CalClarity first
Readable scope, visible adjustments and a structure that helps a client understand the plan.
ABOUT CALSTRO
A clearer foundation
for project-based work.
Calstro helps you organise scope, effort and costs before you begin a client project.
OUR APPROACH
Good estimates
explain the work.
A project conversation goes better when the scope and assumptions are easy to see. Calstro brings those details into a simple editor and a clean document.
Our focus is practical: phase planning, clear calculations and portable records. You stay responsible for pricing, tax treatment and the agreement you make with your client.
Where the estimate comes fromIllustration
LabourExpensesPlanning buffer
Labour and direct expenses£3,760.00
10% planning buffer£376.00
Estimate before tax£4,136.00
Sample only. Your editor uses the rates and percentages you enter.
Your judgement stays central
The tool calculates your inputs. It does not choose market rates or verify a project’s feasibility.
Portable by design
Print a PDF, export a CSV and keep a separate backup of your local workspace.
Business contact
Address: 71-75 Shelton Street, Covent Garden, London, United Kingdom, WC2H 9JQ
Email: support@calstroltd.store
About this edition
Calstro is the project estimate tool at calstroltd.store. This downloadable edition stores records locally in your browser and does not provide an authenticated cloud account or shared workspace.
Subscription plans are presented for a future connected service. This package does not collect payments or activate a paid account.
A STRONGER START TO THE NEXT PROJECT
Clear scope.
Confident conversations.
Build an estimate that explains the work, the assumptions and the number at the bottom.
Create your project estimate → Explore plansStart in your browser. No card required.
Registered company details
CALSTRO LTD
Company registration number: 17220742
Website: calstroltd.store
Email: support@calstroltd.store