Guide

Choosing wrong costs
a quarter, not a quote.

Most founders shortlist on portfolio and price. Neither one predicts whether your product actually gets easier to use. Here's what does - written so you can use it on us too.

The trap

The two weakest signals often get
the most
weight.

A polished portfolio and a friendly sales call are the two weakest signals in this decision, and they're the two most founders weigh heaviest. The portfolio shows the agency's best five screens, not who made them or what changed for the client. The sales call is run by someone who may never touch your project.

What it is

Choosing a UI/UX design agency well means evaluating who will actually do the work, whether they have solved your category of problem before, and whether you can verify the claims before committing budget. The strongest signal is a small paid or free test task completed on your real product.

What to check

The criteria that
predict quality.

CriteriaWhy it matters
Who touches the workAsk directly: is it the senior person on the call, or a junior you will never meet?
Category experienceA SaaS dashboard and a marketing site are different disciplines. Ask for work in your specific category.
Design and buildDesign-only means a handoff to your engineers, and handoffs are where scope and quality leak.
Proof over promisesA case study should show a number that moved, not just before-and-after screenshots.
Communication cadenceWeekly demos or a black box until the reveal? Ask how you will see progress.
Contract flexibilityMonth to month means the agency has to keep earning it every cycle.

Decision checklist

Red flags and
questions to ask.

Red flags

  • Portfolio is all polish, zero metrics
  • They quote before understanding your product
  • You never learn who actually does the work
  • Multi-month lock-in, no exit clause
  • No senior review step before anything ships
  • Refuses any form of test task or trial

Questions to ask

  • Who exactly will work on my product?
  • Have you designed products in my category before?
  • Can you show a metric that moved?
  • What happens when scope changes?
  • Do you build, or hand off to my engineers?
  • Can I test you before committing?

The trial

Test us with a free
3-day trial.

Ask every agency on your shortlist for this. The ones who say no are telling you something.

01

Pick the task

Pick a small part of your existing product.

02

We solve it

We solve one real design challenge on it.

03

Watch us work

See our process, speed and communication.

04

Choose what next

Continue with a pod — or keep the work, no hard feelings.

Quick answers

Before you ask.

Is this page biased toward Desisle?

It is written by an agency, so read it that way. Apply the criteria to us and to everyone else on your list.

How many agencies should I shortlist?

Three is usually enough. More than that and the comparison gets noisy instead of clearer.

Should I always pick the cheapest option?

No, and also not always the most expensive. Match the option to your stage.

What is the fastest way to test a shortlist fairly?

Give each finalist the same small real task and compare the actual output, not the pitch.

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