A custom app for your professionals: engineers on site, sales reps with clients, buyers at a trade fair. With SSO, role-based access, offline mode and integrations with your ERP and CRM, so the work carries on wherever the user is.
The user is a professional who opens your app daily or weekly to get work done: placing an order, handing over an installation, approving a quote. Speed, reliability and context matter more than visual wow-factor. A hiccup costs money directly or slows a process somewhere along the chain. That changes how you design an app, how you build it and how you maintain it.
That's why, for a B2B app, we start with flows: what does the user need to do, in what order, and under what conditions (no signal, time pressure, wearing gloves)? And with integrations: which systems need to supply or receive data so the app doesn't become an island? Compared with a consumer app, the focus shifts towards authentication, role management, ERP integrations and audit trails.
We build B2B apps for service organisations, B2B brands, trade associations and enterprises. Sometimes a new app replaces a set of spreadsheets and emails; more often it sits alongside existing systems and opens up precisely the part where mobile access makes the biggest difference: the fitter on the building site, the buyer at the trade fair, the manager approving a quote on the move.
The ROI of a B2B app rarely lies in "nicer mobile working". It lies in less time per administrative task, fewer errors in orders, earlier invoicing because a job is completed on the spot, or more revenue per sales representative because they carry a complete catalogue with them. We measure those effects from day one, not to turn them into marketing material, but to base the priorities for the next sprints on them.
Different target groups call for different architectures. We advise which type suits you in the first conversation.
For engineers, installers and inspectors on site. Retrieving work orders, taking photos, capturing the customer's signature, carrying on offline in a cellar or gutter, and syncing automatically once there is signal. Integrates with your scheduling and invoicing system, so the back office sees in real time what is happening in the field, without the engineer having to type up a report.
For sales reps, key account managers and wholesale buyers. A catalogue with customer-specific pricing, an order book that also works on a trade-fair floor, integration with CRM and ERP, and in-app chat with the back office. Suited to distributors, dealer networks and B2B brands with a fixed customer base that want to simplify their ordering process without losing control of the customer relationship.
Mission-critical app with multiple organisational contexts in one codebase: a white-label app for a trade association, an approval app for a mid-sized corporate, or an onboarding app for a large employer. Deep integration with several systems, an audit log, and sector-specific compliance requirements. Often accompanied by a dedicated admin portal in which your IT or operations team manages tenants, users and branding settings themselves, without needing to call us.
Four building blocks that recur in almost every B2B app, and that a consumer app usually does not need.
A selection of target groups for which a dedicated B2B app becomes worthwhile. If you recognise one of these patterns, we would be glad to talk further.
Field service management apps for service organisations, installation engineering and maintenance. Work orders, time registration, material usage, customer signature and an automatic invoicing trigger once a job is completed. See also our field service app page.
Catalogue, customer-specific pricing and an order book for sales reps and distributors. Syncs with CRM and ERP, works on a trade-fair floor with patchy Wi-Fi, and accounts for volume discounts per customer, contract prices and seasonal agreements that do not belong in a general price list.
Wholesale order books for trade fairs (ISPO, PV shows, MIPIM), procurement apps for mid-sized corporates with approval workflows, and PunchOut/cXML integration with enterprise procurement platforms such as Coupa, SAP Ariba and Ivalua, so your customers can order through their own e-procurement systems.
Apps for contractors, subcontractors and project managers. Work packages, time registration, handover items, photos per construction site, and integration with construction administration packages. You can also read about our approach to the contractor app.
Healthcare apps under NEN 7510 (for healthcare professionals, not directly for patients), and laboratory apps for sample tracking with an audit trail. Strict logging, encryption and role-based access per department, along with clear agreements on processing, hosting and data residency.
HR onboarding apps for new employees (employee retention) and corporate L&D apps for mandatory training, certification and compliance tracking, often integrated with an LMS or HR system such as AFAS, Workday or SuccessFactors for automatic source data and expiring certifications.
Together we map which flows the app must support, which users will work with it, and which systems already hold data we can reuse. We often find at this stage that a considerable share of the wishes is already covered by existing system functionality, so we do not need to rebuild it. We also speak with a handful of future end users; their feedback on how they currently do their work often yields better requirements than an internal workshop alone.
A short technical sprint in which we settle the key decisions: cross-platform or native, which auth provider, and how we connect to your ERP and CRM. We often build a working auth flow and one integration stub at this stage, so we know the difficult parts work before we schedule feature work.
A working build every two weeks, tested by your key users and, where possible, by real users in the field. We work from a prioritised list rather than a fixed scope: whatever proves valuable in practice takes precedence over what was in the original document.
A phased rollout to a pilot group: one region, one customer segment or one tenant. Sentry or Bugsnag for crash monitoring, Datadog or Mixpanel for usage. We measure what users actually do, and adjust where our assumptions turn out to be wrong.
Release to the App Store and Google Play, with automated builds via Fastlane or App Center. For enterprise distribution, MDM/MAM (Intune, Jamf, VMware Workspace ONE) or a private internal store is also an option. After that, ongoing management: security patches, OS updates, and further development based on usage data and new features. With a dedicated support team that knows the app and can reach your IT organisation quickly in the event of an incident.
With OneDayBuild, we turn your idea into something tangible in one day for €1,150, so you can see whether further development is worth the investment. Decide to go ahead with the full build? Then we credit the full cost.
Explore OneDayBuild →Not every B2B app needs to be built from scratch. We are honest about when a standard platform will do, and when custom development is worth the investment.
If your workflow runs almost entirely within Salesforce CRM and you only need a mobile shell, Mobile Publisher is usually the faster route. You keep the Salesforce data models and Lightning UX, inside your own branded container. We don't replace it for commodity CRM mobile use.
SAP-only workflows often work perfectly well through Fiori apps on SAP Mobile Services. We only become relevant when your app needs to do something beyond SAP, requires a user experience that Fiori doesn't offer, or when you want to bring several systems together in a single user experience.
Low-code platforms are strong for form-heavy mid-office apps. Limitations arise with offline working, complex UX, niche hardware (barcode scanners, NFC, BLE printers), or when per-user licence costs at scale exceed the custom development budget. Native push notifications and deep linking are also sometimes limited.
Deep integration with several systems at once (ERP + CRM + DMS + IoT), sector-specific compliance (NEN 7510, FSM, construction collective agreement), a genuine offline mode, white-label for an industry body, or AI-augmented features that a standard platform cannot support. A combination is often the right choice: low-code for the office modules, and a custom app for the part that faces outwards.
React Native or Flutter for cross-platform: one codebase, two platforms, rapid iteration. Native iOS (Swift) or Android (Kotlin) when performance, security or platform-specific hardware is critical (think payment apps, biometrics, complex BLE integrations).
Cloud-native on AWS, Azure or GCP. Node.js, Spring Boot or .NET, depending on where your IT organisation has experience. We would rather deliver a backend your team can maintain than an exotic stack that proves we were right.
Firebase Auth, AWS Cognito, Auth0 or a self-hosted Keycloak for identity. Fastlane, App Center or GitHub Actions for CI/CD. Sentry, Bugsnag or Datadog for crash and performance monitoring in production.
GDPR compliance is always the baseline. On top of that: NEN 7510 for healthcare B2B apps, ISO 27001 as the general security standard, the EU AI Act where AI functionality is involved, CSRD for sustainability reporting, and the EAA/WCAG for accessibility, as B2B apps increasingly need to be accessible to employees with disabilities too. We map out the compliance requirements early in the project so that logging, encryption and data flows are set up correctly from the start.
Certificate pinning against man-in-the-middle attacks, jailbreak and root detection where relevant, short-lived session tokens with a refresh flow, secure on-device storage for sensitive tokens and data, and code obfuscation for the release build. For healthcare and finance apps, we routinely commission an external penetration test in the final sprint before go-live, plus SAST/DAST scanning in the CI pipeline.
No marketing pushes, but relevant business triggers: a quote has been approved, a delivery is scheduled, an approval is waiting for you, an SLA is at risk of being breached. Configurable per user and per channel type (push, email, in-app, SMS), with a log of what was sent, so customer service can see what a user actually saw.
What clients usually ask us before we start on a B2B app.
A no-obligation introductory chat of half an hour. Tell us about your user group, your existing systems and the flows you want in an app — we ask questions, give direction, and are honest about when custom development pays off and when a standard platform already does the job.
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