Independent AI product company · India

Deep expertise,
in everyday software.

Sandmatter LLP designs, ships and operates its own software — turning applied AI into products people use every day. ReelFyre, TryGehna, NeuroVidz and Instant DJ are all our own.

Built by AI builders from
  • Mu Sigma
  • UnitedHealth Group
  • Reliance Jio
  • BCG X
  • Walmart
  • Cvent

What we build

Our products.

Software we design, ship and operate ourselves — live today or in early access.

The short-form video studio Early access

ReelFyre — short-form,
made to post.

Creators, podcasters, educators and small content teams spend hours turning one long video into consistent short-form. ReelFyre does the first pass — you keep the final say.

Invite-only · wider launch planned by 31 Oct 2026

ReelFyre turns a long video into short vertical reels, ready to post
  1. 01

    Bring a video

    Upload a long video, or bring one in from Google Drive or Dropbox.

  2. 02

    AI finds the moments

    It surfaces self-contained highlights worth sharing.

  3. 03

    Make them yours

    Captions, hooks, vertical reframe and a reusable brand style.

  4. 04

    Schedule & post

    Prepare the caption, cover and timing, then publish.

  • AI-assisted moment selection
  • Editable captions & hooks
  • Vertical reframing
  • Reusable brand styles
  • Thumbnails & editing
  • Schedule & publish

Also bring a finished reel to prepare its caption, cover and schedule. AI analysis and writing run on Google Cloud (Vertex AI · Gemini). Publishing depends on your connected accounts and each platform's permissions. Planned business model: subscriptions plus usage-based credit packs. Developed & operated by Sandmatter LLP.

NeuroVidz — a Craft Score of 76 with second-by-second signals and timestamped fixes
Live

Engagement analysis for video & audio

NeuroVidz

For creators, editors and brand teams.

Upload a clip and NeuroVidz scores its hook, its hold and its feel from what's actually in the picture and the sound — second by second — then lists the edits to make, each pinned to a timestamp. A transparent engagement read you can act on.

  • Craft Score (hook · hold · feel)
  • Second-by-second signals
  • Timestamped fixes
  • Video or audio

Developed & operated by Sandmatter LLP · neurovidz.com

A native music app for the Mac

Instant DJ

Instant DJ is a DJ app and beat maker for the Mac: mix two tracks in sync, scratch on the trackpad and play chords, notes and drums on your keyboard, always in key. Free for 7 days, then one purchase; no subscription, no account.

  • On-device — nothing uploaded
  • Neural stem separation
  • Chords, notes & drums in any key
  • Bounce to WAV
  • No account · no subscription

Native · macOS 14+ · Apple silicon · Developed & operated by Sandmatter LLP

TryGehna — the AI mirror dashboard: browse, try-on, customise and photoshoot
Live

The AI atelier for jewellers

TryGehna

For fine-jewellery retailers, from single stores to chains.

A white-label AI platform for jewellers. Customers try on any piece and customise it live — turning a browse into a bigger, bespoke order — while you shoot your whole catalogue in studio-grade photos, with no photographer. The original design and proportions are preserved exactly.

  • Virtual try-on
  • Live customisation
  • AI photoshoot
  • White-label kiosk

Developed & operated by Sandmatter LLP · trygehna.com

A live companion for Fantasy Premier League

Football Fantasy Live

An independent companion for Fantasy Premier League. Watch your points move while the matches are on — with bonus projected before FPL confirms it — plan transfers with budget and points-hit checks, follow price moves, and track your mini-leagues. Ad-free.

  • Live points & projected bonus
  • Transfer planner
  • Price-change watch
  • Mini-league tracking
  • Ad-free

Free · iPhone & Android · Developed & operated by Sandmatter LLP

How we build

From model to the last mile.

The depth to build the model and the discipline to ship it. Every product above runs on the same full-stack craft we keep in-house — research, engineering, interface and scale. We point it entirely at the software we own.

01

GenAI product engineering

We design and ship our own end-to-end generative-AI products — the model, the pipeline and the interface people actually use.

02

LLM & agentic systems

Retrieval, tool-use, evaluation and guardrails built to be reliable in production, not just impressive in a demo.

03

Applied computer vision

Photoreal generation, identity-preserving edits and perceptual analysis where pixel-level fidelity is non-negotiable.

04

Deployment & scale

Latency, cost and reliability tuned for real traffic — scale-to-zero economics that hold up from one user to millions.

05

Deep-tech R&D

Turning frontier research — multimodal models, on-device neural nets, perceptual signals — into the capabilities inside our products.

06

Cloud-native by default

Built on managed cloud, including Google Cloud's Vertex AI and Gemini, so our products scale without a data centre to babysit.

Why we do it

The magic of AI isn't the demo — it's everything after. Carrying a promising model all the way into production, and making it fast, affordable, dependable and trusted at scale. We built Sandmatter to live in exactly that stretch.

Fidelity you can stake a brand on. Latency a customer never notices. Economics that stay healthy as you grow. That last mile is the whole craft — and it's where we choose to be excellent.

Founding team

The people behind it.

Two Designated Partners of Sandmatter LLP — hands-on from development through deployment to distribution, and the ones who answer your email.

Uddalak Datta

Co-founder & Designated Partner

Works across the whole product lifecycle — building, shipping and getting Sandmatter's AI products in front of the people who use them.

Shivam Verma

Co-founder & Designated Partner

Builds and ships Sandmatter's AI products hands-on — from development and deployment through to distribution.

Full founder profiles →

Get in touch

Try the products, or say hello.

ReelFyre is in invite-only early access; TryGehna, NeuroVidz and Instant DJ are live today. Product feedback, partnerships and press all reach us at one address.