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What is rivva?

Rivva functions as an all-in-one AI workspace that integrates your calendar, tasks, and email, tailoring your daily agenda to align with your energy levels and capacity for work. The Energy Timeline feature tracks your sleep patterns and activity data—either from wearables or manual input—to forecast your peak alertness times and low-energy phases. Through the Smart Schedule function, the AI intelligently assigns tasks by considering your energy fluctuations, deadlines, priorities, and availability, ensuring that more complex tasks are scheduled during those high-energy moments while lighter activities are saved for when your energy wanes. Moreover, the Automatic Task Capture feature scans your Gmail for actionable items, such as meeting notes, comments from Notion, and updates from GitHub, presenting them for easy scheduling and follow-up. The AI Assistant, known as Nia, enables you to have conversations to strategize your week, input new tasks, reschedule promptly, break down larger projects, and receive daily coaching support. Additional features worth mentioning include a unified calendar interface, a specialized task manager, effortless integration with Google Calendar, time-blocking options, multi-calendar support, and synchronization capabilities across both iOS and web platforms. Ultimately, Rivva fosters a harmonious workspace that boosts productivity while accommodating your natural energy rhythms, making it easier to stay organized and focused.

What is Simtheory?

Simtheory presents a groundbreaking AI-powered workspace that transforms team collaboration by turning conversations into actionable items through its integrated systems, data, and intelligent assistants. Beyond functioning as a simple chatbot, it offers a secure environment where users can develop AI assistants customized for their specific business requirements, which can access internal resources and execute a wide range of tasks such as preparing reports, analyzing data, refreshing CRM entries, scheduling meetings, or interacting with stakeholders. By linking directly to data warehouses, SaaS tools, and internal infrastructures, the AI acquires a well-rounded understanding, allowing it to generate accurate and relevant outputs, thus enabling teams to advance from mere prompts to delegated tasks with quantifiable outcomes. Users also have the option to create collaborative assistants equipped with tailored instructions and knowledge bases, promoting consistent workflows and improving teamwork across various initiatives. Furthermore, Simtheory supports the integration of multiple AI models within a single workspace, allowing users to transition seamlessly between them as needed. This adaptability not only enhances productivity but also ensures that teams are better prepared to tackle evolving challenges in their workspaces. In summary, Simtheory empowers organizations to harness the full potential of AI in their collaborative efforts, fostering a dynamic and efficient working environment.

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Integrations Supported

Gmail
Microsoft Outlook
Claude Haiku 4.5
Claude Sonnet 4.6
Databricks
GPT-5
GPT-5.1
GPT-5.2
GPT-5.4 Pro
GPT-5.5
GPT-5.6
GPT‑5.4 Thinking
Gemini 2.5 Pro
Gemini 3.5 Pro
Microsoft SharePoint
Microsoft Teams
Model Context Protocol (MCP)
Qwen3
Salesforce
Snowflake

Integrations Supported

Gmail
Microsoft Outlook
Claude Haiku 4.5
Claude Sonnet 4.6
Databricks
GPT-5
GPT-5.1
GPT-5.2
GPT-5.4 Pro
GPT-5.5
GPT-5.6
GPT‑5.4 Thinking
Gemini 2.5 Pro
Gemini 3.5 Pro
Microsoft SharePoint
Microsoft Teams
Model Context Protocol (MCP)
Qwen3
Salesforce
Snowflake

API Availability

Has API

API Availability

Has API

Pricing Information

$13.99 per month
Free Trial Offered?
Free Version

Pricing Information

Pricing not provided.
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

rivva

Date Founded

2025

Company Location

United Kingdom

Company Website

www.rivva.app/

Company Facts

Organization Name

Simtheory

Date Founded

2023

Company Location

United States

Company Website

simtheory.ai/

Categories and Features

Task Management

Collaboration
Create Subtasks
Gamification
Gantt Charts
Mobile Access
Percent-Complete Tracking
Progress Tracking
Recurring Tasks
Reporting/Analytics
Spreadsheet View
Task Board View
Task Planning
Task Scheduling
Task Tracking
Time Tracking
To-Do List View

Categories and Features

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