Independent reviews, practical guidance and technical insight for businesses using AI to build websites, applications and business tools — from idea to long-term success.
What we do
Practical, experienced reviews and support for the technology you're building — with a focus on what matters to your business: security, reliability, usability, performance and future growth.
An experienced, independent review of your application or website — security, quality, design, performance and launch readiness.
Find and fix issues, strengthen your application, and get practical, actionable guidance grounded in real-world experience.
Make sure your solution can grow with your business — performance, architecture, hosting and ongoing assurance as things change.
Help your business be clearly understood by AI assistants and modern search — Generative Engine Optimization, done honestly.
Two decades and more in web, hosting and application technology.
From code and databases to servers, security and day-to-day operations.
Practical recommendations that make sense for small and mid-sized organizations.
Purple Tree Owl is a new business, founded in 2026. The experience behind it is not. More about our background
Why it matters
AI is making it easier than ever to build powerful websites and applications. But it can also introduce risks, hidden issues and long-term challenges that aren't always obvious.
Independent Application Review
Harbourline Client Portal
Harbourline Bookkeeping (fictional)
However, we identified one high-priority issue that should be resolved before more clients are invited: under certain conditions, a signed-in client can view statements belonging to another client. We also found that error pages reveal unnecessary technical detail, that some lists will become slow as data grows, and that there is no documented, tested way to recover the database.
A small customer portal where clients of a bookkeeping firm upload receipts, view statements and message their bookkeeper. Built by the firm's owner over several months using an AI coding assistant, a popular JavaScript framework, a managed Postgres database and a serverless hosting platform.
What you receive
A clear, documented report — written so a business owner can act on it and a developer can fix things from it.
The example shown is fictional and for illustration only. It does not describe a real client or a real test.
Explore a Sample AssessmentHow it works
No surprises: you'll know the scope, cost and timeline before any work starts.
Describe your application, what worries you, and what you're hoping to achieve. No technical jargon required.
We'll recommend what's worth examining, what access we'd need, the timeline and the cost — before any work begins.
A documented report with a plain-language summary, prioritized findings, evidence and practical recommendations.
We walk through the findings together. Fix things yourself, with your developer, or with our help — it's your call.
Yes — that's one of the main reasons Purple Tree Owl exists. Whether your application was generated with an AI coding assistant, built by a developer, or a mix of both, we review it the same way: by looking at how it actually works, how it's hosted, and how it handles people and their data.
We don't judge how something was built. We focus on whether it's ready for the job you need it to do.
Not always, but it usually helps. Some things — such as how permissions are enforced or how secrets are stored — can only be properly assessed by reading the code and configuration. Other things, like security headers or certain usability issues, can be reviewed from the outside.
We'll agree on what access is appropriate during scoping, and every report states clearly what we did and did not examine. Please don't send code, credentials or confidential data through the website form; we'll arrange secure access after we've talked.
Yes. Many reviews are of applications already in use. For live systems we agree in advance what we will and won't do, so nothing we do disrupts your customers. Any active testing requires your written authorization and a defined scope.
No, and we'll never present one as the other. A penetration test is a formal, authorized attempt to exploit a system, usually against a defined methodology. Our application review combines code, configuration and architecture analysis with targeted checks of how the application behaves — it often finds the authorization and design problems that matter most for small applications, but it is not a substitute for a formal penetration test where one is required (for example, by a client contract or compliance standard).
If you need a formal penetration test, we'll tell you, and we can help you prepare for one.
Yes. Some clients want us to make the fixes; others prefer clear, prioritized instructions for their own developer or AI tools. Both work. Remediation is scoped separately from the review, so the assessment stays independent of any follow-on work.
Yes. We treat everything you share as confidential, use it only for your engagement, and agree on how access is granted and removed. We're happy to sign a reasonable non-disclosure agreement before you share anything sensitive. See our privacy policy for how we handle website enquiries.
No. The experience behind Purple Tree Owl comes from years of conventional web development, hosting and infrastructure work. We review traditionally built applications, older systems, and everything in between. AI-assisted development is simply a very common reason people now need an independent second opinion.
That's normal, and it's our job to fix it. Every report opens with a plain-language summary written for business owners, and each finding explains why it matters in business terms — not just technical ones. We'll also walk through the results with you and answer questions until the next steps are clear.
Get an independent review and the confidence to move forward.