{"id":1006341,"date":"2026-07-20T13:50:21","date_gmt":"2026-07-20T11:50:21","guid":{"rendered":"https:\/\/www.iterates.be\/?p=1006341"},"modified":"2026-07-17T08:32:21","modified_gmt":"2026-07-17T06:32:21","slug":"how-to-test-an-app-before-its-launch","status":"publish","type":"post","link":"https:\/\/www.iterates.be\/en\/how-to-test-an-app-before-its-launch\/","title":{"rendered":"How to test an app before its launch"},"content":{"rendered":"
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An app that has been carefully developed may fail at launch if the tests<\/strong> have been rushed. Yet this phase is often the first to be sacrificed when under pressure to meet deadlines, and is one of the most common causes of critical post-launch bugs and costly emergency fixes. Here\u2019s how to structure a robust testing strategy tailored to the resources of an SME.<\/p>\n\n\n\n

Understanding the different types of tests<\/strong><\/h2>\n\n\n\n

Testing an application involves more than just clicking a few buttons to check the main features. There are several categories of tests, each serving different purposes and working together to cover all potential risks before launch.<\/p>\n\n\n\n

Functional, regression and load testing<\/strong><\/h3>\n\n\n\n

The functional tests<\/strong> check that each feature behaves as expected in the defined scenarios. Regression tests ensure that a new change has not broken what was previously working. Load tests, on the other hand, simulate a volume of concurrent users to verify that the application can handle the increased load without any degradation in performance \u2013 a particularly critical consideration for a launch where a traffic peak is anticipated.<\/p>\n\n\n\n

Manual testing and automated testing<\/strong><\/h3>\n\n\n\n

The manual tests<\/strong> enable you to explore the application just as a real user would. Automated tests, run every time the code is changed, ensure that a stable core set of features remains intact throughout the iterations. A QA consultant specialising in test automation<\/strong><\/a> implements these continuous validation pipelines, which detect regressions within minutes rather than over several days.<\/p>\n\n\n\n

Test the user experience before writing the code<\/strong><\/h2>\n\n\n\n

A common mistake is to test only the technical logic of the application, whilst overlooking the fact that the user experience is just as critical. A confusing interface or a poorly designed user flow leads to users abandoning the application, even if the underlying code is flawless.<\/p>\n\n\n\n

Approve the mock-ups before development begins<\/strong><\/h3>\n\n\n\n

The best way to test the user experience without spending money on development is to present interactive prototypes to real users. A UX\/UI consultant<\/strong><\/a> designs these clickable prototypes, which help to identify friction points in the user journey before a single line of code has been written.<\/p>\n\n\n\n

Iterative user testing during development<\/strong><\/h3>\n\n\n\n

User testing does not only take place before development begins. Carrying it out with a representative group at each iteration helps to identify adoption issues early on \u2014 whilst they are still inexpensive to fix.<\/p>\n\n\n\n

Organising the acceptance testing phase prior to launch<\/strong><\/h2>\n\n\n\n

The acceptance test is the formal validation phase that immediately precedes the launch. It should not be a mere quick check, but a structured process that covers all the application\u2019s critical workflows.<\/p>\n\n\n\n

Define a test plan covering the critical paths<\/strong><\/h3>\n\n\n\n

A test plan sets out the scenarios to be tested, the data used, the expected results and the acceptance criteria. Each critical workflow must be tested in a number of different configurations: different browsers, various screen sizes and slow connections. For a customised mobile application<\/strong><\/a>, this includes testing on the main versions of iOS and Android and the devices most commonly used by the target audience.<\/p>\n\n\n\n

Involving real users in the acceptance testing<\/strong><\/h3>\n\n\n\n

Internal testing is useful but not enough. Team members know the application too well to spot what a novice user might find confusing. A small group of representative users provides an outside perspective that reveals blind spots that are invisible from within the project.<\/p>\n\n\n\n

Incorporate security testing before going live<\/strong><\/h2>\n\n\n\n

An application\u2019s security cannot be verified after it has been launched. Vulnerabilities exploited by attackers are rarely introduced deliberately: they result from common development choices that have not been tested from this specific perspective.<\/p>\n\n\n\n

What an application security test covers<\/strong><\/h3>\n\n\n\n

A technical and security audit<\/strong><\/a> Prior to launch, check for SQL injection, authentication vulnerabilities, session management, protection of data in transit and access permissions. For an application that handles personal data or financial transactions, this audit is essential before the application is made available to the public.<\/p>\n\n\n\n

Also test for error cases and edge cases<\/strong><\/h3>\n\n\n\n

Security testing also covers unexpected behaviour: what happens if a user enters malformed data? What if a session expires in the middle of a transaction? What if the server responds more slowly than expected? These borderline cases<\/strong> are often overlooked during the testing phase, and that is precisely where the most exploitable vulnerabilities lie.<\/p>\n\n\n\n

Adopt a phased validation approach<\/strong><\/h2>\n\n\n\n

For innovative projects, or those where market demand has not yet been fully validated, launching a fully-fledged application without first testing the concept is a major risk. Incremental validation allows key assumptions to be tested at a lower cost.<\/p>\n\n\n\n

Launch a closed beta before the public launch<\/strong><\/h3>\n\n\n\n

A closed beta launch allows the app to be made available to a limited group of real users, in a production environment, before it is fully rolled out. The feedback gathered during this phase enables the final bugs to be fixed and the user experience to be fine-tuned before the product is rolled out to the entire target audience.<\/p>\n\n\n\n

Validate the concept with an MVP before developing the full product<\/strong><\/h3>\n\n\n\n

If the uncertainty relates to actual usage rather than to the technical aspects, a MVP or a POC<\/strong><\/a> enables fundamental assumptions to be tested with minimal investment. This early validation prevents the need to test a fully developed product that nobody wanted.<\/p>\n\n\n\n

Test your application with iterates<\/strong><\/h2>\n\n\n\n

iterates incorporates phases of QA and automated testing<\/strong> at every development sprint, and supports Brussels-based SMEs in implementing testing strategies tailored to their specific circumstances and resources. From functional testing to security audits, every launch undergoes a structured validation process before going live.<\/p>\n\n\n\n

Book a free appointment with an iterates expert<\/a><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

Une application d\u00e9velopp\u00e9e avec soin peut \u00e9chouer \u00e0 son lancement si les tests ont \u00e9t\u00e9 b\u00e2cl\u00e9s. Pourtant, cette phase est souvent la premi\u00e8re sacrifi\u00e9e sous la pression des d\u00e9lais, l’une des causes les plus fr\u00e9quentes de bugs critiques post-lancement et de corrections d’urgence co\u00fbteuses. Voici comment structurer une strat\u00e9gie de test solide, adapt\u00e9e aux ressources…<\/p>","protected":false},"author":1,"featured_media":1006344,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1238],"tags":[],"class_list":["post-1006341","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-developpement-dapplication"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t