Service

Custom Apps & Integrations

When a template or a SaaS tool cannot do the job, we build the portal, booking, quoting, or internal tool that can, and connect it to the software you already run so a record entered once shows up everywhere. You own the code. No license fees, no lock-in.

Book a Free 30-Minute Call

Web Applications

Customer portals, booking and quoting systems, and SaaS-style products built with Next.js, React and TypeScript on a PostgreSQL database. The app works on desktop, tablet and phone, and can be installed as a progressive web app when your users need it offline.

  • Roles, user journeys and acceptance criteria written down and approved before code starts
  • A typed API between the screens and the database, so both sides agree on every record
  • Working builds on a staging address you can click through during the project
  • Error tracking and product analytics set up at launch, with operating notes you keep

Mobile Apps

iOS and Android apps for your customers or your field team. React Native with Expo lets one codebase serve both platforms; native Swift or Kotlin fits apps that need deep device features. We weigh that choice against your app before recommending one.

  • Sign-in, push notifications and deep links planned from the start
  • Offline-first storage when your users work without a signal
  • Test builds through TestFlight and Google Play internal testing before release
  • App Store and Google Play submission handled, with the developer accounts in your name
  • Small fixes shipped as over-the-air updates; native changes go through store review

Internal Tools

Admin dashboards, approval queues, inventory and project trackers that replace the spreadsheet your team copies data into. Example scope: replace a spreadsheet-based approval queue with a role-based workspace that pulls records from your CRM, records decisions, and flags exceptions for a human reviewer.

  • We map how the work actually happens before choosing a tool
  • Retool or Appsmith when speed matters most, a custom Next.js app when you need full control (Retool carries its own per-user license; Appsmith can be self-hosted; a custom app has none)
  • Roles, permissions and the events that must be logged agreed before the build
  • Single sign-on scoped to the identity provider you already use

Integrations That Keep One Record

A new lead should not get typed into the CRM, the calendar, and the invoice tool by hand. We connect the software you already run so data moves once and everyone sees the same record, with a written plan for what happens when a step fails.

  • CRM (Salesforce, HubSpot, Pipedrive)
  • ERP (SAP, NetSuite)
  • Accounting (QuickBooks, Xero)
  • E-commerce (Shopify, WooCommerce)
  • Marketing (Mailchimp, Klaviyo)
  • Project management (Asana, Monday.com, Jira)

API Development

APIs that let your applications talk to each other, to partners and to third-party services, built with Node.js and TypeScript or Python. We can also put a modern API in front of an older system so new tools can use it.

  • Contract first: every endpoint, permission and error written as an OpenAPI 3.1 or GraphQL schema before code
  • REST for simple records and caching, GraphQL when different screens need different data
  • OAuth 2.0, API keys or short-lived tokens, with rate limits and quotas
  • Integration tests for every endpoint, reference docs generated from the spec, and versioning with a deprecation window

Data Sync

Keep customers, orders, inventory and invoices consistent between your CRM, ERP, online store and accounting software. We decide with you what counts as a match and which system wins when both change.

  • Real-time sync through webhooks, near-real-time polling, or a nightly batch, chosen by how fresh the data must be
  • Conflict rules agreed up front: last write wins, one source of truth, or a field-by-field merge
  • Soft deletes by default, so a sync never removes records it cannot account for
  • Retries, a holding queue for failed records, alerts, and a daily reconciliation of counts on both sides

Legacy Modernization

Move off an old system without stopping the business. We start with the case for change: what the system costs to keep, what depends on it, and what would break. Modernizing for its own sake is not a good use of your budget.

  • Four routes weighed: rehost, replatform, refactor or rebuild
  • Replacement in stages: a modern API in front of the old system, new features on the new side, old features moved in phases
  • Data profiled, mapped and checked for parity, with a rollback plan written before cutover
  • Cutover in a planned window, with the old system kept read-only while results are validated

How a Project Runs

Every project starts with a free discovery call, then a detailed proposal with scope, timeline and pricing. The exact deliverables are agreed before work begins and documented at handoff.

  1. 01

    Discovery and Scope

    Users, records, systems and the job each one does, written into a scope with acceptance criteria you approve.

  2. 02

    Architecture and Data Map

    The data model, the API contract and, for integrations, a field-by-field map with failure and retry rules.

  3. 03

    Build in Milestones

    Working software you can review at each milestone, tested against the agreed criteria before the next one starts.

  4. 04

    Launch and Handoff

    Training and documentation for your team, plus the code and deployment access, with any support period agreed in the scope.

Why Go Custom?

  • Full source code ownership
  • No ongoing license fees on custom code
  • One record shared across your tools
  • Support after launch, scoped if you want it

Technologies We Use

React & Next.js
TypeScript
Node.js
Python
PostgreSQL
REST & GraphQL APIs

Have a Project in Mind?

Custom application projects are $20,000 to $75,000, and enterprise systems are $75,000 to $250,000. Integrations and modernization are scoped from your system inventory before we quote. Book a Free Consultation and we will map the first release with you.

Example deliverable

What the First Deliverable Looks Like

A scoped application design that makes roles, records, and the first usable release explicit.

  • User and permission matrix
  • Core record and workflow map
  • Staged release acceptance checks

Related work (Shipped system): Candid Studios portal

Working Applications

Explore Working Examples

Explore real application interfaces with fictional records. See how the work connects, then talk with us about a system for your business.

CRM And Mobile Apps · Built For A Business We Operate

Candid Business Operations

Keep inquiries, project details, documents and crew assignments connected, with dedicated views for your office, team and clients.

Sample workspace. Screenshots and demo figures use fictional records.

FAQ

Custom Apps & Integrations, Frequently Asked Questions