KANNA vs 電子黒板plus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KANNA
This app streamlines administrative tasks for non-desk workers in industries like construction and manufacturing. It offers cloud-based access to project information, document sharing, custom reporting, and team communication tools to boost on-site productivity.
- Cloud-based site management
- Photo and document storage
- Customizable report templates
- Team calendar view
- Project-linked chat
- Daily reporting with photo attachments
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KANNA is a “Project Management App” that enhances the productivity of the non-desk work industry around the world, such as construction, real estate, and manufacturing industries. It reduces the troublesome administrative work, travel, and communication to maximize work productivity. ▼ Main functions 【Site management】 Project information is stored in the cloud so users can access the latest information anywhere, anytime from smartphone. 【Photos / Documents】 Upload project photos anytime, anywhere. Documents such as drawings and specification are also stored in the cloud, which allows users to access on the go. Take notes/draw in photos and documents. 【Custom report】 You can easily fill in the familiar format as a template. Since it is stored in the cloud immediately, there is no work man -hours to collect paper forms or return to the office and then post or aggregate them. 【Calendar】 Manage your work schedule in a calendar view with visibility of team members` schedule as well. 【Chat】 Improve communication speed with the chat tool. Chat is also linked to the projects, so you can communicate while checking project details. 【Daily report】 Reporting to support your project from beginning to end with ability to attach photos. ≪Note≫ The recommended environment for this app is iOS15 or higher. ▼ Questions and inquiries KANNA (Kanna) Support Desk will support questions about operation. Inquiries: https://forms.gle/Aj11gMrt1GhP5P98A
電子黒板plus
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電子黒板plusは、土木・建築・設備などの現場写真管理を効率化するための電子黒板アプリです。 現場で黒板付き写真を撮影し、その写真をもとに写真帳のプレビューを作成できます。さらにPlus機能では、写真帳をExcel形式で出力できます。 主な機能: ・電子黒板付き写真の撮影 ・撮影写真の一覧表示 ・写真帳プレビューの作成 ・黒板項目の設定 ・写真帳のExcel出力(Plus機能) 登録なしで使える機能: ・撮影 ・写真一覧 ・黒板設定 ・写真帳プレビュー Plus機能: ・写真帳のExcel出力 注意事項: ・Excel出力にはPlus登録が必要です。 ・写真や作成データは端末内で扱われます。 ・ご利用の端末やOSバージョンにより、一部表示や保存動作が異なる場合があります。 利用規約(EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: 電子黒板plus at every 3 days against KANNA's weekly. 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.
KANNA ships an update weekly, 電子黒板plus every 3 days. The most recent releases landed on October 22, 2026 and October 12, 2026 respectively.
| Parameter | KANNA | 電子黒板plus |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 86.5% of reviews | — |
| Update frequency | Weekly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 179 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | Aldagram Inc. | mio goya |
In-app purchases
KANNA
No in-app purchases
電子黒板plus
No in-app purchases









