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Privacy Policy & Terms of Service

Last updated: June 24, 2026

1. Introduction

DIAR (Data Interpretation Analysis & Response) is a comprehensive, professional-grade educational and productivity platform. DIAR provides a suite of powerful features including exam creation and management, AI-powered academic assistance, a collaborative student community, personal chatbot building, file-to-presentation conversion, and much more. We are deeply committed to protecting your privacy and safeguarding your personal information.

This Privacy Policy and Terms of Service document governs your use of all DIAR services. By accessing or using DIAR, you agree to the practices described herein.

2. DIAR Core Platform Features

DIAR is built around a comprehensive suite of powerful, integrated features designed to serve students, teachers, developers, and professionals alike. The data practices described in this policy apply across all features below. Key components include the Teacher Dashboard (housing DIAR EXAM, Teaching Planner, and DIAR Office) and the Home Screen (featuring DIAR Videos and the AI Assistant), alongside many other tools.

3. Information We Collect

To power the above features and provide a seamless experience, we collect only what is necessary:

• Your email address (when you log in or register)
• Your name and institutional affiliation (if you choose to provide them)
• Profile picture (optional)
• Chat history with the AI Assistant and Mr. Diarings (to provide accurate, contextual responses)
• Exam submissions, results, and performance analytics data
• Files you upload (PDFs, Word documents, images, notes, etc.)
• Content you post on the Community Feed
• Chatbots you create via My Bots (including their configurations)
• Presentations generated via Convert to PowerPoint
• Subscription status (Basic / Pro / Enterprise) and payment reference
• IP address (for unregistered users to prevent abuse and for security monitoring)
• Teaching Planner data — your country, subject, topic descriptions, custom notes, and generated lesson plans
• DIAR Office documents — notes, exams, books, lesson plans, and all content created within the office suite
• DIAR Videos watch history, bookmarks, and search queries
• DIARINGS File generation history — documents created, formats used, and file sizes

4. How We Use Your Information

• To operate all core DIAR features — including DIARINGS FILE, Teacher Dashboard, DIAR Videos, and all Home Screen tools
• To answer your questions accurately through the AI Assistant and Mr. Diarings
• To grade exams, generate results, and produce your personal analytics on My Pastpaper
• To enable secure file sharing with PIN protection on the Community Feed
• To facilitate your chatbot creation and deployment via My Bots
• To process file-to-presentation conversions and DIARINGS File generation
• To manage free-tier, Pro, and Enterprise feature limits
• To improve DIAR services (anonymized and aggregated data may be used for AI model training)
• To communicate important updates, security alerts, and partner opportunities
• To generate curriculum-aligned teaching notes and lesson plans through Teaching Planner
• To power the DIAR Office suite for document creation, storage, and exam publishing
• To serve personalized educational video recommendations and manage your bookmarks in DIAR Videos

5. Mr. Diarings – Teacher-Specific AI Model

Mr. Diarings is a unique, specialized AI model within DIAR EXAM. When a teacher uploads their notes to the system, DIAR processes them and creates a dedicated "Mr. Diarings" instance that has read and thoroughly understood those specific notes. This model then:

• Assists the teacher in improving and refining exam questions based on the material taught.
• Provides students with answers strictly grounded in the teacher's own notes, ensuring that students receive explanations consistent with their curriculum and their instructor's methodology, even when the teacher is unavailable.

Data used to train Mr. Diarings instances is siloed per teacher/class and is not shared across different institutions or users.

6. File Storage, Sharing & Deletion

Your uploaded files — whether they are study materials, exam scripts, shared community files, chatbot training data, Teaching Planner notes, DIAR Office documents, or DIARINGS File outputs — are stored indefinitely until you choose to delete them yourself. This allows you to build a persistent library of your academic work, past papers, and resources.

You have full control:

• Delete any file instantly from the relevant section (File History, My Pastpaper, Community Feed, My Bots, Teaching Planner, DIAR Office, or DIARINGS Files) with a single action.
• PIN-locked files remain inaccessible to anyone without the PIN, ensuring privacy even while stored.
• Once a file is deleted, it and all associated data (conversations, analysis, chatbot instances trained on it) are permanently removed from our active servers. Residual backup copies may persist for up to 30 days before being fully purged.

7. Your Rights

You have full rights over your data on DIAR:

• Access: Request a copy of all data we hold about you, including exam history, chat logs, uploaded files, Teaching Planner data, DIAR Office documents, and DIARINGS File history.
• Delete Account: Delete your entire DIAR account and all associated data at any time, permanently.
• Opt-Out of AI Training: Request that your personal chats and data are excluded from any AI model training datasets.
• Delete Individual Files: Delete any file or piece of content instantly from within the app.
• Data Portability: Request your data in a structured, machine-readable format.

8. Community Feed Guidelines & Prohibited Content

To keep DIAR a safe, professional, and academically focused environment, all users must adhere to the following rules. The following content is strictly prohibited on the Community Feed and any part of DIAR:

1. Political & Government Content: No posts, comments, or media related to partisan politics, government affairs intended to incite, campaign, or destabilize. DIAR is not a political platform.
2. Non-Academic Entertainment: No movies, drama series, or entertainment content unrelated to academic pursuits. The feed is for learning, teaching, and intellectual growth.
3. Nudity & Explicit Material: Absolutely no nudity, sexually explicit images, pornographic videos, or any form of NSFW content. Violation of this rule results in immediate, permanent account termination without warning.
4. Harassment, hate speech, bullying, or any form of abusive behavior.
5. Spam, scams, or unauthorized advertisements.

We employ automated and human moderation. Users can report violations through the app interface.

9. Data Security

DIAR employs robust, industry-standard security measures to protect your personal information and all data within the platform:

• All data is hosted on secure cloud infrastructure (Google Cloud / Firebase) with encryption at rest and in transit (TLS 1.3).
• Access to personal data is strictly restricted and monitored; only authorized personnel may access data for support or maintenance.
• PIN-protected files are encrypted with the user-defined PIN, making them inaccessible even to DIAR administrators without the PIN.
• We never sell, rent, or share your personal data with third parties for their marketing or commercial purposes.
• We conduct regular security audits and vulnerability assessments.

10. Children's Privacy

DIAR is not intended for use by children under the age of 13. We do not knowingly collect personal information from children under 13. If we become aware that a child under 13 has provided us with personal data, we will take steps to delete such information promptly.

11. Changes to This Policy

We may update this Privacy Policy and Terms of Service from time to time to reflect changes in our features, practices, or legal obligations. We will notify you of any material changes through the DIAR app, via email, or through a prominent notice on our platform. Continued use of DIAR after such changes constitutes your acceptance of the updated terms.

12. Contact Us

If you have any questions, concerns, or requests regarding your data or this policy, please reach out to us:

Email: support@diar.co.tz
Instagram: @diar_technology
Blog: diartechai.blogspot.com
App: Get DIAR App

We are committed to responding to all legitimate inquiries within 14 business days.