// We shipfitness apps

AptixLabs is the software studio behind UltraFit360. We build B2B SaaS, fitness and healthtech apps, coach platforms and AI integrations — connecting mobile, web and backend workflows.

UltraFit360 · live5K+ Android downloads2K+ iOS downloads4.8★ · 200+ ratings
ultrafit360.com/coach/login
UltraFit360 Coach dashboard showing the client roster, overdue check-ins, adherence and upcoming appointments, with fictional demo data
UltraFit360 Coach · product preview with demo data
Built by AptixLabs Live now

The whole coaching day.
One workspace.

Meet UltraFit360 Coach. A clear view of your clients, their programmes and the check-ins that need you next.

  • Client roster and progress in one place
  • Check-ins, schedules and follow-ups
  • Programmes and team workflows
Open UltraFit360 Coach Read about the product

Two tracks. One small studio.

Track B · Partner

We build with you.

Marketing, web, mobile and AI-agent work for a handful of partners. We take on a small slate so each project gets the attention an in-house team would give it.

Start a conversation

Where we play today, and where we're heading.

Three ways to work with us.

Pick the engagement that fits where you are. Not sure? Tell us, and we'll suggest one.

Project

Fixed scope, fixed timeline. We design + build + ship — usually 6 to 12 weeks. Best for an MVP or a clear, bounded feature.

  • Discovery, design, engineering, launch
  • 2-week sprint cadence
  • Single point of contact
Start a project

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We slot inside your team. Your sprints, your tools, our engineers — for big pushes or specialist gaps.

  • Slack + Linear, your way
  • 1–3 ppl per pod
  • Knowledge transfer baked in
Embed with us
— OUR PROCESS

We have the team
and the process.

The same pod takes you from kickoff to release. No project shoved over a wall halfway through, no surprise invoices, no vibes-only roadmaps.

Discovery call.

We map the real problem in workshops and interviews. Brief that's actually testable.

Design + build.

Prototype, ship in two-week slices. Production code from sprint one — real progress every fortnight.

Launch & grow.

Analytics, monitoring, iteration. We tune the product against real usage, not assumptions.

  1. 1
    Discovery call.

    We map the real problem in workshops and interviews. Brief that's actually testable.

  2. 2
    Design + build.

    Prototype, ship in two-week slices. Production code from sprint one — real progress every fortnight.

  3. 3
    Launch & grow.

    Analytics, monitoring, iteration. We tune the product against real usage, not assumptions.

— Frequently asked

Tech, products and how we build.

Answers about our stack, product architecture and engineering approach. Read the studio journal for implementation detail.

  1. 01What stack does AptixLabs use?

    This website uses React, TypeScript and Vite, with prerendered HTML on Firebase Hosting. UltraFit360’s documented mobile stack uses Expo and React Native, a FastAPI backend, PostgreSQL and Firebase Auth. We select components around the product’s data and workflow rather than assuming one stack fits every project.

  2. 02How is UltraFit360 structured?

    The documented architecture separates the mobile interface, API business logic and relational storage. A consolidated launch-data endpoint hydrates several client caches. Goals and daily targets are stored separately so the product can preserve historical changes.

  3. 03Can these patterns support a B2B SaaS product?

    Yes, when the workflow fits. Shared API rules, account-scoped records, explicit permissions and cache invalidation apply to many products. The implementation still needs to reflect your account model, reporting requirements and operating constraints.

  4. 04How do you build an AI assistant into a product?

    Start with a specific task and a restricted set of tools. UltraFit360’s AI Coach documentation separates context retrieval, history and actions. A production assistant also needs server-side authorisation, failure handling and evaluation against representative tasks.

  5. 05Does Firebase Auth mean the database must be Firestore?

    No. Authentication and application storage are separate decisions. UltraFit360’s documentation describes Firebase Auth alongside PostgreSQL. The backend maps the external identity to an internal profile before working with application records.

  6. 06How do you approach app loading performance?

    Measure the complete user journey, then address request waterfalls, oversized assets and unnecessary work. The documented UltraFit360 launch endpoint is an example of consolidating data retrieval. Any timing claim needs a stated device, connection and measurement method.

  7. 07How should product notifications work?

    The UltraFit360 notification guide describes scheduled processing, user timezones, preferences, cooldowns, a queue and delivery logs. The same concepts can support SaaS reminders. Permission to receive a push notification should not be treated as permission to send unlimited messages.

  8. 08How do you keep mobile and web views consistent?

    Define the server source of truth and identify which cached views each mutation affects. Hydrate initial caches, invalidate them after confirmed writes and specify failure behaviour. Realtime delivery is a separate choice based on the workflow’s tolerance for stale data.

  9. 09How do you handle security and compliance requirements?

    We begin by identifying the data, access boundaries and deployment requirements. Technical controls and legal or certification claims are different matters. A project’s regulatory obligations, agreements and certifications need independent verification; this FAQ does not claim a particular certification.

  10. 10Where can I read about implementation choices?

    The studio journal covers product architecture, mobile engineering, AI tools, caching and notification design. Articles distinguish documented UltraFit360 patterns from guidance for a new product. You can contact the team to discuss how those decisions apply to your requirements.

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Have an idea?
Let's build it.

Health, growth, software, agents — if it touches one of those, tell us about it. Honest thoughts, a clear next step, no slide deck required.