All comparisons

CallidusOS vs Semble

A fair look at CallidusOS and Semble.

A UK private-medical EHR aimed at private GPs, consultants and specialist clinics.

We move your data for youSet up in a dayNo long contract

The honest version

Semble (formerly Heydoc) is a strong private-medical EHR. It's clinical-records-first and is widely used by private GPs and specialist clinics. CallidusOS™ takes a broader operating-system approach: EHR is one of ten modules alongside booking, leads, marketing, finance, governance, stock, staff and clinical AI tools.

A fair side by side

How CallidusOS compares to Semble.

Drawn from publicly available information at the date below. Where we could not confirm something, we mark it as not advertised rather than missing, and invite you to check their latest details.

Feature comparison of CallidusOS and Semble
What matters to youCallidusOSMade for UK aesthetic clinicsSemblePrivate medical EHR
UK-built and UK-headquarteredIncludedIncluded
UK data residency for clinical records (London, europe-west2)Included
Purpose-built for aesthetic clinicsIncluded
CQC-aligned governance built inIncludedPartly included
Built-in lead CRMIncluded
Built-in marketing & SMS campaignsIncludedPartly included
AI clinical dictation & summariesIncludedPartly included
Stock tracking with low-stock alertsIncludedPartly included
Inbound webhook, Zapier-friendlyPartly included
Includes a clinic website serviceIncluded
Transparent published pricingIncluded
14-day free trialIncluded
IncludedPartlyNot includedNot advertisedLast reviewed: 28 April 2026

Semble and other named platforms are trademarks of their respective owners and are not affiliated with CallidusOS. Their features change over time, so please check their latest details. This comparison reflects how CallidusOS is built and what we include as standard.

Where each one shines

Both tools are good. Here is the honest difference.

Where CallidusOS shines

  • Full clinic operating system, not just an EHR
  • Aesthetics-grade tooling including injection and treatment tracking
  • Calia Copilot for dictation, summaries and campaigns Soon
  • Built-in marketing, leads CRM and clinic website service
  • Purpose-built for UK aesthetic clinics, not a general-purpose EHR

Where Semble shines

  • Mature private-medical EHR with strong clinical workflow
  • Established in the private GP and specialist market
  • Solid integrations with private medical insurers and labs

Being straight with you

Semble might be the better fit if

  • You are a pure private GP or specialist clinic and EHR depth is your top priority
  • You already integrate Semble with private medical insurance billing flows
  • You don't need aesthetics-specific tooling like injection tracking

The right software is the one that fits your clinic. If Semble suits you better, we would rather you chose them than felt boxed in with us in six months. No hard feelings.

See it for yourself

Try CallidusOS free for 14 days.

No setup fees and no long contract. We will help you move your data across and get settled, with a real person to guide you. Or book a short demo and we will show you around.

Set up in a day, with your data moved across for you.