# CCGS vs Protractor Teacher

The clearest difference is price: CCGS at Free against Protractor Teacher's $0.99. CCGS also leads on update cadence (every 5 months vs every 42 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

CCGS is free to download; Protractor Teacher costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CCGS ships an update every 5 months, Protractor Teacher every 42 months. The most recent releases landed on October 6, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | CCGS | Protractor Teacher |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[4.5 (2 ratings)](https://appshunter.io/ios/app/protractor-teacher/id1526985063/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 42 months |
| Monetization | **Free** | Paid |
| Size | 29 MB | 1 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Christ Church Grammar School](https://appshunter.io/developer/1490813198) | [Alistair Shaw](https://appshunter.io/developer/959356999) |

## What reviewers say

### CCGS

[App page](https://appshunter.io/ios/app/ccgs/id1490813199)

This app provides instant access to important school information, real-time alerts, and seamless communication for teachers, parents, and students. It features personalized notifications, messaging, a calendar with due date reminders, and news updates.

**Highlights:** Instant notifications, Personalized messaging, School calendar with reminders, Latest school news, Customizable notification settings

**Features:** macOS Compatibility

**In-app purchases:** none


### Protractor Teacher

[App page](https://appshunter.io/ios/app/protractor-teacher/id1526985063)

This geometry app overlays a virtual protractor onto images. Users can rotate and move the protractor to learn how to accurately measure angles in various contexts.

**Highlights:** Virtual protractor overlay, Image angle measurement, Protractor rotation, Protractor repositioning, Geometry education tool

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

**In-app purchases:** none


## Frequently asked questions

### Is CCGS free?

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

### Is Protractor Teacher free?

Protractor Teacher costs $0.99, with no in-app purchases.

### Do CCGS or Protractor Teacher have ads?

Neither CCGS nor Protractor Teacher shows ads.

### Which is updated more often, CCGS or Protractor Teacher?

CCGS ships an update every 5 months, and Protractor Teacher every 42 months. Most recently, CCGS was updated on October 6, 2026 and Protractor Teacher on October 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.*