TAS-CHA

About TAS-CHA

Deep Dive with Clara AI

TAS-CHA is an all-in-one work management platform for professional services work, developed and operated by Grand2 Co., Ltd. In most firms information is scattered across tools: chat in one app, tasks in spreadsheets, files in cloud storage, minutes in a word processor. TAS-CHA is built on the opposite principle, so that everything tied to a single project lives in the same place. Business chat, task management with dependencies and Gantt charts, AI task generation, AI file summarization, meeting minutes, file management, scheduling and notes all run on one platform. What is decided in chat becomes a task, attachments are collected into the project's file list automatically, and approved minutes are locked and fingerprinted with a SHA-256 hash so tampering can be detected. It is designed for professionals who run several client engagements and internal projects in parallel, such as lawyers, labor and social security attorneys, certified public accountants, consultants and project managers, and it is also used by sales managers, systems engineers, construction and architectural designers, and video production creators. Clients outside your company can be invited to individual projects and cannot see your other engagements, with edit and view rights assigned by role, and they can join on the Free plan so inviting them costs them nothing. TAS-CHA runs in the browser, as Windows and macOS desktop applications, and as iOS and Android mobile apps, and is hosted on Google Cloud Platform in the Tokyo region. The Free plan has no time limit.

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Pricing

Free Trial Not Available
Starts at $3.7.
View Detailed Pricing

Platforms Supported

Browser Based (Cloud)
Mobile App (Android, iOS)
Desktop App (Windows, Mac)

Organization Types Supported

Medium Business
Small Business
Freelancers
Individuals

API Support

Not available

Modes of Support

Business Hours, Online

TAS-CHA Features

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Task Management Features

Subtasks

Helps to create and manage subtasks that forms part of a larger piece of work to be done

Deadline Management

Allows to set, track, and manage deadlines for tasks, projects, or goals. It ensures that tasks are completed on time, promoting efficiency and productivity.

Comments (Notes)

To encourage discussion, offer feedback, make a note, or clarify a point within a document or application.

Dependency Management

Helps in identifying, documenting, and managing relationships between tasks, resources, and other projects to ensure a project's smooth progression and timely completion.

To-do List

It helps add a list of tasks you need to complete or things you want to do.

Mobile Access

Allows accessing the software and product/service related information from a mobile device

Task Tracking

Helps in tracking the task assigned to different team members or teams

Task Scheduling

Helps in scheduling various tasks for proper implementation of the same

Task Assigning

Helps in assigning the tasks to a team member individually or the team collectively

Progress Tracking

Helps in tracking and measuring the progress and developments of a task assigned

Gantt Charts

Helps in providing an overall glimpse of your work to adjust your plans in a calendar view quickly

Alerts

Provides reminders or notifications when a deadline is approaching, an upcoming event or a pending task

Collaboration Tools

Interactive tools meant to make the application highly collaborative and encourage teamwork

Resource Management

Resource management is the process by which businesses manage their various resources effectively. Those resources can be intangible – people and time – and tangible – equipment, materials, and finances.

Task Prioritization

Facility to rank the tasks in the order you will do it

Workflow Management

Helps in managing and ensuring smooth flow of the tasks assigned to a team or organization

Time Tracking

Helps in tracking the task assigned to different team members or teams

Reporting (Analytics)

Provides insightful reports and important business metrics to track and measure the outcomes and progress.

Recurring Task Management

Helps in monitoring and tackling the tasks or responsibilities that are needed to be managed on a recurrent basis

Gamification

Helps in applying game mechanics to the work environment for better collaboration and engagement

Percent-Complete Tracking

Percentage of work done on estimated items.

Document Management Features

Document Archiving

Helps in storing documents which have become obsolete but is important as historical data

Collaboration Tools

Interactive tools meant to make the application highly collaborative and encourage teamwork

Version Control

It gives the team the ability to recall specific versions of a document, code, content, file, or folder that records changes over time.

Optical Character Recognition - OCR

Helps in converting scanned paper documents into editable files

Offline Access

Allows users to access files and documents in offline mode

File Type Conversion

Helps in converting one file type into another without compromising the data quality and visibility

File Recovery

Helps in recovering lost, inaccessible, damaged or deleted files from a hard drive or disk

e-Signature

Electronic Signatures help users to sign their digital documents remotely

Document Retention

Helps in deleting automatically confidential files at a certain point of time, transfer file to new folders or to specified people to avoid misuse of vital information

Document Indexing

Allows tagging documents with separate search-friendly terms to make them easily accessible.

Document Assembly

Helps in creating a document on an automated basis

Compliance Tracking

Helps in tracking and monitoring and auditing all the regulatory compliance requirements

Project Collaboration Features

Commenting & Feedback

File Sharing & Document Collaboration

Task & Project Coordination

Team Communication & Messaging

Notifications & Alerts

Real-time Collaboration

Helps more than one person to work on the same file simultaneously

Reporting & Activity Tracking

Integration with Project Tools

TAS-CHA Pricing

Free Trial

Not available

No Credit Card Required, Get Started for Free

Pricing Options

Freemium ( Limited Features )

Premium Plans ( Subscription )

Free Plan Free

Free plan for individuals or small teams looking to try TAS-CHA. Includes up to 5 contacts, unlimited chat, 5 rooms per user, and 500MB storage per user.

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Standard Plan $3.70 $3.70 per user / month

¥550 / user / month. Designed for professional team use. Includes unlimited contacts, unlimited chat, unlimited rooms, and 10GB storage per user.

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TAS-CHA FAQs

What is TAS-CHA and who is it for?

TAS-CHA is an all-in-one work management platform for professional services teams, developed and operated by Grand2 Co., Ltd. It brings business chat, task management, Gantt charts, AI task generation, AI file summarization, meeting minutes, file management, scheduling and notes into a single workspace, so everything tied to a project stays in one place. It is designed for professionals who run several client engagements and internal projects in parallel, such as lawyers, labor and social security attorneys, certified public accountants, consultants and project managers, and it is also used by sales managers, systems engineers, construction and architectural designers, and video production creators. It can be used by a single person or by a team that includes external members.

How much does TAS-CHA cost?

TAS-CHA has two plans. The Free plan costs nothing and includes up to 5 contacts, 5 rooms per user and 500 MB of storage per user, with no time limit. The Standard plan is 550 JPY per user per month (tax included) and includes unlimited contacts, unlimited rooms and 10 GB of storage per user. Chat is unlimited on both plans. Payment is by credit card, and only monthly billing is offered at this time; annual contracts and invoice-based billing for corporate accounts can be discussed through the contact form. Plans can be changed or cancelled from account settings.

Is there a free trial?

TAS-CHA does not use a time-limited trial. Instead it offers a Free plan that can be used indefinitely, with up to 5 contacts, 5 rooms per user and 500 MB of storage per user, so you can evaluate the product at your own pace and upgrade to the Standard plan only when you need more capacity. Clients you invite can also participate on the Free plan, so inviting them does not create a cost for them.

Which platforms and devices does TAS-CHA support?

TAS-CHA runs in the browser (latest versions of Chrome, Edge, Safari and Firefox), as desktop applications for Windows and macOS, and as mobile apps for iOS and Android. The iOS app requires iOS 15.0 or iPadOS 15.0 or later and is available on the App Store; the Android app is available on Google Play. Desktop installers are distributed from https://app.tas-cha.com/download . You can sign in to the same account on several devices at once, and message drafts sync between them.

Can I invite clients from outside my company?

Yes. External clients can be invited on a per-project basis, and they can only see the projects they have been invited to, so information about your other engagements stays hidden. Edit and view permissions are assigned by role, so you can decide whether an invited member can change content or only read it. Invited clients can take part on the Free plan, which means you can bring them in without asking them to pay.

What can the AI features do?

TAS-CHA uses Google Vertex AI (Gemini) for two things. AI task generation reads meeting minutes, chat threads and documents, extracts the next actions and suggests owners and due dates; it accepts direct text input, PDF, Word, Excel, PowerPoint and plain text files up to 100 MB, and can process several documents at once. AI file summarization produces a structured, section-by-section summary of long PDF and Office documents with links back to the relevant part of the source. Sending data to AI requires explicit consent the first time, the consent date and version are recorded, and consent can be withdrawn from settings. Under the Vertex AI agreement, user data is not used to train foundation models.

How does TAS-CHA handle meeting minutes?

Minutes are written collaboratively in real time, with conflicts resolved automatically so several people can edit the same document at once. Once the participants approve the minutes, editing is locked and the content is fingerprinted with a SHA-256 hash, so any later tampering can be detected. A history of who edited what and when is retained, and minutes can be exported to PDF or Word with the approval information and hash value printed alongside the text.

How is my data protected?

TAS-CHA runs on Google Cloud Platform in the Tokyo region, using managed databases and caching, file storage with multi-provider failover, and automated backups. Web, mobile and real-time traffic is encrypted, with TLS 1.2 or above at the load balancer, and session cookies are Secure with SameSite control in production. Passwords are hashed with bcrypt and never stored in plain text, and Google Calendar and Apple Sign-In refresh tokens are encrypted with AES-256-GCM. Sign-in options are email and password, Google OAuth, and Apple Sign-In, with JWT plus refresh token rotation and expiry after 30 days of inactivity. Members are separated per project, so anyone who has not been invited can neither view nor edit that project.

Does TAS-CHA integrate with other tools or offer an API?

Google Calendar integration is available for scheduling: you propose candidate times, participants respond, and once a time is fixed the event is confirmed automatically and linked to chat notifications and task creation. Outlook and Microsoft 365 calendar integration is not supported at this time. There is no public API today, and there is no automatic import of past logs from other chat tools or bulk import of tasks from Excel or CSV, although Excel files can be passed to AI task generation. If you need a specific integration, please get in touch through the contact form at https://hp.tas-cha.com/contact/ .

How long does setup take, and how do I get support?

Setting up an account, creating a project and inviting members takes only a few minutes, so most teams can start using TAS-CHA the same day. You can sign up for free at https://app.tas-cha.com/auth/signup/ . Support is handled mainly through the contact form at https://hp.tas-cha.com/contact/ , which accepts enquiries at any time and is answered in order once the content has been reviewed; you can also call +81-3-6427-0944 for pre-sales and rollout questions. Feature documentation is published at https://hp.tas-cha.com/features/ .

What is TAS-CHA used for?

TAS-CHA is Task Management Software. TAS-CHA offers the following functionalities: