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WassliSystems
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WassliSystems
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Custom development

Android and iOS apps for field teams, customers and staff.

Field service apps that work without signal, customer apps that show live account data, and internal tools that replace paper and WhatsApp groups. Native or cross-platform, chosen per project, and connected to your CRM or ERP.

  • React Native
  • Flutter
  • Swift
  • Kotlin
  • Offline sync
  • Push notifications
  • App Store & Google Play
  • MDM deployment

01 — The problem

Why this usually goes wrong.

Field teams fill paper forms and WhatsApp groups, and the office re-keys everything.

Customers expect to book, pay and track from their phone.

Scope

What the engagement covers

Field service apps

Job lists, routes, check-in and check-out, photos, signatures, checklists and parts used, synced back to the CRM. They work offline and sync when signal returns.

Customer apps & portals

Bookings, orders, account statements, service requests and notifications, connected to the same back end as your web portal.

Internal tools

Approvals, inspections, stock counts and timesheets for staff, distributed through the stores or privately through device management.

Native vs cross-platform

Cross-platform (React Native or Flutter) for most business apps, from one codebase. Native Swift or Kotlin where heavy device features or performance demand it.

Store release & maintenance

App Store and Google Play submission, review handling, OS-version updates and crash monitoring.

Method

How we deliver it

01

Scope

Users, offline needs, device features and integrations defined.

02

Prototype

Clickable screens tested on real phones with real users.

03

Build

Iterative releases to TestFlight and internal tracks.

04

Release

Store submission, rollout and monitoring.

Straight answer

Do you need an app at all?

If your users sit at desks or visit occasionally, a responsive web portal is cheaper to build and maintain than an app. We’ll tell you when that’s the case.

Apps earn their cost for field teams who need offline access, the camera, GPS or barcode scanning, and for customers who use your service weekly.

Every app needs updates for new iOS and Android versions each year. We price maintenance up front so it’s not a surprise.

04 — Typical effort

What it usually takes.

Ranges from comparable projects. You get a fixed-scope quote after a 30-minute call.

Prototype2–3 weeks
Cross-platform app, first release8–14 weeks
Store release and maintenancemonthly

05 — What you own

Yours at handover.

  • App source code
  • Store listings under your accounts
  • Back-end and APIs
  • Release runbook

FAQ

Questions we get about mobile apps

Native or cross-platform?

Cross-platform suits most business apps and halves the codebase. We recommend native when the app depends on heavy device integration, complex animation or platform-specific features.

Can the app work offline?

Yes. Field apps store jobs and forms locally and sync when connectivity returns, with conflict handling for records edited in two places.

Do you publish to the App Store and Google Play?

Yes, under your developer accounts. For internal apps we can distribute privately through Apple Business Manager, managed Google Play or your MDM.

Can the app connect to Zoho or Salesforce?

Yes. Field and customer apps commonly read and write CRM records directly, so office and field teams work from the same data.

Related

Often paired with

Next step

Start with a 30-minute call.

Tell us what you run today and where it breaks. You get a fixed-scope quote afterwards. We don’t publish rates, because the honest price depends on scope.

Enquire

Talk to us about Mobile app development, Android & iOS.

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