# GUSD1 vs SERG

The clearest difference is in-app purchases: GUSD1 at none against SERG's 2. GUSD1 also leads on device support (3 vs 1) and iOS requirement (15.5 vs 18.0). SERG's advantage is update cadence (fortnightly vs every 4 months). On price and ads there is nothing between them.

Both are free to download. SERG sells 2 in-app purchases, starting at $35.00 per month. GUSD1 asks for nothing beyond the download.

GUSD1 ships an update every 4 months, SERG fortnightly. The most recent releases landed on October 6, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | GUSD1 | SERG |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (3 ratings)](https://appshunter.io/ios/app/gusd1/id1520432567/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 80 MB | 85 MB |
| Requires iOS | **15.5** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Globe Unified School District](https://appshunter.io/developer/1520432569) | [Safe with SERG inc](https://appshunter.io/developer/1886728506) |

## What reviewers say

### GUSD1

[App page](https://appshunter.io/ios/app/gusd1/id1520432567)

Stay informed about school events, district updates, and cafeteria menus. Customize notifications for your student's organizations and easily access staff contact information.

**Highlights:** Event listings with calendar integration, Customizable notifications by student organization, Weekly cafeteria menus, Live feed for district updates, Staff and department directory

**In-app purchases:** none


### SERG

[App page](https://appshunter.io/ios/app/serg/id6760905097)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $35.00 | per month |
| Yearly Subscription | $300.00 | per year |


## Frequently asked questions

### Is GUSD1 free?

GUSD1 is free to download, with no in-app purchases.

### Is SERG free?

SERG is free to download, with in-app purchases available.

### Do GUSD1 or SERG have ads?

Neither GUSD1 nor SERG shows ads.

### Which is updated more often, GUSD1 or SERG?

GUSD1 ships an update every 4 months, and SERG fortnightly. Most recently, GUSD1 was updated on October 6, 2026 and SERG on October 18, 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.*