HOPIN.IT
A technician's gloved hand holding a rugged tablet with a service checklist, next to an industrial pump
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Home / Services / Mobile apps

Mobile app development

Signed on site.In the ERP before the van left.

We build iOS and Android apps for people who work away from a desk. And for customers who would rather tap than call. Every app talks to the systems you already run.

Free blueprint · in your inbox within a few hours · no call needed

  • Senior team, you keep the code
  • EU data, GDPR-first
  • Fixed-price start
Sound familiar?

The form is filled in on Monday. It gets typed up on Thursday. The customer reads the report next week.

Your people do good work in the field. The delay is in the paper trail around it. Forms go missing. Photos sit on personal phones. The office calls to ask if a job is done.

Show me examples for

Pick one. The examples on this page will switch to it.

What we build

Apps for the people who are never at a desk.

Each app does one job well for your team or your customers. The data it captures goes straight to the system that needs it.

01

Field service and inspections

  • BeforePaper forms. Photos on personal phones.
  • AfterChecklists, photos and signatures captured on site and synced to the office.
02

Delivery and driver apps

  • BeforeProof of delivery on paper. Status updates by phone.
  • AfterScan, photo, signature. The ERP and the customer see the new status at once.
03

Customer apps

  • BeforeCustomers phone you about orders, bookings and invoices.
  • AfterThey check, book and reorder in your app, day or night.
04

Sales rep apps

  • BeforeA PDF catalogue. Orders written up in the evening.
  • AfterLive stock and prices. The rep sends the order from the customer’s office.
05

Warehouse and floor apps

  • BeforeStock counts on clipboards. Shift handovers in a group chat.
  • AfterEverything scanned on handhelds, with roles and a record of who did what.
06

Rebuilding an outdated app

  • BeforeThe app crashes, and nobody wants to touch the code.
  • AfterRebuilt for current iOS and Android. Your users keep their data.

It connects to what you already run: your ERP, CRM, field-service or ticketing system, and your own APIs.

iOSNative Swift and SwiftUI

For iPhone and iPad fleets. Best when the app relies on the camera, scanning or offline storage.

AndroidNative Kotlin

For the rugged handhelds and scanners that warehouses and plants really use.

BothKotlin Multiplatform

One shared core for business rules, data and sync. Native screens on each platform.

A long warehouse at night, conveyors lined with parcels
One service visit, on paper and in the app

A paper form. Five days to the customer.

Filled in on site. Driven back to the office. Typed into the ERP. Then emailed. Each step waits for a person.

The job is on the tablet before the visit.

The address, asset history and checklist download in the morning. The app works with no signal.

Every reading lands in the right field.

Required checks cannot be left blank. Each photo attaches to the line it belongs to.

Signed on the glass.

The customer signs on site. The app builds the report from what the technician captured.

In the ERP before the van leaves.

The app syncs as soon as it finds signal. The office sees the report, and the invoice can go out the same day.

IllustrativeSame dayfrom visit to report in the customer's inbox
Before

SERVICE REPORTNo. ____

SITEPlant 2, hall B
ASSETPump P-12
SEALok?
VIBR.2,1
TEMP.61
SIGNED~ M.

retype into ERP → Thu

After
09:41
Today · job 3 of 5

Quarterly inspection

SitePlant 2, hall B
AssetPump P-12
Last serviced14 March, seal replaced
Available offline
Start checklist
Pump P-12 · checklist

5 of 5 done

Seal leak check✓
Vibration 2.1 mm/s✓
Bearing temp. 61 °C✓
Filter replaced✓
Photos 2✓
Pump P-12 · close job

Photos and signature

seal.jpg
filter.jpg
Customer signature
Sign and close
✓

Report SR-2291 sent

Synced 14:32

Posted to the ERP✓
PDF emailed to the customer✓
Ready to invoice✓
Next job · 11:30
Screens and timings illustrative
How a project runs

Start with a fixed price. Put one real flow in real hands before you commit to more.

You can stop after any step and keep everything we built.

1–2 weeks · fixed price

Sprint

We follow one job from start to finish. Together we agree what version one of the app must do.

4 weeks · fixed scope

Pilot

One flow on real devices, used by a pilot group. Connected to your systems and measured.

When the pilot pays

Integrate

Roll out to every team and add the next flows. Publish to the app stores or to company devices.

Monthly

Operate

OS updates, monitoring, fixes and improvements. The code stays yours whatever you decide.

What it costs

No hourly meter. You see the price before each step.

Every step is priced on its own, in writing. You can stop after any of them and keep what we built.

  1. BlueprintFree

    A written plan for one process, including what the manual work costs you today.

  2. SprintFixed price

    We follow one job from start to finish and agree what version one does. Quoted in writing after a free call.

  3. PilotFixed price, fixed scope

    One flow on real devices, used by a pilot group. Connected to your systems and measured.

  4. OperateMonthly fee

    OS updates, monitoring, fixes and improvements. The code stays yours whatever you decide.

What moves the price

  • Platforms: iOS, Android or both
  • Offline use, and device features like camera, scanning and signatures
  • Links to your back-office systems
  • How much design, and how many screens

The blueprint shows what the manual work costs you a year, so you can weigh any quote against it before you spend anything.

Want this for one of your processes?

Tell us the process. The free blueprint is in your inbox within a few hours.

Honestly

When we're the right team, and when we aren't.

A good fit if

  • Your people work in the field, on the floor or on the road, and every job ends in paperwork.
  • Your customers phone you for things they could check or do themselves.
  • The data must land in an ERP, CRM or field-service system you already run.
  • You want to own the app, the code and the store accounts.

Not a fit if

  • An off-the-shelf app already covers almost everything. If so, we'll say it.
  • Your team still disagrees on how the job should flow. Start with product discovery.
  • You want a fixed price for the whole app before anyone has mapped a single job.
  • You need a guaranteed store release next week. We move as fast as we can, but store review is out of our hands and can take days.
Questions owners ask

Before you book a call.

What does it cost?

The blueprint is free. The 1–2 week sprint and the 4-week pilot each have a fixed price, quoted in writing before you commit. After launch, a monthly fee covers OS updates, monitoring and fixes. We price by scope, not by hours. Four things drive it: the platforms, how much must work offline, how many back-office systems the app connects to, and how much design it needs.

Native or cross-platform?

We go native, with Swift and SwiftUI on iOS and Kotlin on Android, when the app relies on the camera, scanning, offline work or long daily use. We choose Kotlin Multiplatform when one shared core for rules, data and sync makes sense, with native screens on each platform. We recommend one in the Sprint and write down why.

Does it work without signal?

For field teams, we plan for it from day one. Jobs, forms, photos and signatures are saved on the device. They sync when the connection returns. If two people change the same record, a rule we agree with you decides what happens.

How does the app get onto our staff's devices?

Internal apps can go privately to company devices. We use Apple Business Manager, managed Google Play or the device management you already have. Customer apps go to the App Store and Google Play under your own developer accounts.

Do we own the code?

Yes. The code, the designs and the store listings are yours, in your accounts. If you stop working with us, another team can take the app over.

Is our data safe under GDPR?

We are an EU company based in Poland. By default the app's back end runs on EU-hosted infrastructure, and personal data stays in the EU wherever possible. In the Sprint we document what data the app collects, where it is stored and who can see it.

How soon will people use it?

The Opportunity Sprint takes 1 to 2 weeks at a fixed price. Then a 4-week pilot puts one real flow on real devices, in the hands of a pilot group, and we measure the result together. Full rollout comes once the pilot proves it is worth it. If you already have documentation and agreed requirements, we skip the sprint: a focused app can be built in a couple of weeks, and a very simple one within a week of the signed contract.

Free · in your inbox within a few hours

Tell us which process eats your week. Get a free automation blueprint.

  • Process breakdown
  • Automation options
  • 4-week pilot plan
See a sample blueprint (PDF) · Illustrative, for a fictional company

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