ePen vs ARpedia
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ePen
This app offers a digital canvas for calligraphy, ink painting, and various artistic functions. It includes customizable brushes, stroke pressure sensitivity, and options for personal stamps. The app also provides insights into Chinese character evolution and a gallery of calligraphy works.
- Calligraphic writing
- Ink painting functions
- Customizable brush sizes
- Stroke pressure sensitivity
- Personal stamp creation
- Chinese character evolution insights
- Calligraphy gallery
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ePen provides calligraphic writing, ink painting and various painting functions, which contains brush sizes, stroke pressures, borders and background color options. Even more, ePen gives you the option to create personal stamps. In addition, the app accommodates knowledge of Chinese characters that allow you to have the insights into the evolution of Chinese characters, provide handwriting samples and scholar work gallery to learn well-known calligraphy, and also enable you to store all your work.
ARpedia
This app uses augmented reality to bring stories and learning experiences to life for children. It transforms ordinary surfaces into interactive canvases for educational adventures, allowing for hands-free engagement with virtual elements.
- Augmented reality storytelling
- Interactive learning experiences
- Hands-free AR engagement
- Transforms surfaces into learning canvases
- Immersive educational adventures
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Introducing ARpedia: Explore, Learn, and Interact with the World of Augmented Reality! Embark on an exciting journey of active reading for children with ARpedia, where the magic of Augmented Reality (AR) technology brings stories to life in a whole new way. Powered by Spotty (essential), ARpedia transforms ordinary surfaces into captivating learning canvases. As you place the app over a surface, a myriad of AR content comes to life, seamlessly merging the digital world with the physical. What sets ARpedia apart is its hands-free experience, enabling users to dive into a world of interactive AR content without any constraints. Engage with the AR world around you, using both hands freely to immerse yourself in educational adventures. With ARpedia, the possibilities for interaction are boundless. Step into the shoes of a firefighter and extinguish virtual flames, feed dinosaurs as if they were right in front of you, or safely conduct daring chemistry experiments – all through the power of AR. Experience the thrill of unbridled interaction as you explore and learn. ARpedia invites users to unleash their creativity, curiosity, and imagination in a digital realm where the lines between reality and imagination blur. Discover the joy of seamless interaction with ARpedia. Download the app today and let your imagination run wild!
Screenshots
Verdict
The clearest difference is price: ARpedia at Free against ePen's $2.99. ARpedia also leads on device support (3 vs 1). ePen's advantage is review sentiment (91% vs 50%) and iOS requirement (10.0 vs 13.0). On update cadence, ads and in-app purchases 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
ARpedia is free to download; ePen costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ePen ships an update fortnightly, ARpedia every 3 weeks. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | ePen | ARpedia |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.0 (2 ratings) — better | — |
| Positive reviews | 90.9% of reviews — better | 50.0% of reviews |
| Number of ratings | 2 — better | — |
| Update frequency | Fortnightly — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 10.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 726 MB | 472 MB |
| Age rating | 4+ | 4+ |
| Developer | STUDIO A | Woongjin Thinkbig Co., Ltd. |
Customer experience
ePen
ARpedia
In-app purchases
ePen
No in-app purchases
ARpedia
No in-app purchases









