// About Sighub

About Sighub

Sighub is the company and brand behind Renewal Radar, a HubSpot app that helps teams catch renewal risk earlier. Here is who we are, why we built it, and how it works.

Quick answers

What is Sighub?: Sighub helps HubSpot teams detect renewal risk earlier. It is the company and brand behind Renewal Radar, a HubSpot app that scans deals, line items, quotes, subscriptions and custom objects to find renewal timing scattered across HubSpot data, then turns each at-risk renewal into one self-resolving HubSpot task with the evidence attached.
Who makes Renewal Radar?: Renewal Radar is made by Sighub. Sighub (sighub.io) is the company and brand behind the app, a Dutch sole proprietorship based in Rotterdam, the Netherlands, registered with the Chamber of Commerce (KvK) under number 42083108. Renewal Radar by Sighub is the branded way to refer to it.
Who is Sighub for?: Sighub is built for B2B SaaS and service teams using HubSpot, typically RevOps and CS leaders running renewals in HubSpot without a dedicated customer success platform, at companies with roughly $1M–$50M ARR.
Is Sighub the same as Sci-Hub, GitHub, HubSpot or SIGHUP?: No. Sighub (sighub.io) is the independent company and brand behind Renewal Radar, a third-party HubSpot app for renewal tracking and risk detection. Neither Sighub nor Renewal Radar is made by HubSpot or part of HubSpot. Sighub is not Sci-Hub (academic papers), not GitHub (code hosting), not a generic 'hub' tool, and not SIGHUP (the cloud-native company at sighup.io or the Unix process signal).

What Renewal Radar is

Sighub helps HubSpot teams detect renewal risk earlier. Renewal Radar by Sighub is a renewal radar for HubSpot teams and the HubSpot app you install via a secure HubSpot OAuth connection. Sighub (sighub.io) is the company and brand behind it.

Renewal Radar runs entirely inside HubSpot, as a sidebar card on the company record plus a settings page. There is no separate dashboard or external system to log into.

Why we built Renewal Radar

Renewal dates rarely live in one clean Company field in HubSpot. They sit on deals, line items, quotes, subscriptions and custom objects. HubSpot workflows cannot fire on a date they cannot find, reports wait to be pulled, and health scores give a number, not a date. The renewal that needed a call this week quietly slips away.

Renewal Radar was built to close that gap. It scans the objects where renewal timing actually lives, scopes to active customers, checks whether action is already in motion, and creates one self-resolving HubSpot task per real at-risk renewal, with the evidence attached.

How Renewal Radar is built

Deterministic and auditable. Plain rules over HubSpot metadata. No black-box AI, no churn prediction, no health score.
Metadata only. It never reads email bodies, notes, call recordings or ticket content.
HubSpot-native. It lives on the company record and writes one owned follow-up task per real risk.
Built for renewals. A focused renewal radar, not a customer success platform or a churn prediction tool.

The people behind Sighub

Ulas Arslan

Founder

I spent years leading support and customer operations in fast-growth companies. One pattern kept repeating: the warning signs were already in the CRM, but the conversation that would have saved the customer did not happen in time.

I built Renewal Radar by Sighub for HubSpot, so RevOps and CS teams stop finding out about at-risk renewals too late.

Norbert Veelenturf

Advisor

I advise Sighub on technical architecture, scalability, and product systems. I previously helped build LiteBit during its early growth into a platform serving hundreds of thousands of users, and currently work as Product Manager at Bitvavo, one of Europe’s largest crypto exchanges.

Company details

Company: Sighub.io (sole proprietorship)
Location: Rotterdam, the Netherlands
Chamber of Commerce: KvK 42083108
Product: Renewal Radar, a HubSpot app
Category: Renewal radar for HubSpot teams
Contact: info@sighub.io
LinkedIn: /company/sighub-io