Code review reports explained: what to check before you invest

A code review helps you decide whether existing software is a sound foundation for your next step. It examines selected parts of the code, the way the system runs and the evidence available, then explains the risks and practical options.

That next step might be changing supplier, launching an app, fixing persistent faults or investing in new features. Each decision needs different evidence. A working demo tells you something about the screens; it tells you much less about whether the application can be deployed, maintained or recovered after a failure.

At Scorchsoft, we scope reviews around the question you need answered. You do not need every assessment in this guide. Some checks overlap, some need specialist testing, and design work belongs in a separate piece of planning. The agreed proposal defines what we will inspect, what access we need and what you will receive.

Which review do you actually need?

Start with the decision, then choose the depth.

• “I need an initial view of what we have.” A quick skim can identify obvious warning signs and questions worth investigating. It is an orientation exercise.
• “I want another team to take over.” A takeover review examines the evidence needed to build, deploy and support the application, alongside significant risks and missing access.
• “Something specific worries me.” A targeted review investigates an area such as data integrity, security, performance or recovery.
• “We want to improve the product.” A user experience or design review can help identify changes, followed by separately scoped wireframes or visual designs.

For example, imagine a customer portal that looks polished but occasionally creates duplicate orders. A visual review might improve the screens while leaving the expensive problem untouched. The more relevant starting point is the order-processing logic, database rules and integration behaviour.

The sections below explain the available review areas. Examples are illustrative: they describe the kind of finding a review might produce, rather than findings from a named client.

Initial assessment and taking over a project

A quick, surface-level code review

A quick review samples the project to form an initial view. We might look at its structure, key files, setup instructions and obvious maintenance or security concerns.

Its value is speed: it can help you judge whether a deeper investigation is worthwhile and where to concentrate it. An initial observation might be that the project uses an unsupported framework, has no visible test setup, or appears to depend on configuration that has not been supplied.

Sampling leaves areas unexamined. A tidy repository can still contain serious faults, so an initial skim should not be treated as confirmation that the application is ready for launch or long-term support.

A focused takeover review

A takeover review asks a practical question: what would a new team need to operate and change this software responsibly?

Depending on the scope, that can include repository access, build instructions, configuration, hosting accounts, database access, deployment, important user journeys and known faults. The review should distinguish what has been demonstrated from what remains an assumption.

For instance, source code may be available while the live app depends on a developer's personal cloud account. Identifying that dependency gives you a concrete handover task. It does not automatically mean the product needs rebuilding.

The output might recommend proceeding, resolving specific blockers first, or investigating further before committing to ongoing work. See our code audit and app viability review for the service context.

Code quality, architecture and data

These checks explore how the software behaves and how readily a team can maintain it. Code quality concerns the implementation; architecture concerns how the larger pieces fit together.

Front-end code quality

The front end is the part of the application people use: screens, forms and interactions. A review can examine component structure, state handling, loading and error states, responsive behaviour and selected accessibility issues.

Consider a form that clears everything when the connection drops. The page may look excellent in a screenshot, but its behaviour costs users time. A useful finding explains how to reproduce the problem and where the implementation needs attention.

A front-end code review can flag usability and accessibility concerns. A detailed evaluation of either requires its own scope.

Back-end code quality

The back end applies business rules, processes requests and controls access to data. We can review selected areas for validation, permission checks, error handling, duplication and automated tests.

For an ordering system, we might examine what happens when a request is retried: does the system recognise the existing order, or create another one? Following that behaviour through the code gives more useful evidence than describing the implementation as “good” or “bad”.

Review depth depends on how much business logic exists and which workflows matter most. Critical calculations and transactions usually deserve more attention than rarely used administrative screens.

Database architecture, queries and data integrity

A database review considers how information is organised, related and retrieved. It can cover table structure, indexes (which help the database find records), expensive queries and rules that prevent invalid or inconsistent data.

A slow dashboard might be repeatedly scanning a large table. Duplicate customer records might point to missing uniqueness rules. These issues need different remedies, even though both involve the database.

Where performance matters, representative data and query measurements improve the evidence. Looking at a schema alone cannot establish how the application will behave with a much larger workload.

Back-end architecture and configuration

An architecture review looks across the system: where responsibilities sit, how components communicate and how configuration differs between development, testing and live environments.

Suppose a pricing rule is copied into several places. Updating one copy could leave the system applying different prices depending on the route taken. The architectural concern is that responsibility has become scattered.

The report may include a system overview, areas of tight coupling and practical changes that would make future development easier. Complexity alone is not a reason to rebuild; the question is whether it creates a material obstacle to the changes you need.

Static code analysis

Static analysis uses tools to inspect code without running the application. Linting checks agreed coding rules; other analysers may flag suspicious patterns, duplicated code or maintainability concerns.

These tools are useful for finding candidates for investigation. Their results need interpretation: a warning may be irrelevant in context, while an important business-rule error may produce no warning at all.

A useful report separates actionable findings from noise and explains the implications. A maintainability score can support discussion, but it cannot establish whether software is commercially viable or safe to launch.

Security, dependencies and integrations

Security review and penetration testing

A security-focused code review examines selected implementation choices, such as authentication, access controls, input handling and secret storage. Vulnerability scanning uses tools to look for known weaknesses. Penetration testing investigates a running system through authorised security tests.

Those approaches provide different evidence and may complement one another. They should not be bundled under a vague promise to “check security”. OWASP's Web Security Testing Guide provides a useful reference for understanding security testing.

For example, hiding an administrative button does not establish that the server rejects an unauthorised request. Testing that distinction requires an explicit scope, suitable accounts and permission to test the relevant environment.

The proposal should state the method, coverage, exclusions and reporting. Specialist penetration testing is separately scoped where required; a general code review does not certify that an application has no vulnerabilities.

Framework and library version checks

Applications usually depend on frameworks and libraries written by other teams. A version review identifies what is installed, which components are supported and where known advisories or upgrade obstacles warrant attention.

An older version is not automatically an urgent security incident. Equally, the newest version is not proof of safety. The relevant questions include support status, known weaknesses, how the component is used and the work needed to update it.

The report can distinguish routine maintenance from a larger upgrade. That helps you plan a realistic budget rather than discovering a major dependency change halfway through a feature.

Third-party dependencies and services

This review considers the external services the product relies on, such as payments, email, mapping, identity or AI providers.

Beyond software versions, we may need to understand account ownership, credentials, usage limits, recurring costs, data flows and what happens when a supplier is unavailable. A service that works through the departing developer's personal subscription is a business-continuity issue.

An inventory makes those dependencies visible. Any recommendation to replace a service should account for the migration work and the effect on users, rather than treating replacement as a small configuration change.

APIs and integration behaviour

An application programming interface (API) lets systems exchange information or request actions. An integration review examines selected interfaces and the behaviour around them: permissions, data mapping, timeouts, retries, duplicate messages and failed operations.

If a payment provider sends the same notification twice, the application should handle that deliberately. If a stock update fails, someone needs a way to discover the failure and recover.

The output can trace a data flow, identify fragile assumptions and recommend improvements. Access to documentation, test accounts and realistic examples makes this investigation more useful.

Performance, deployment and recovery

Performance and load testing

A performance review investigates where a system spends time or resources. Load testing measures how it behaves under an agreed simulated workload.

“Can it handle a thousand users?” needs unpacking. A thousand registered accounts create a different workload from a thousand people uploading files at once. We need representative actions, data volumes, expected concurrency and acceptable response times.

A report should record the environment, workload and measurements, then explain the bottlenecks found. Tests on a different environment or dataset may not predict live behaviour closely. Stress tests also need agreed safeguards because they can disrupt services or incur usage costs.

Infrastructure and deployment

This review examines how software reaches its hosting environment and how the team knows a release worked. It can cover hosting configuration, environment separation, secret handling, logs, monitoring and deployment automation.

Continuous integration and continuous delivery (CI/CD) pipelines automate selected build, test and release tasks. Their existence is useful only if the process works and the checks address relevant risks.

An illustrative finding might be that deployment depends on unrecorded steps on one person's laptop. A practical recommendation would explain how to make the process repeatable and how to recover when a release fails.

Disaster recovery and backups

A backup review asks what is copied, how often, where it is held, who can access it and what is required to restore service. Database records may be only part of the picture; uploaded files, configuration and other dependencies can matter too.

A successful backup notification establishes less than a completed restore exercise. The UK National Cyber Security Centre recommends testing backups and knowing how to restore them.

For a business that processes daily orders, the discussion should cover how much recent data it could afford to lose and how long it could operate without the system. Those needs guide the review. A recovery plan should record dependencies and responsibilities, with a restore test included where agreed.

Documentation and handover

Documentation should help another competent person work with the application. Useful material includes setup instructions, configuration requirements, deployment steps, important business rules, integration details and operational procedures.

The practical test is whether someone can follow it. A long document that omits an essential credential or manual step may still leave the next team stuck.

A review can identify gaps and check selected instructions against the system. Writing missing documentation or reconstructing undocumented behaviour may be additional work, so the scope should distinguish assessing the material from producing it.

Accessibility, user experience and presentation

Technical health and product usefulness overlap, but they need different questions. An application can run reliably while making a simple customer task unnecessarily difficult.

Accessibility

An accessibility audit examines barriers faced by people with disabilities. Depending on the agreed standard and coverage, it may combine automated checks with manual evaluation of keyboard use, focus, labels, contrast and assistive-technology behaviour.

For example, a modal window might look correct while trapping a keyboard user or failing to announce its purpose to a screen reader.

The W3C Web Accessibility Initiative explains that tools alone cannot determine whether a site meets accessibility standards. Agree the target standard, journeys, devices and evaluation methods. A limited review should describe its coverage clearly.

User experience

A user experience (UX) review follows the tasks people need to complete. It looks for confusing navigation, unnecessary effort, unclear messages and points where the user cannot see what to do next.

Imagine an app that accepts an application but gives no receipt or status. The software may have saved the record correctly, yet the customer submits again because they cannot tell.

Expert inspection, analytics review and research with users answer different questions. The scope should say which methods are included, with recommendations connected to the task affected.

Graphic design and visual consistency

A visual design review examines typography, colour, spacing, layout and the consistency of interface elements. It can help establish why a product feels difficult to scan or visually uneven.

Using the same visual treatment for a harmless secondary action and an irreversible action, for instance, can make the interface harder to interpret.

The report may recommend changes to the design language or reusable components. Producing a replacement interface is a separate design deliverable.

App store listings

An app store listing review considers the icon, screenshots, description and how clearly they explain the product to a prospective user. Competitor comparisons or listing experiments can be included where useful.

A screenshot might show an attractive screen without explaining the task it helps the user complete. Reworking that message is a concrete recommendation; predicting more downloads without evidence would be speculation.

The scope should distinguish a listing review from producing new creative assets, implementing analytics or running experiments.

Promotional websites and landing pages

A promotional-site review considers whether visitors can understand the offer, assess its credibility and take a relevant next step. It may examine message clarity, navigation, mobile usability and the enquiry or registration journey.

Recommendations should connect to an observed problem or a testable hypothesis. Analytics can help distinguish a poorly used link from a route that attracts a small number of valuable enquiries.

Reviewing a page does not establish the cause of every conversion issue, and implementing or testing changes needs its own allowance.

Logos and app icons

A focused logo or icon review can assess legibility, recognition, contrast and suitability at the sizes and crops where the asset appears.

An intricate illustration may work on a presentation cover and become unreadable as a small app icon. The recommendation might therefore concern simplification or creating variants for specific uses.

A complete identity redesign is separate work. It should follow an agreed brief rather than emerge unexpectedly from a code audit.

Planning improvements after the review

Wireframes for future requirements

Wireframes are simplified layouts that help agree how a proposed feature works before detailed visual design or development. They show structure, content and user interactions.

If a review uncovers a confusing approval process, wireframes might explore how a manager sees the request, makes a decision and handles an exception. That turns a broad recommendation into something stakeholders can inspect.

Creating wireframes is planning work, rather than a check of existing code. The proposal should identify the journeys and level of detail included.

Visual designs for future requirements

Detailed mock-ups establish the visual treatment of proposed screens: typography, colours, spacing, components and important states. They help stakeholders review an idea before implementation.

A polished mock-up does not prove that an integration works or that the design has been tested with users. Those questions still need evidence.

The number of screens, responsive variants, interaction states and revision rounds affects the work. App planning and scoping and UX/UI design can follow a review when there is a clear case for improving the product.

What should a useful review report tell you?

The report should leave you able to make a decision. Ask for a clear distinction between inspected evidence, likely risks and questions that remain unanswered.

For each significant finding, useful information includes:

• The observation: what was found and where.
• The consequence: how it could affect users, operations, security or future changes.
• The evidence: a code reference, reproduction steps, measurement or other supporting material.
• The priority and next action: what needs attention now, what can be planned, and what needs further investigation.

For example, “backup process needs improvement” leaves too much to interpretation. “Uploaded customer documents are outside the current backup job; include them and demonstrate a restore in a separate environment” gives the team a problem it can act on. This is an illustrative finding, not a claim about your system.

Agree whether remediation, retesting, detailed estimates and a discussion of the findings are included. Finding an issue, fixing it and confirming the fix are distinct pieces of work.

How review depth affects cost

Cost follows the evidence needed, the size and complexity of the system, and how readily the team can inspect it.

A small repository may still be difficult to assess if it cannot be built, essential access is missing or business rules live only in someone's memory. A larger, well-documented application may be easier to investigate within a clearly defined scope.

The scope should identify the areas covered, the depth of sampling or testing, access requirements, deliverables and exclusions. If an early finding suggests more work, we can discuss that before extending the review.

When budget is limited, prioritise the checks that could change your immediate decision. An initial review can identify questions for a later investigation. Keep those unanswered questions visible when deciding what to launch, support or fund.

Choosing your next step

Bring us the decision you are trying to make, the problems you already know about and any constraints on access or timing. We can then recommend a proportionate review.

If a project has stalled, our app rescue service may be relevant. If you want to understand whether existing software is a sensible foundation for further investment, start with a code audit and viability review.

Talk to Scorchsoft about your application.