Services / Mobile App Development / Mobile App UI/UX Optimization
Mobile App Development
Mobile App Development

Mobile App UI/UX Optimization

Mobile app UX audit and optimisation services — diagnose the onboarding failures, navigation dead-ends, and conversion bottlenecks causing drop-off and poor App Store ratings in your existing app.

3–8 wks
Typical Delivery
34%
Avg. Retention Uplift
+0.6
Avg. App Store Rating Gain

A technically capable mobile app with poor UX will haemorrhage users regardless of how well the code is written. Low App Store ratings, high day-one churn, and stagnant retention metrics are symptoms of UX problems — and most development teams lack the structured process to diagnose them objectively from inside the project. We bring an independent UX lens to your existing mobile application, diagnosing the friction points that are costing you users and implementing targeted fixes with measurable retention impact.

Our mobile app UX optimisation engagements combine session recording analysis (Mixpanel, Amplitude, UXCam, or FullStory), heuristic evaluation against Nielsen's 10 usability heuristics, WCAG 2.1 mobile accessibility audits, App Store review sentiment analysis, funnel drop-off mapping, and user interviews where appropriate. We have diagnosed and remediated UX problems for consumer apps, B2B mobile tools, fintech wallets, health and fitness apps, and e-commerce applications — delivering average retention improvements of 25–40% within two sprint cycles post-implementation.

Critically, we implement the fixes ourselves — we do not hand you a 60-slide PowerPoint and walk away. Redesigned screens go through Figma prototype validation with real users before engineering time is spent, and changes are shipped with A/B test variants so improvements are validated against real user behaviour rather than assumptions. Every change is tracked with before-and-after metrics: Day 1, Day 7, and Day 30 retention, session depth, task completion rate, and App Store rating trend.

+12 alerts
✓ Synced
98% Score
9:41●●●
Analytics
Messages
Security
£48.2K
Revenue this month
2,840
Active users
Figma Mixpanel Amplitude UXCam Firebase A/B Testing Hotjar React Native Swift Kotlin TestFlight
  • Full heuristic evaluation with severity-ranked UX issues list
  • Session recording and funnel drop-off analysis with annotated findings
  • Redesigned user flows for highest-impact screens in Figma with prototype validation
  • A/B test design, implementation, and statistical significance analysis
  • WCAG 2.1 mobile accessibility audit with full remediation implementation
  • App Store listing review, keyword optimisation, and screenshot conversion improvements

Why RapideKops?

  • We audit your existing app — a full rebuild is rarely necessary and almost never recommended first
  • Findings are severity-ranked by estimated retention and rating impact, not listed arbitrarily
  • We implement fixes — not produce a slide deck of recommendations for your team to interpret
  • A/B testing infrastructure configured so every change is validated with real user behaviour
  • Accessibility improvements benefit all users, reduce legal risk, and improve App Store rankings
  • Before-and-after retention, CSAT, and store rating tracked for every change we implement

Our Delivery Process

01

UX Audit

Heuristic evaluation of every screen combined with session recordings, funnel analysis, and App Store review sentiment. Output: a severity-ranked issues list.

02

Redesign

We redesign the highest-impact screens and flows in Figma, producing interactive prototypes validated with real target users before development begins.

03

Implement & A/B Test

Changes are implemented with A/B test variants so every improvement is validated against real user behaviour — not shipped on assumption alone.

04

Measure & Iterate

Day 1, 7, and 30 retention, session depth, and store ratings are tracked post-launch. We iterate on any change that did not move its target metric.

Frequently Asked Questions

How do you diagnose UX problems without just guessing?
We combine quantitative data (funnel drop-off rates from Mixpanel or Amplitude, session recordings from UXCam, and App Store review sentiment analysis) with qualitative evaluation (heuristic review against Nielsen's 10 principles). Every finding is evidence-based — grounded in data about what real users actually do, not what they say they prefer.
Our app has 3-star reviews. Can UX optimisation realistically improve that?
Yes — most low App Store ratings come from a small number of repeated UX failures: confusing onboarding, a broken payment flow, a crash in a core feature, or a frustrating navigation pattern. Fixing the top 3–5 issues responsible for the majority of negative reviews typically moves the rating by 0.4–0.8 stars within 60 days of shipping the fixes.
Do you need to rebuild the app to fix UX issues?
Almost never. Most UX problems are in flows, copy, spacing, and interaction patterns — not in the underlying technology. We rearchitect flows in Figma, validate with users, and implement changes in the existing codebase. A full rebuild is only recommended when the technical architecture itself prevents the UX improvements — which is rare.
How do you measure whether a UX change actually worked?
Every change ships with an A/B test — typically 50% of users see the new version, 50% see the old. We run the test until we reach statistical significance, then compare Day 1, Day 7, and Day 30 retention, session depth, and task completion rates between the two groups. We only call a change a success when the data confirms it.
What is a heuristic evaluation and how is it different from user testing?
A heuristic evaluation is an expert review of your app against established UX principles — fast, structured, and independent of user availability. User testing involves real target users attempting tasks in your app. We typically start with heuristic evaluation to quickly surface obvious issues, then follow up with targeted user testing on the specific flows we are redesigning.

Recent Work

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Ready to Stop Losing Users to Bad UX?

Tell us what your analytics and App Store reviews are showing — we will diagnose the UX problems and implement the fixes that improve retention.