Developer inspecting application code and DOM in browser developer tools
Quality Assurance & App Audits

Find and fix the bugs hiding in your app.

Yonda AppScan scans your web and mobile apps end-to-end — surfacing bugs, performance bottlenecks, security holes, and UX gaps. You get a prioritized report and a dedicated team to fix them, fast.

See what we check
Free instant scan

Scan your app in seconds — free

Drop in your URL and get an instant preliminary health check across security, SEO, accessibility, best practices, and performance. No signup required.

We run a safe, read-only check of a public URL. Deeper code, API, and load-testing audits are part of the full AppScan.

Scanning your app…

Preliminary health score

What we found

This is a quick surface scan. The full AppScan adds deep code review, security testing, real performance metrics, cross-browser/mobile checks, and done-for-you fixes.

Free email safety check

Got a suspicious email? Paste it in.

Copy the whole email and paste it below. We check every link it contains, compare what each link says against where it actually goes, and flag the pressure tactics phishing relies on.

Your email never leaves your browser. The wording is analysed entirely on your own device. Only the web addresses found inside it are checked against registration records and Google Safe Browsing — never the message itself.
!

Whatever this says, the safe move is the same: never sign in from a link in an email. If it claims there's an invitation, parcel, document, or security alert waiting, open the site yourself in a new tab or use its app. If it's genuine, it will be there.

Already replied or signed in somewhere?

Our free security guide walks through securing a compromised email account in the order that actually works — sessions first, password last. Free to forward to anyone who was caught by the same message.

We send the guide once. No mailing list, no follow-up sequence.

A comprehensive suite

Everything we scan for

One audit covers the full surface of your application — from the code your users never see to the experience they feel every day.

Functional bugs & regressions

Broken flows, edge cases, and features that quietly stopped working after your last release.

Performance & load speed

Slow pages, heavy bundles, memory leaks, and bottlenecks measured against real-world budgets.

Security & vulnerabilities

Injection, auth flaws, exposed secrets, and dependency CVEs, mapped to OWASP risk categories.

Accessibility (WCAG)

Contrast, keyboard navigation, ARIA, and screen-reader support checked against WCAG 2.2.

Code quality & tech debt

Complexity hotspots, dead code, anti-patterns, and the debt that slows your team down.

UX & usability

Confusing flows, friction points, and drop-offs that cost you conversions and retention.

SEO & metadata

Crawlability, structured data, meta tags, and Core Web Vitals that shape your search ranking.

Cross-browser & mobile

Rendering and behavior verified across browsers, devices, and screen sizes your users actually use.

API reliability & integrations

Flaky endpoints, error handling, rate limits, and third-party integrations under real load.

Our toolkit

The tools behind every scan

We pair industry-standard audit tooling with the modern stack we build on — so we can both find the issues and fix them.

Audit & QA

Lighthouse Playwright Sentry Snyk OWASP ZAP SonarQube ESLint axe-core k6 BrowserStack

Build & fix stack

React TypeScript Next.js Firebase Stripe Node.js Google Gemini OpenAI
How it works

From scan to shipped fix

A clear, fast process — you always know what we found, why it matters, and what we're doing about it.

1

Share your app

Give us a URL, build, or repo. We scope it in a short kickoff call.

2

We scan & analyze

Automated tooling plus hands-on review across all nine categories.

3

Prioritized report

Every issue ranked by severity, with clear, actionable recommendations.

4

Dedicated team fixes

Want it handled? Our engineers fix issues directly in your codebase.

5

Re-test & verify

We re-run the scan to confirm every fix holds before you ship.

Dedicated team, scaled to you

Results as fast as your project allows

We assign a team sized to your app and timeline. The bigger the project, the bigger the pod — so you get results fast either way.

Quick Scan

Small apps & MVPs

First findings in 48 hrs · report in ~3–5 days

One dedicated specialist runs a focused audit and delivers a prioritized punch list.

Standard

Growing products

~1–2 weeks

A dedicated pod of 2–3 engineers audits, recommends, and fixes the priorities.

Comprehensive

Large platforms

~2–4 weeks

A full team runs a deep, system-wide audit with hands-on remediation across the stack.

Enterprise

Mission-critical

Ongoing · embedded

An embedded team with continuous scanning, SLAs, and release-gate sign-off.

Security and code analysis dashboard on screen
What you get

A report you can act on — and fixes if you want them.

  • Prioritized findings ranked by severity and business impact.
  • Reproduction steps so every issue is clear and verifiable.
  • Concrete recommendations — not vague advice, but exactly what to change.
  • Optional done-for-you fixes implemented by our engineers in your codebase.
  • Re-test & verification to confirm everything holds before launch.
  • Executive summary your stakeholders can actually read.
48hr
To first findings
9
Scan categories
200+
Checks per audit
100%
Fixes re-tested

Ready to ship a bug-free app?

Tell us about your project and we'll scope a scan and a dedicated team to match — fast.