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Keep the work your business needs. Lower what it costs to run.

Calibre replaces expensive business software with a system your company owns, around the workflows your team relies on.

  • Lower long-term cost
  • Optimized for your work
  • No vendor lock-in

60+Software Projects Delivered

Keep the work. Lower costs

Compare paying for a vendor’s commercial model with funding the capability your business actually needs.

01Commercial model

TODAY

  • Pay for the vendor’s full package
  • Costs rise with seats, tiers and renewals
  • Keep paying to keep the same capability

WITH A SCOPED REPLACEMENT

  • Optimized around work your team is actually doing
  • Lower long-term cost after transition
  • No seat-driven price increases

Systems we assess for replacement

  • Recruitment & ATS
  • CRM & Sales
  • Internal Operations
  • Client Portals

Custom software has to beat the alternatives.

A worthwhile replacement should lower the long-term cost of the system while improving the work your business depends on.

Illustrative example

Five-year cumulative cost

SaaS subscription$100,000 / year
Customer-owned replacement$100,000 once + $20,000 / year maintenance + hosting
Hypothetical five-year cumulative-cost comparisonA SaaS subscription costing $100,000 per year reaches $500,000 after five years. A customer-owned replacement costing $100,000 once plus $20,000 per year for maintenance and hosting reaches $200,000 after five years. This is a hypothetical example, not a customer result.$0$100k$200k$300k$400k$500k1 year2 years3 years4 years5 years$500k$200k
2 yearsCurrent system · $200kReplacement · $140kSavings · $60k
3 yearsCurrent system · $300kReplacement · $160kSavings · $140k
5 yearsCurrent system · $500kReplacement · $200kSavings · $300k

Assumption: SaaS subscription costs remain flat — no seat-price increases or additional seats.

Build around the work you need to keep.

Your replacement is scoped around agreed workflows, data and integrations. There is no need to fund every feature the vendor offers to every customer.

We check what your team actually relies on, what connects to it, and whether those requirements can be met before recommending a build. When the case is sound, Calibre handles the agreed design, development, and migration.

See how replacement works

Agreed replacement scope
Workflows
Data
Integrations
Required external services
Dependencies

Experience with the details a working business cannot lose.

Stefan Vuković, founder and developer of Calibre Web Studio
Stefan Vuković Founder and developer of Calibre Web Studio

ARENA — interconnected data and historical state

Calibre led the replacement of an old system and the data migration for ARENA, a startup valued at $4.2 million. Calibre migrated 1M sensitive records, including transactions, user data, and lineups, without error.

EZYPILL — EXISTING PHARMACY WORKFLOWS

Calibre modernized an existing pharmacy dashboard covering patient and order management, recurring orders, search, and delivery-pricing rules.

Explore the relevant work

CLIENT REVIEWS

What clients say.

“As a developer myself, I set the bar quite high – yet they not only met these standards, but even went a step further when perfecting the final touches of my app. Their professionalism, eagerness to help, and commitment to getting things done made the whole process smooth and enjoyable.”
Wojciech GajdaReformat Studio
“We successfully completed a very complex and long project together. Stefan was extremely flexible, helpful, and able to deliver the level of quality and professionalism I needed. Highly recommended!”
Max MartonCEO @ Anorate
“Stefan is great to work with. Super nice and knowledgeable.”
Omid MovahedEzypill
“It was a real pleasure working with Stefan and his team. This project wouldn’t have reached this level without their input, proactive communication, attention to detail, and valuable feedback. I’m looking forward to collaborating with them again on future projects.”
NevenaCEO @ Organizujje
“We have worked with Stefan across multiple orders for over six months, and we are always happy with the results. Communication is great, and he is always willing to go the extra mile.”
FabianCEO @ Ventaro
“I felt Stefan's honesty and desire to do the job the right way from the start, and he delivered. I highly recommend his services!”
BruceAmerican Autoline
“I am extremely satisfied with Stefan's work as a Full-Stack Developer. His expertise in both front-end and back-end development has greatly contributed to the success of our projects. Stefan consistently delivers high-quality code, demonstrates excellent problem-solving skills, and maintains effective communication throughout the development process.”
EldarCeteor
“Great experience working with Stefan; I was very happy with the result. It was a very complex website with fully bespoke code, yet Stefan delivered above expectations.”
MichelCEO @ Fine Cigars Club
“Stefan was very responsive, which helped a lot, especially during emergencies and delays. Stefan was always reachable, even on Sunday evenings, and very willing to help. I really appreciate it—working with him was always smooth and comfortable. Props!”
ManoelStock Analysis
“Delivered exactly as promised, on time and with great documentation so I can run everything locally.”
StephaneCEO @ Pick to survive

What it actually feels like to work with us

CHAINPAGE
CHRISFOUNDER OF CHAINPAGE
“We’ve been working with Stefan for about a year and a half. We’re building a really extensive app together. If you’re looking for somebody to complete a project for you, look no further than Stefan.”

Working together for about a year and a half on an extensive application.

01 Build the right thing
What if we spend months building the wrong thing?

Don't pay for a failed build.

100% Refunded

If Calibre does not meet the agreed success criteria, the initial build payment is refunded and nothing further is owed.

See how this works

Success is defined against agreed acceptance criteria before development. At project start, 20% of the build fee is paid to Calibre, and the remaining 80% is paid on successful delivery. If Calibre fails to deliver the agreed functioning replacement and to successfully migrate and reconcile the agreed data, the initial payment is refunded and the remaining 80% is not owed. If Calibre succeeds, the initial payment counts toward the agreed project price.

Every step removes a risk.

You do not leap into replacement. The decision is earned step by step.

01 — Check

Find out if the opportunity is real.

See whether the system is worth investigating before committing time or money.

Free written Fit Check.

More than a replacement.

Room to improve the system, adapt after real use, and move away from Calibre if you ever want to.

40 HOURS

Adapt after real use.

The first 12 months include 40 hours for new features and improvements.

Because you shouldn't have to predict every useful change before launch.

CORE WORKFLOW

Improve it. Don't just copy it.

One agreed high-value workflow can be improved as part of the replacement.

Agree what “better” means before development begins.

10 HOURS

Change providers without starting over.

If you move to another provider, Calibre includes up to 10 hours to help them take over.

Same system. Different provider.

Find out whether your software bill holds a worthwhile opportunity.

Get a Free Written Fit Check on one system: the costs that appear removable, a preliminary three and five-year comparison, the important unknowns, and our recommendation with reasons.

Get Your Free Fit Check