CCGS vs Protractor Teacher
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CCGS
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.
- Instant notifications
- Personalized messaging
- School calendar with reminders
- Latest school news
- Customizable notification settings
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Access the key features of CCGS from the palm of your hand with the Christ Church Grammar School app, developed in partnership with Digistorm and Schoolbox. Receive instant and important information from your school community, receive real-time alerts and experience seamless collaboration between teachers, parents and students. Key features of the Christ Church Grammar School app: Notifications: notifications are synced with Schoolbox to ensure that you receive targeted and important push notifications that matter to you Messages: messages allow parents, teachers and students to communicate personally, in groups or to receive targeted communications from Christ Church Grammar School Calendar: the Calendar provides parents, teachers and students a personalised view of what's coming up for the day or in the future. Students can also receive reminders when the due date for their work is approaching News: news provides the school community with the latest information on what's happening at Christ Church Grammar School Settings allows you to manage the frequency and type of notifications that you receive from Christ Church Grammar School. Developed by Digistorm - Software for Smarter Schools.
Protractor Teacher
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.
- Virtual protractor overlay
- Image angle measurement
- Protractor rotation
- Protractor repositioning
- Geometry education tool
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A simple geometry app that is designed to overlay a protractor over an image. The protractor can be rotated and repositioned to teach students how to use a protractor to measure an angle.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 September 29, 2026 respectively.
| Parameter | CCGS | Protractor Teacher |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | — | 4.5 (2 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | — | 2 — better |
| Update frequency | Every 5 months — better | Every 42 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 29 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Christ Church Grammar School | Alistair Shaw |
Customer experience
CCGS
Protractor Teacher
In-app purchases
CCGS
No in-app purchases
Protractor Teacher
No in-app purchases
Questions
Is CCGS free?
Is Protractor Teacher free?
Do CCGS or Protractor Teacher have ads?
Which is updated more often, CCGS or Protractor Teacher?
Other comparisons
