GantComplete

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Everyone
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Everyone
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About this app

GantComplete is a Gantt chart app designed solely for "practical use on-site."

Landscape-oriented screen design

Project schedules are horizontally long. Instead of forcing them into a vertical screen, it displays the overall project timeline as is in landscape mode. Bars can be moved with your fingers, and schedule changes are completed instantly. Moving a preceding task automatically shifts the subsequent tasks it depends on.

Uninterrupted even without signal

In underground areas, mountainous regions, and construction sites, you can open and edit the project schedule even without a signal. It automatically synchronizes when communication is restored, eliminating the need to re-enter data on-site.

Daily reports are linked to the project schedule

Tasks working on a given day are automatically displayed. Weather is selected with an icon, and progress is tracked by moving a slider. Recorded progress is directly reflected in the project schedule, so daily reports and the schedule are seamlessly integrated.

Instructions are documented:

A clear list highlights who gave instructions to whom and when, and when the recipient received them, ensuring that instructions are not lost.

Print reports on the spot:

Simply specify a period to create a report summarizing the process, daily reports, and instructions. Save as a PDF from the print screen, allowing you to prepare submissions even when a PC is unavailable.

View all sites at once:

For those managing multiple sites, all projects are displayed at a glance. The most behind schedule is listed at the top, so you know where to head first thing in the morning.

Same schedule on PC and smartphone:

By logging in with the same account, the schedule created on the office PC is sent directly to the smartphone at the site.

Progress changes made at the site are reflected on the PC by the time you return. Windows compatible.

Shareable within a team:

Share the schedule by simply inviting via email address. You can separate who can view the schedule, making it safe to share with partner companies. You can also transfer responsibility in preparation for personnel changes or departures.

Try it instantly without logging in!

You can create and use project schedules right away, without even creating an account. If you like it, simply log in later, and your created data will be automatically transferred to the cloud.

Main Features

Gantt Chart (Drag-and-drop bar scheduling, dependency settings, and automatic recalculation upon changes)
Color-coding by work type and group
Automatic WBS numbering
Assignment of personnel and workload confirmation
Critical path display
Output of daily reports, instructions, and reports
To-Do and memo
A3 printing, CSV output
Toggle features to suit your industry
Japanese, English, Chinese, Korean, Spanish

Pricing

The free plan includes 3 projects and 1 project. There are no time limits. You can also create annual schedules. Paid plans start from ¥480 per month. Unlimited projects and rows, critical path, PDF output, and a full site view are available.

Recommended for:

Site supervisors who manage multiple sites and need to check and modify schedules from their smartphones; those who want to carry schedules created on a PC; and small teams who want to stop using spreadsheet software for schedules.
The horizontal layout allows you to see the entire construction schedule at a glance. You can edit even when offline, and the schedule created on your PC can be sent directly to the construction site.
Updated on
Sep 16, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info, Financial info, and App activity
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

・デモを開くたびに同じデモの複製が増えていた問題を修正しました。すでに開いたことのあるデモは、同じものを開き直します。
・日報・指示書の使用設定と必須項目(業種プリセット)が、クラウド保存したプロジェクトを開き直すと初期値に戻っていた問題を修正しました。
・デモがプロジェクト数・タスク数の上限に数えられていた問題を修正しました。
・スマートフォンで購入したプランが、同じアカウントのブラウザ版・パソコン版でも使えるようになりました。
・ストアで解約・変更した内容が、アプリに戻った時点で反映されるようになりました。
Content rating
Everyone
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App support

About the developer
BEAK, K.K.
ikushima@b19.co.jp
14-1-230, MINAMI 1-JO NISHI, CHUO-KU FOR LIFE ODORI MINAMI 1101 SAPPORO, 北海道 060-0061 Japan
+81 90-6268-1919

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