MADX Digital vs S⁴Capital
MADX Digital vs S⁴Capital, compared side by side on 12 data points: what each one does, how big it is, what it has raised, the tech running each site, and what users report. We score both out of 100 on traction, team and visibility: MADX Digital is on 24/100 and S⁴Capital on 58/100.
Where each one leads
MADX Digital
- agent readiness: 38/100 against 28/100
S⁴Capital
- our overall score: 58/100 against 24/100
- domain rating: 42/100 against 6/100
At a glance
| Measure | MADX Digital | S⁴Capital |
|---|---|---|
| What it is | London-based agency specializing in SEO and Generative Engine Optimization (GEO) for B2B SaaS. | A tech-led digital advertising, marketing, and technology services company. |
| Category | Agentic SEO, SEO, Generative AI, B2B SaaS | AdTech, Marketing Tech, Digital Advertising, Content Marketing |
| Sells toBusiness model | B2B | B2B |
| Offering | Services | Services |
| Founded | 2021 | 2015 |
| Headquarters | London, United Kingdom | London, United Kingdom |
| Status | Inactive | Active |
Size, funding and growth
| Measure | MADX Digital | S⁴Capital |
|---|---|---|
| Employees | Not published | 73 |
| Headcount growthLast 12 months | Not published | +18.3% |
| Total funding | Not published | $1.0M |
| Latest round | Not published | Seed |
| Valuation | Not published | $4.2B |
| LinkedIn followers | Not published | 23,316 |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | MADX Digital | S⁴Capital |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 24/100 | 58/100 |
| Traction | Not published | 59/100 |
| Team | 70/100 | 50/100 |
| Community | Not published | 15/100 |
| Search visibility | 10/100 | 24/100 |
| Quality | Not published | 68/100 |
| Agent readinessHow well an AI agent can read and act on the site | F (38/100) | F (28/100) |
| Domain ratingLink authority, 0-100 | 6/100 | 42/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | MADX Digital | S⁴Capital |
|---|---|---|
| CDN | Not detected | CloudFront |
| Analytics | Not detected | Google Tag Manager |
MADX Digital vs S⁴Capital: common questions
Which is better, MADX Digital or S⁴Capital?
On our 0-100 score S⁴Capital rates higher (58/100 against 24/100). The score weights traction, team, visibility and profile completeness, so it reflects company strength rather than which product suits you. We compare the two on 12 data points above: read the rows that match what you are buying for.
How do MADX Digital and S⁴Capital compare on the numbers?
MADX Digital leads on agent readiness (38/100 against 28/100). S⁴Capital leads on our overall score (58/100 against 24/100), domain rating (42/100 against 6/100).
Read the full MADX Digital review and pricing or the S⁴Capital review and pricing. You can also browse other MADX Digital alternatives we track.

