A good mobile app supplier is not the one with the most polished pitch deck. It is the team that can turn an operating problem into a buildable scope, explain what it will own, and show how the app will be tested, released and supported.
For a South African business appointing mobile app developers, compare candidates on delivery evidence rather than feature lists alone. Ask each supplier to respond to the same short brief, score the responses against the same criteria, and record assumptions that could change scope. That makes a decision defensible when quotes differ widely.
This is a procurement guide, not legal, security or financial advice. It supports the choice of a development partner and links to Galactic Digital’s mobile app development service for South African businesses, the canonical service page for people looking to appoint a team.
Start with the job the app must do
Before comparing suppliers, write one sentence that describes the operational change you need. For example: "Customers must be able to book an available appointment, pay where required and receive a confirmed booking without staff re-entering data." That exposes the systems, users and failure points involved.
Then list the first release’s user roles, the actions each role can take, the data each action reads or changes, and the systems the app must connect to. A booking app might need customer accounts, a scheduling source of truth, payment status, reminders and staff permissions. A field-service app might need offline behaviour, device permissions and a way to resolve conflicting updates after a connection returns.
If those answers are still moving, buy a discovery and scope phase before committing to a fixed feature set. Galactic Digital’s mobile app development brief template is a useful starting point for documenting journeys, integrations and acceptance tests.
A weighted scorecard for supplier selection
Give every candidate the same brief and score each row from 0 to 5. Multiply the score by the weighting. A 0 means the response is absent or unusable; a 3 is credible but incomplete; a 5 is specific, testable and backed by relevant evidence. Do not use the total as an automatic winner. A low score on ownership, security or release readiness can be a reason to stop, even if the total is high.
| Area | Weight | What a strong response contains | Warning sign |
|---|---|---|---|
| Problem and scope | 20% | Named users, journeys, exclusions, dependencies and acceptance tests. | A feature list with no user flow, owner or definition of done. |
| Architecture and ownership | 20% | Why the proposed client, backend, hosting and integrations fit the job; who owns source code, cloud accounts, domains, store accounts and credentials. | A platform claim with no exit path or account ownership terms. |
| Security, privacy and access | 20% | Threats considered, authentication, permission model, data retention, incident contact and a plan to test material controls. | A generic statement that the app will be secure. |
| Delivery and quality | 15% | Milestones tied to working software, test environments, device coverage, defect handling and a release checklist. | Dates without dependencies, acceptance criteria or a test approach. |
| Store and launch readiness | 15% | Named owner for Apple and Google accounts, review access, privacy disclosures, release signing and rollback. | Store submission left for the final week. |
| Support and commercial terms | 10% | Change control, response boundaries, handover material, post-launch support and assumptions behind the quote. | An all-inclusive quote with no treatment of changes or third-party fees. |
Keep the scoring sheet with the proposals. It records why a supplier was chosen and prevents a cheap initial number from hiding work that has merely been omitted.
Ask for evidence that survives handover
A supplier should be able to describe the technical shape of the app before development begins. That does not require a fully designed product. It does require decisions about ownership and boundaries.
- Ask which organisation will control the Apple App Store Connect account, Google Play Console account, domain names, cloud tenant, payment accounts and source-code repository. The contract should name the account holder and the handover process.
- Ask for a diagram that separates the mobile app, API, database, identity provider, notification service and external systems. Mark which party owns each part.
- Ask how development, test and production environments differ, how secrets are stored, and who may deploy to production.
- Ask for acceptance tests written in business language. A logged-in customer can cancel a booking before the configured cutoff and the source booking system reflects the change is testable. Booking management works is not.
- Ask what documentation arrives at handover: repository access, deployment notes, environment inventory, architecture diagram, third-party account list and runbook for routine releases.
These questions are useful whether a supplier proposes Flutter, React Native or native iOS and Android work. The platform choice should follow device features, offline needs, team skills, release cadence and the cost of maintaining two codebases. For that separate decision, see Galactic Digital’s native versus cross-platform mobile app checklist.
Make security and privacy review part of the quote
Security cannot be inferred from a framework name. The OWASP Mobile Application Security Verification Standard groups mobile controls around storage, cryptography, authentication, network communication, platform interaction, code quality, resilience and privacy. It gives a buyer a better prompt than asking whether an app is secure. Ask which control groups apply to the planned app, which tests are included, and which risks sit outside the agreed scope.
For an app that processes personal information in South Africa, bring the responsible business’s privacy and legal advisers into discovery. The Information Regulator says private and public bodies must register their Information Officers under section 55 of POPIA, and describes duties that include maintaining a compliance framework and conducting a personal-information impact assessment. A development supplier can implement agreed controls, but it should not silently become the business’s legal decision-maker. The regulator’s POPIA guidance and resources should inform that conversation.
Useful quote questions include: Which data is stored on the device? Which data crosses the network? Can a user export or delete account data where required? Which staff role can access customer records? How will test data be protected? The answers should appear in the scope, not remain in an email thread.
Check app-store work before the build is done
Store release is a workstream with owners, credentials and review access. Google requires developers to complete app-content declarations, including a privacy policy, target audience, ads, sensitive permissions and sign-in details where relevant. Its Prepare your app for review guidance says a privacy policy must be linked in the store listing and in the app for apps that request sensitive permissions or data. Apple publishes separate App Review Guidelines.
During procurement, ask the supplier to identify the items that need a real account holder: store agreements, app signing, privacy-policy URL, support URL, reviewer login, test device access and release approver. A business that owns those accounts can change suppliers without losing control of its distribution channel.
Run a short supplier workshop before appointment
Invite the final one or two candidates to walk through one difficult journey from the brief. Use a real scenario, such as a customer with a poor connection updating a booking while a staff member changes the same booking in the back-office system. Ask the supplier to explain the expected behaviour, the source of truth, what the user sees when the action fails, and how the case will be tested.
This workshop reveals more than a generic capability deck. It tests whether the team can separate a product decision from a technical decision, name an assumption, and explain a trade-off without hiding behind jargon.
What to put in the appointment pack
- The approved problem statement, user roles and first-release boundaries.
- The weighted scorecard and each supplier’s completed response.
- A list of integrations, account owners and third-party costs that need confirmation.
- Acceptance tests for the important journeys and a named person who can approve them.
- A delivery plan with decision points for design, build, test, store submission and launch.
- A handover and support schedule, including repository access and production credentials.
Galactic Digital builds iOS and Android products, backends and integrations from Cape Town for businesses across South Africa. If you have a brief and need a technical review of the proposed scope, use the Galactic Digital project contact page to share the problem, existing systems and intended first release.
Sources
- OWASP MASVS, OWASP Mobile Application Security Project, accessed 12 October 2026. Supports the mobile security control groups used in this guide.
- POPIA resources, Information Regulator South Africa, accessed 12 October 2026. Supports the Information Officer and privacy-governance references.
- Prepare your app for review, Google Play Console Help, accessed 12 October 2026. Supports the Google Play app-content and privacy-policy references.
- App Review Guidelines, Apple Developer, accessed 12 October 2026. Supports the Apple store-review reference.
Featured image: Black smartphone in hand by Dennis Cortés licensed under CC0 1.0 Universal.