Dr Karl vs PLC Armidale
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dr Karl
Explore science through augmented reality with interactive holographic content. Access bonus material, answer intriguing questions, and revisit content from previous books. Requires trigger images from the physical book to activate AR features.
- Augmented reality holograms
- Interactive bonus content
- Access to previous book content
- Trigger image activation
- Science trivia questions
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Prepare yourself for bonus awesome content and watch Dr Karl pop up and introduce each chapter. There’s so much extra stuff, it’s like a book-within-a-book. Click on the hotspot links to access more information related to the topics in his latest book ‘Dr Karl’s Surfing Safari Through Science’. Among other things, Dr Karl asks: - Why can sharpening a pencil in space kill you? - What does a red sunset mean fine weather tomorrow? - How far would the Earth's viruses reach if you laid them end to end? - How can dead fish, and whales, keep swimming – after they’re dead? To experience the Dr Karl ‘holograms’ in augmented reality (AR), you’ll need the trigger images within the book. These are the front cover and the first page of each chapter. If you’d like a taster of the book without the entire stories, you can simply download the trigger images from the Help page within the application and access the augmented reality content by following the instructions. If you’re looking for the AR content for the previous book: ‘Dr Karl’s Random Road Trip Through Science’, don’t worry, it’s all still available through the app! Just look for the Random Road Trip footer in the app to access all that sciency goodness too! The Dr Karl App was developed by the awesome team at auggd.com. Videos were produced with support from the Media Room in the Faculty of Arts and Social Sciences, University of Sydney. The loading image of a Dr Karl shirt is by Luisa Brimble for frankie magazine. Thanks to you all.
PLC Armidale
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Access the key features of Presbyterian Ladies College, Armidale from the palm of your hand with the Presbyterian Ladies College, Armidale app, developed in partnership with Digistorm and Edumate. Receive instant and important information from your school community, receive real-time alerts and experience seamless collaboration between your users. Key features of the Presbyterian Ladies College, Armidale app: Newsfeed: An aggregated view of the latest Broadcasts and Space Posts from the last 30 days. Calendar: The Calendar provides carers a personalised view of what's coming up for the day or in the future. To-Do: Access your Appointments and Event request. You will also be able to action these items by Accepting or Declining the item all from within the app. Tasks: This module allows careers to know and be reminded when their tasks are due. Timetable: The timetable feature pulls information dynamically from Edumate so that careers can view their child's class schedule. Events: This module will provide you with a list of events that have been approved/accepted by the carer. Absence: Access all unacknowledged and unverified absences with your app, as well as absentee history. Carers can also acknowledge and verify each absence directly from the app. Settings allows you to manage the frequency and type of notifications that you receive from Presbyterian Ladies College, Armidale . Developed by Digistorm - Software for Smarter Schools
Screenshots
Verdict
The clearest difference is update cadence: PLC Armidale at every 7 months against Dr Karl's every 18 months. On price, ads, in-app purchases and device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Dr Karl ships an update every 18 months, PLC Armidale every 7 months. Both last shipped on November 3, 2026.
| Parameter | Dr Karl | PLC Armidale |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 30.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 18 months | Every 7 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 139 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Augmented Reality Services Pty. Ltd. | Presbyterian Ladies College Armidale |
In-app purchases
Dr Karl
No in-app purchases
PLC Armidale
No in-app purchases









