Helpingsystems domore.
We build custom software, add intelligence to WhatsApp & email to prioritize your leads, and run autonomous AI interviews — systems for decisions you can defend.
What we do
Software built for you. Intelligence on top of tools you already use.
RareFourth is a software & AI studio. We ship custom products, plug intelligence into WhatsApp and email so you chase the right leads first, and offer our AI Interviewer as a product for hiring.
Lead intelligence
WhatsApp & email, ranked by who will close.
We connect to the inbox you already live in. Every conversation gets an intent score, a one-line summary, and a suggested next step — so sales starts with Hot, not with newest.
- Intent scoring across WhatsApp + email threads
- Auto-summaries, red flags & buying signals
- Draft replies, reminders & CRM sync
- Cold spam auto-archived — humans review edge cases
Today's priority queue
WhatsApp + Email · synced 2m ago
Priya Nair — Facilities, Infosys Campus
WhatsApp · 2m ago
Asked for pricing twice, wants demo this week. Budget confirmed.
Hot · Ready to buyRahul Mehta — HR, FinEdge
Email · 1h ago
Compared 2 vendors, opened quote 3×. Needs security checklist.
Warm · Follow upBulk inquiry — Internship spam
WhatsApp · 3h ago
Generic blast, no budget, no timeline. Safe to deprioritize.
Cold · Auto-archiveAI drafts the follow-up. You approve in one tap.
Custom software
If off-the-shelf doesn't fit, we build it.
Web apps & MVPs
Customer portals, booking flows, and MVPs you can launch in weeks, not quarters.
Internal tools
Dashboards, admin panels, and ops tools that kill spreadsheets and manual work.
WhatsApp / Email integrations
Bots, auto-triage, notifications, and CRM sync on top of tools your team already uses.
AI features & care
Search, summarization, scoring, and copilots — plus hosting, monitoring, and iteration.
Interviewer · product
A private scorecard, backed by evidence.
Our AI Interviewer conducts, proctors, and scores technical interviews on its own — dimension-level scores, strengths, red flags, and a hire recommendation. Every number traces back to what the candidate actually did.
Meet the Interviewer →
Demo candidate
sample report · anonymized
DEVOPS ENGINEER
senior · 12 questions
Interview Report
Session Summary
01Topic Scores
Strengths
- Strong understanding of Docker concepts
- Good proficiency in Terraform and infrastructure automation
- Solid knowledge of Kubernetes and container orchestration
- Hands-on experience with AWS services
- Good grasp of DevOps tools and practices
- Effective problem-solving and troubleshooting skills
- Familiarity with monitoring using Prometheus
- Clear understanding of microservices architecture
Weaknesses
- Depth of knowledge in Python can be improved (advanced concepts and best practices)
- Limited experience with Ansible for configuration management
- Bash scripting could be more robust and optimized
- DevSecOps practices need deeper practical exposure
- Could provide more structured and detailed responses in some areas
How it works
Three steps. Zero babysitting.
Tell us the pain
Missed leads in WhatsApp chaos, manual ops, slow hiring — one call and we map the fastest win.
We build & plug in
Custom software, lead-intelligence on your inbox, or Interviewer for your roles — integrated with your CRM and tools.
You decide & scale
Prioritized leads every morning, software your team actually uses, and scorecards you can defend.
Your inbox knows who matters. Your software just works. Your hires prove it.
FAQ
Questions, answered.
Three things: (1) custom software — web apps, internal tools, and automations built for you, (2) lead intelligence that plugs into WhatsApp and email to score and prioritize who to chase first, and (3) our AI Interviewer product for autonomous, evidence-backed hiring.
We connect to your WhatsApp Business and inbox, read every thread, and score intent from buying signals — pricing asks, demo requests, follow-up engagement, budget and timeline. You get a Hot / Warm / Cold queue every morning with summaries, red flags, and a drafted reply. Cold spam is auto-archived; humans review edge cases. It syncs to your CRM.
Yes. MVPs, customer portals, internal dashboards, WhatsApp/email bots, and AI features like search, summarization, and scoring. We design, build, host, and maintain it — and integrate with the tools you already use (Sheets, CRMs, payment gateways, etc.).
Yes — the Interviewer is one of our products. Send one link, the AI conducts an adaptive, proctored interview end to end, and your team gets a private scorecard with strengths, red flags, and a hire recommendation. A human always makes the final hiring decision.
Dual-camera AI proctoring plus browser signals flag phones, extra people, second screens, tab switching, and off-screen coaching. Suspicious moments are captured as evidence for a human to review — never used to auto-reject.
Tell us where it hurts — missed leads, manual ops, or slow hiring. We map the fastest win, usually starting with your WhatsApp/email triage or a small software pilot, then expand. Reach out below.
Get in touch
Let's talk about your software, leads, or hiring.
Custom build, WhatsApp + email prioritization, or AI interviews — tell us the outcome you want and we'll map the fastest path.
The result
Build the best system for your company.
Prioritized leads every morning, software your team actually uses, and hires backed by evidence — so the person you chase, ship for, or hire is exactly who they appeared to be.