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.*