工事完了確認書 vs KfB Install
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
工事完了確認書
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工事完了確認書アプリは、工事完了時の確認項目のチェック・電子署名の記入ができるアプリです。 マンションでの工事完了時、スマートフォンやタブレットでかんたんに項目の確認や署名をしていただけます。 工事予約システムとデータ連動しており、項目設定や、データの閲覧が可能です ※本アプリは、工事予約システムへのお申込みが必要となります。
KfB Install
This app enables technicians to install and maintain smart access devices for residential buildings. It facilitates controlled entry for delivery drivers, streamlining package delivery and reducing building staff involvement. The system ensures secure, one-time access after multi-step driver authentication.
- Device installation and maintenance
- Controlled access for delivery drivers
- Integration with existing access systems
- Multi-step driver authentication
- Package delivery facilitation
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This mobile application is specifically designated for Key for Business technicians to install and maintain Key for Business devices. Key for Business allows residential building owners and managers to give controlled access to Amazon delivery drivers to drop off packages to their residents without the need for help from building staff. This aims to reduce the time spent by delivery drivers waiting for access into the building and eliminates the need for building staff to manually give access to drivers each time deliveries are made. Once an agreement with the property owner or manager is complete, Amazon installs a device that integrates seamlessly with your building’s existing access control system to enable Key for Business. A multi-step authentication process then confirms each delivery driver’s identity before permitting one-time access to your property to deliver your resident’s packages. Learn more: www.amazon.com/keyforbusiness
Screenshots
Verdict
The clearest difference is update cadence: KfB Install at every 2 months against 工事完了確認書's every 5 months. 工事完了確認書's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
工事完了確認書 ships an update every 5 months, KfB Install every 2 months. The most recent releases landed on October 7, 2026 and October 20, 2026 respectively.
| Parameter | 工事完了確認書 | KfB Install |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.7 (14 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 14 — better |
| Update frequency | Every 5 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 14 MB | 108 MB |
| Age rating | 4+ | 4+ |
| Developer | NESPE CO.,LTD. | AMZN Mobile LLC |
In-app purchases
工事完了確認書
No in-app purchases
KfB Install
No in-app purchases
