WEB PERFORMANCE01
+33.13%Conversion-rate improvement
Rakuten 24’s one-month A/B test compared a performance-optimised page with its original version.
web.dev / Rakuten 24, 2022 ↗An external case study, not a forecast or promised result.A great interface
is just the start.
We build the mobile apps, business software and connected systems that make your idea work in the real world.
Book a build call ↗30 minutes to discuss scope, architecture & next steps.
01 / FOLLOW A REQUEST THROUGH THE PRODUCT
01 / THE BUILDDifferent products. The same attention to what’s underneath.
What are you
putting into the world?
Start with your users and your business.
We’ll shape the right first release.
EXAMPLE SYSTEM MAP
ALREADY HAVE A BUILD?
A prototype, an inherited codebase, an app that needs its next release.
Let’s assess what comes next ↗THE FASTLABSDEV POINT OF VIEW
Build the whole experience.
00:12 / MOTION STUDYORIGINAL BRAND MOTION / NO AUDIOExperience. Architecture. Delivery.
02 / UNDER THE HOODClick a layer. See the decisions behind the build.
The details
your users
should never
have to notice.
Permissions. Slow networks. Failed payments. A release that needs rolling back. We bring these conversations into the plan.
Book a build call ↗Technical depth. Explained in plain English.03 / ENGINEERING HAS BUSINESS CONSEQUENCESIndustry evidence, not our client results.
Small details.
Measurable stakes.
Three reasons to look beyond the demo.
Sources and context included.
ANDROID APP QUALITY02
1.09%A threshold worth knowing
Google Play’s overall bad-behaviour threshold for user-perceived crashes. Exceeding it can affect store visibility.
Crash rate1.09%
App not responding0.47%
OVERALL THRESHOLDS · SHARED SCALE 0–1.5%
SOFTWARE DELIVERY03
90%Use AI. Keep the engineering.
Of respondents in DORA’s 2025 research reported using AI at work. Greater adoption was also associated with delivery instability.
Google Cloud / DORA 2025 ↗Nearly 5,000 technology professionals surveyed. Association does not establish causation.A USEFUL WEB PERFORMANCE BASELINEMeasure the experience.
Google’s Core Web Vitals guidance ↗
Measure the experience.
On real devices.
Google’s Core Web Vitals guidance ↗≤2.5sLargest Contentful Paint
Does the main content load quickly?
≤200msInteraction to Next Paint
Does the interface respond promptly?
≤0.1Cumulative Layout Shift
“Good” thresholds at the 75th percentile of real page visits, assessed separately for mobile and desktop. Not measurements of this preview.Does the layout stay stable?
04 / REAL-WORLD COMPLEXITYIllustrative scenarios, tailored to the projects we discuss.
The screen says “done”.
What happens underneath?
05 / FROM FIRST CALL TO FIRST RELEASEProgress you can review. Decisions you can understand.
A clear process.
A visible build.
Scope and delivery milestones are agreed
for your project, not copied from a template.
Define the right problem.
Users, workflows, constraints and the first useful outcome.
OUTPUT / PROJECT BRIEFMake decisions visible.
User journeys, system architecture and a scoped estimate.
OUTPUT / BUILD PLANReview working increments.
Development, integration and testing against agreed criteria.
OUTPUT / TESTED RELEASEPrepare for day two.
Launch, handover, monitoring and a defined support arrangement.
OUTPUT / OPERATING PLANYour product should stay yours.Code & account ownershipDocumented handoverAgreed support scope
LET’S GET SPECIFIC.
Bring the idea.
Bring the questions.
Let’s talk build.
A 30-minute technical discovery call to understand what you need and whether we’re the right team to build it.
- 01Clarify your first release
- 02Discuss technical risks & dependencies
- 03Agree the next step toward an estimate
PROJECT DISCOVERY30 MIN / VIDEO CALL
What are we building?
Next: choose a time.
Calendar not loading? Open it in a new tab ↗
A few good questions.
Can we start small and build in phases? +
Yes. We can identify a focused first release and separate later features from what is needed now. The scope, technical foundations and acceptance criteria are agreed before development.
How do you estimate cost and timeline? +
We review workflows, integrations, design needs, existing systems and delivery constraints. Complex projects may begin with separately scoped paid discovery. The first call is for fit and next steps, not a guaranteed fixed quote.
Do you take over existing or AI-built products? +
We start with an assessment of the code, architecture, access and critical user journeys. We explain what can be retained, what needs work and whether a rebuild is justified.
What happens after launch? +
Support, updates, monitoring and further development are agreed as part of your engagement. We define responsibilities, coverage and response expectations for your project.