E vs Vulpe
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
E
Organize and visualize information by joining round plates into rings. Add text, photos, videos, and illustrations to plates, then structure them into themes. Plates can be displayed in 3D and enlarged for presentations.
- Add media to round plates
- Join plates into rings for themes
- Structure plates by associating with other rings/plates
- 3D plate display
- Enlarge plates and flick through content
- Presentation mode
- Share via AirDrop
- Import/export data via iTunes
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E-VOLVOX is an application that supports classification, organization and structuring of information. By joining rings to round plates you can multiply and therefore categorise and re-organise, or reduce cut off to create a different ring. It can also be re-structured by moving the layer of rings and plates. 〈The main features〉 ・You can add letters, photos, videos, handwritten letters and illustrations, etc. to a round shaped plate. ・The plates can be joined together into a ring, and one ring can be treated as one theme or topic. ・Each plate can be structured by associating to another ring or plate. ・The plate can become a 3D display, making it easier to understand the structure. ・You can exagerate the plate, so that a larger image can be displayed. Also, in the case of a ring, you can move to the next or previous plate by 'flicking'. A single sheet display can be made from any plate. ・As you can display the plate in a larger size and move to the next with a 'flick', you can also use this function to make a presentation. ・Using AirDrop, you can send not only plates, rings, boards, but also photos and text boxes. ・By exporting data, you can bring in data from iTunes. You can also load data retrieved from other terminals via iTunes. This application is developed in collaboration between Professor Hitoshi Nakagawa at The Open University of Japan) and Suzuki Educational Software Co., Ltd. ● For public Hitoshi Nakagawa (The Open University of Japan, Professor) Recently, various 'thinking' tools/ have been talked about, especially, mapping and Venn diagrams; simple things that are getting used often in class. However, there are not so many tools available for structural understanding of the upper and lower concepts, as this is hard to originate. Therefore, under the tablet terminal environment, we have developed and released applications that can be utilized for organization, classification, structuring and explanation of information in the class, from Suzuki Educational Software. Its name is "E-VOLVOX". VOLVOX is a green single-celled organism which forms free-swimming spherical colonies. It was named because this application resembles its shape and structure. It is possible to advance by trial and error in various learning situations, and it is also possible to present new forms of information and activities in a not related times series. More easy to explain in basic terms, but this is not a simple application. However, I believe you will have enough information to be useful to visualize and capture what we are thinking, and send it to the world. I Hope you will try it! [Please try it!]
Vulpe
This app helps you manage your reading goals by breaking down large books into daily page targets. It visualizes your progress, alerting you if you're ahead or behind schedule. Log your daily study sessions to stay on track and achieve your academic objectives.
- Set book completion dates
- Calculate daily page goals
- Log daily study progress
- Visualize progress ahead/behind schedule
- Receive progress notifications
- Archive completed goals
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Vulpe helps you stay on track and finish your reference books as planned. It visualizes your progress and shows how far ahead or behind schedule you are, so you always know where you stand. If you’re behind, study a bit more to catch up. If you’re ahead, enjoy the extra time or move further ahead. Just set your completion date, and Vulpe calculates how many pages to study each day. Follow the plan and reach your goal with ease. How it works: 1. Add your book, total pages, and target date. 2. Log your daily study progress. 3. Get notified when you’re falling behind or moving ahead. 4. Archive completed goals and track your achievements anytime. Start your efficient, well-organized study routine with Vulpe today.
Screenshots
Verdict
The clearest difference is review sentiment: Vulpe at 95% against E's 33%. Vulpe also leads on price (Free vs $9.99) and update cadence (every 2 weeks vs every 3 months). E's advantage is in-app purchases (none vs 4) and ads (none vs shown).
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Vulpe is free to download; E costs $9.99 up front. Vulpe sells 4 in-app purchases, starting at $3.99 per month. E asks for nothing beyond the download.
E ships an update every 3 months, Vulpe every 2 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | E | Vulpe |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | — | 4.3 (4 ratings) — better |
| Positive reviews | 33.3% of reviews | 95.5% of reviews — better |
| Number of ratings | — | 4 — better |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 174 MB | 187 MB |
| Age rating | 4+ | 4+ |
| Developer | Suzuki Educational Software Co.,Ltd. | UniLink Inc. |
Customer experience
E
Vulpe
In-app purchases
E
No in-app purchases
Vulpe
- Vulpe Premium Monthly7 Days trial$3.991 Month
- Vulpe Premium Annual7 Days trial$12.991 Year
- Vulpe Premium Yearly7 Days trial$39.991 Year
- Vulpe Premium Outright$29.99









