Software Alternatives, Accelerators & Startups

FocusStack VS Spatius

Compare FocusStack VS Spatius and see what are their differences

FocusStack logo FocusStack

Know where your focus goes and take it back. FocusStack helps you stay on task with focus sessions, distraction blocking, smart nudges, and automatic time tracking.

Spatius logo Spatius

Next-generation real-time digital avatar infrastructure | Affordable, Accessible, Alive
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  • FocusStack One click. You whole workspace
    One click. You whole workspace //
    2026-06-29
  • FocusStack See where your day went. Share it.
    See where your day went. Share it. //
    2026-06-29
  • FocusStack Tracked hours become invoice
    Tracked hours become invoice //
    2026-06-29

FocusStack

Most productivity tools tell you where your time went after you get distracted.

FocusStack helps you stay focused while the work is happening.

Start a focus session, name the task you’re working on, and pick a project. FocusStack automatically tracks the apps and websites you use, blocks distractions you’ve chosen to avoid, and nudges you when your attention starts drifting.

At the end of the day, you get a complete picture of where your focus actually went, how much time each project received, and whether your actions matched your intentions.

Features

  • Focus sessions
  • Automatic app and website tracking
  • Distraction blocking
  • Smart focus nudges
  • Project-based productivity reports
  • Timeline and calendar views
  • One-click Workspace Stacks
  • Privacy-first local storage
  • Lifetime access

Built for

  • Founders
  • Developers
  • Freelancers
  • Students
  • Remote workers
  • Anyone who spends their day on a computer

The goal isn’t to help you work more.

It’s to help you spend more time on the things that matter.

  • Spatius Spaitus.ai Home Page
    Spaitus.ai Home Page //
    2026-08-03

Spatius is next-generation real-time digital human infrastructure that enables AI to communicate through natural, expressive digital characters rather than text and voice alone. Companies can use Spatius across AI education, recruiting interviews, customer service, smart terminals, and companion products to create more engaging and lifelike user experiences.

Powered by its self-developed cloud-edge 3DGS technology, Spatius addresses visual quality, deployability, and cost at the same time. The product runs across web, mobile, and intelligent hardware, remains stable on constrained networks and a wide range of devices, and supports long-duration, high-concurrency interactions at predictable costs.

Spatius currently serves TAL Education and other leading customers in the education, recruiting, smart devices , and AI companion sectors. These products have reached millions of end users and supported tens of millions of digital human conversations, helping customers take real-time digital humans from demos into long-term, large-scale production.

FocusStack

$ Details
paid Free Trial $29 / One-off
Platforms
MacOS Windows
Release Date
2026 May
Startup details
Country
India
State
Karnataka
City
Bengaluru
Founder(s)
Nishlesh Goel, Vivek Wadate
Employees
1 - 9

Spatius

Website
spatius.ai
$ Details
freemium
Platforms
-
Release Date
2026 August
Startup details
Country
Singapore
Employees
20 - 49

FocusStack features and specs

  • Focus Sessions
    Stay locked in on one task with distraction-free focus sessions.
  • Smart Nudges
    Get gentle reminders when your attention starts drifting.
  • Automatic Time Tracking
    Track apps and websites automatically without manual timers.
  • Project Tracking
    See exactly how much time each project actually receives.
  • Privacy First
    Your activity stays on your machine, not someone else’s server.

Spatius features and specs

  • Photorealistic Real-Time Digital Humans
    Bring AI conversations to life with natural lip synchronization, facial expressions, and lifelike 3D characters. Spatius turns generated speech into responsive digital human animation in real time.
  • Cloud-Edge 3DGS Architecture
    Spatius combines lightweight cloud-based motion generation with on-device 3D Gaussian Splatting rendering. This architecture delivers high visual quality without continuously streaming rendered video from cloud GPUs.
  • Stable on Low-Bandwidth Networks
    Instead of transmitting a heavy video stream, Spatius sends lightweight motion data to the client device. This enables stable interactions on constrained, shared, or variable networks and helps prevent frozen or degraded avatar video.
  • Cross-Platform SDKs
    Deploy digital humans across web, iOS, Android, smart terminals, and intelligent hardware. Spatius supports modern browser and native rendering technologies, including WebGL/WebGPU, Metal, and Vulkan.
  • Built for Long-Running, High-Concurrency Use
    Spatius is designed for extended conversations and large-scale production deployments. Its edge-rendering architecture reduces dependence on cloud GPU capacity, enabling predictable costs as usage and concurrency grow.
  • Flexible AI Integration and Custom Avatars
    Connect Spatius to your preferred ASR, LLM, TTS, and real-time communication stack through standard audio-streaming interfaces. Teams can choose ready-made characters or deploy custom-branded 3DGS avatars for their own products.

Analysis of FocusStack

Overall verdict

  • I don't have verified information about FocusStack (usefocusstack.com) in my knowledge base, so I can't confirm whether it's a legitimate or high-quality product. I'd recommend researching independent reviews, checking the company's reputation, and verifying its claims before use.

Why this product is good

  • I don't have specific, verified data on this product's features or performance.
  • No independent reviews or established track record are available to me for this service.
  • Its legitimacy, pricing transparency, and customer support quality cannot be confirmed from available information.

Recommended for

  • Users should conduct independent research including checking reviews on sites like Trustpilot or Reddit before proceeding.
  • Consider reaching out to the company directly for a trial or demo to assess fit.
  • Best suited for those willing to do due diligence given limited public information on this specific product.

Analysis of Spatius

Overall verdict

  • I don't have verified, up-to-date information about Spatius (spatius.ai) to make a reliable assessment of its quality, features, or performance. I cannot confirm specific details about this product/service.

Why this product is good

  • Insufficient verified data available about this specific product
  • Cannot confirm claims about features, pricing, or performance without reliable sources
  • Recommend checking recent user reviews, independent tech publications, or the company's official documentation directly

Recommended for

  • Users should research current reviews on independent platforms
  • Consider requesting a demo or trial directly from the company
  • Check recent user testimonials and case studies
  • Verify claims through third-party tech review sites

FocusStack videos

How I Track My Deep Work Automatically

Spatius videos

Teaser Homo Spatius Designers de l’espace

Category Popularity

0-100% (relative to FocusStack and Spatius)
Productivity
100 100%
0% 0
AI Tools
0 0%
100% 100
Time Management
100 100%
0% 0
Avatar Generator
0 0%
100% 100

Questions & Answers

As answered by people managing FocusStack and Spatius.

What makes your product unique?

FocusStack's answer

Most productivity tools are passive. They tell you where your time went after the day is over.

FocusStack is designed to help while the work is happening.

  • Focus sessions keep you locked on a specific task
  • Distraction blocking prevents attention leaks
  • Smart nudges help you catch yourself when you drift
  • Automatic tracking shows where your focus actually went
  • Workspace Stacks launch your entire work setup with one click

FocusStack combines focus, time tracking, and productivity insights into a single workflow.

Spatius's answer:

Spatius combines photorealistic 3D Gaussian Splatting avatars with a cloud-edge rendering architecture built specifically for real-time AI interaction. Instead of rendering every frame on cloud GPUs and streaming it as video, Spatius sends lightweight motion data to the user’s device, where the avatar is rendered locally.

This approach addresses visual quality, network reliability, device coverage, and operating cost at the same time. It allows digital humans to remain responsive during long conversations, work across web, mobile, and intelligent hardware, and scale to high-concurrency production environments.

Why should a person choose your product over its competitors?

FocusStack's answer

Most competitors focus on measuring productivity.

FocusStack focuses on improving it.

Tools like Toggl, Clockify, and many time trackers are great at recording hours. FocusStack goes a step further by helping users stay attentive while they’re working through focus sessions, distraction blocking, and real-time nudges.

Users don’t just learn where their time went. They actively protect where it goes next.

Spatius's answer:

Spatius combines photorealistic 3D Gaussian Splatting avatars with a cloud-edge rendering architecture built specifically for real-time AI interaction. Instead of rendering every frame on cloud GPUs and streaming it as video, Spatius sends lightweight motion data to the user’s device, where the avatar is rendered locally.

This approach addresses visual quality, network reliability, device coverage, and operating cost at the same time. It allows digital humans to remain responsive during long conversations, work across web, mobile, and intelligent hardware, and scale to high-concurrency production environments.

How would you describe the primary audience of your product?

FocusStack's answer

FocusStack is built for people who spend most of their day on a computer creating, building, studying, or solving problems.

Typical users include:

  • Founders
  • Developers
  • Freelancers
  • Designers
  • Students
  • Researchers
  • Remote workers
  • Knowledge workers

Anyone who wants to reduce distractions and spend more time doing meaningful work can benefit from FocusStack.

Spatius's answer:

Spatius is built for companies and developers creating AI products that benefit from natural, face-to-face interaction. Its primary users include teams working in AI education, recruiting and interviews, customer service, smart terminals, digital assistants, intelligent devices, and AI companion products.

It is especially well suited to organizations that require long-duration conversations, high concurrency, cross-platform deployment, custom-branded characters, or reliable operation on constrained networks and hardware.

What's the story behind your product?

FocusStack's answer

FocusStack started with a simple frustration.

I would sit at my computer for hours, feel busy all day, and still wonder where my time had gone.

I tried existing productivity and time-tracking tools. They were useful for understanding what happened after the fact, but they didn’t help me stay focused in the moment.

So I started building a tool for myself.

The idea was simple: create something that could help me stay attentive while working, automatically track my activity, block distractions, and show me how I actually spent my day.

What started as a personal tool quickly became FocusStack.

Spatius's answer:

Spatius was created to close the gap between digital human demonstrations and real-world deployment. Many avatar technologies can produce an impressive short demo, but become difficult or expensive to operate when conversations last longer, user numbers grow, or products must run across diverse devices and network environments.

The Spatius team developed its own cloud-edge 3DGS technology to solve these production challenges together. Today, Spatius helps companies turn AI into a more natural and expressive presence, bringing real-time digital humans into education, recruiting, smart devices, customer-facing terminals, and companion applications.

Which are the primary technologies used for building your product?

Spatius's answer:

Spatius is primarily built on proprietary 3D Gaussian Splatting technology and a cloud-edge rendering architecture.

Its cloud-based Motion Server converts generated speech into lightweight facial and motion data, while the AvatarKit SDK renders and animates the 3DGS character locally on the client device. Platform technologies include WebGL and WebGPU for web applications, Metal for iOS, and Vulkan for Android. Spatius can receive real-time audio through technologies such as WebSocket, WebRTC, LiveKit, and Agora, and can integrate with third-party ASR, LLM, and TTS providers.

Who are some of the biggest customers of your product?

Spatius's answer:

TAL Education is one of Spatius’s leading customers. Spatius also works with established companies across education, recruiting, smart devices, and AI companion products.

Products powered by Spatius have reached millions of end users and supported tens of millions of digital human conversations, demonstrating the platform’s ability to operate in long-term, large-scale production environments.

User comments

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What are some alternatives?

When comparing FocusStack and Spatius, you can also consider the following products

Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.

Anam - The Face of AI

Rize - Rize is a time tracker that makes you more productive.

LiveAvatar by HeyGen - Realtime lifelike interactive avatars for conversational AI

Clockify - Simple and free time tracker. Perfect for small and mid-sized businesses as well as freelancers. Unlimited projects and users, unlimited productivity. Get all the premium functionalities, completely free.

Synthesia.io - Create AI videos by simply typing in text. Make engaging videos for e-learning, customer onboarding, etc. No need for actors, cameras or audio equipment.