Why Your App Doesn't Match the Figma File: Fixing the Design Handoff

Apps drift from their Figma files because design and code are made by different people at different times, and every gap gets filled with a guess. 91% of developers and 92% of designers say the handoff could be improved. The fix is fewer handoffs: shared design tokens, every state designed, and the designer and developer working as one team.

Disclosure: I run Ship It Live, a fixed-price design and development service, so I have a stake in this topic. Every number below links to its source; the build stories are from my own products, not client work.

Why doesn't the app match the Figma file?

Because a design file answers far fewer questions than an app has to. A mockup shows a screen at one size, with perfect data, in its happy state. The developer has to decide everything else: what happens with a long name, an empty list, a slow connection, a failed payment, a small phone. Each decision is reasonable on its own. Together they add up to an app that feels different from the design.

Almost everyone involved knows it. According to Figma's 2025 Designer-Developer Trends report, 91% of developers and 92% of designers believe the handoff process could be improved.

Where does design drift come from?

Drift comes from a small number of predictable gaps. These are the ones I see most often:

Gap	What the developer has to guess	What prevents it
Missing states	Empty, loading, error, partial and offline screens	Designing every state, not just the happy path
Real content	Long names, missing photos, three-line titles	Designing with realistic data
Spacing and type	Values eyeballed from the mockup	Shared design tokens used in both Figma and code
Components	A button that's slightly different on every screen	One component library, built once
Breakpoints	How the layout behaves between phone and desktop	Designs or rules for each width
Motion	How things appear, move and respond to taps	Written durations and easing, or a prototype
Decisions	Why something is the way it is	Notes beside the screens, not just the screens

None of these is a talent problem. They're information that never made it from one person's head into the other person's hands.

Do design tokens fix the handoff?

They fix part of it. Design tokens are named values for colour, spacing, type and radius (for example, "space-4 = 16px") used by the design file and the code alike. When both sides use the same names, a whole class of drift disappears: nobody eyeballs a grey or a margin again.

Tokens don't fix missing states, unclear behaviour or decisions nobody wrote down. They make the visual layer consistent; the rest still needs people talking. If you're setting them up, our guide to design tokens in Figma walks through it.

We learned how far tokens go while building Charcoal UI, my component library of 142 components. Every component uses the same small set of tokens, so a colour or radius change happens once and reaches everything. The harder part was everything tokens can't express: how a menu opens, what a button does while it's loading, what happens with a reduced-motion setting. That behaviour had to be designed and documented component by component.

What should a design handoff include?

If you do have separate designers and developers, a complete handoff includes:

1. Every state of every screen: empty, loading, error, partial and success.
2. The flows, so the developer knows the order screens appear in and why.
3. A component library, with each component's variants and states.
4. Tokens for colour, type, spacing and radius, named the same in design and code.
5. Behaviour notes: motion, validation messages, what happens on tap and on failure.
6. A clickable prototype of the core flow.
7. A handover call, where the developer can ask questions before they guess.

Then keep talking. Most drift happens in week three, when a developer hits a case the file never covered and makes a quiet call instead of asking.

How do you check a build against the design?

Review it side by side, in the browser or on a real device, at the same widths the design uses. A short, repeatable check catches most drift:

1. Same screen, same width: put the design and the build next to each other at phone and desktop sizes.
2. Walk every state: empty, loading, error and success, not just the screen with perfect data.
3. Try real content: the longest name in your database, a missing photo, a three-line title.
4. Check spacing and type against the tokens, not against your eye.
5. Tap everything: buttons, links, menus. Check what happens while something is loading.
6. Test on a real phone, with the text size turned up, and in dark mode if you support it.
7. Check contrast: text should be readable against its background (WCAG asks for 4.5:1 for body text).

Do this weekly during the build, not once at the end. A difference spotted in week one is a five-minute fix; spotted at launch, it's a list of fifty.

Why one team beats a handoff

The most reliable fix is to have fewer handoffs. When the people designing and the people building are one team, a missing state gets designed the moment someone notices it, not reinvented in code.

That's how Ship It Live is set up: I design and write code, alongside Mohsin on UI and UX and Jillani on brand, working on the same product at the same time, in one room rather than passing files along a relay. Differences between design and build show up in days, not at the end.

It's not the only way to work. Large companies with mature design systems make separate teams work well. For a startup building its first product, though, every handoff is a place the product can quietly get worse.

When do you need a product design sprint?

When you already have developers and need the design decided properly before they build. Our product design in 14 days sprint is a fixed $1,999 and produces:

• Every screen, including empty states, errors and loading
• A component library your developers build against
• A clickable prototype of the core flow
• The decisions written down beside the screens
• A handover call with whoever is building it
• An organised Figma file that's yours

If you don't have developers yet, a design-only project isn't what you need: a Figma file is not a product. A build sprint, where the same team designs and builds, avoids the handoff entirely. If you're still working out what to build, how to write a design brief is the place to start.

Sources checked on 8 October 2026: Figma, Designer-Developer Trends 2025, via Figma's design statistics page. Questions? Talk to the Ship It Live team.