Mobile app development services for product and SaaS teams

Outsource mobile app development from Córdoba, Argentina. Native and cross-platform squads with device labs, store pipelines, and crash budgets for iOS and Android.

We use the Store Cadence Test in discovery to decide whether your next increment needs a fixed-scope project, a dedicated squad, or embedded specialists inside your rituals. Typical stacks include Kotlin, Swift, React Native, HealthKit, Wear OS, Fastlane, and Firebase Crashlytics. For Xamarin and .NET MAUI estates, see Xamarin development outsourcing. For Ionic and Capacitor hybrid apps, see Ionic development outsourcing.

Reviewed by Javier Uanini, Founder and CEO, Siblings Software. Last reviewed 2026-06-16.

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What this service covers

We ship mobile product work where store calendars, device labs, and native APIs are on the critical path from sprint one.

Native iOS and Android delivery

Swift and Kotlin product surfaces with Compose and SwiftUI where native depth earns the maintenance cost.

Cross-platform acceleration

React Native or Flutter for shared consumer flows with explicit native module boundaries.

Wearables and companion apps

Apple Watch and Wear OS surfaces scoped as separate slices with shared auth and push contracts.

Release train and store ops

Weekly internal tracks, crash budgets, staged rollouts, and YAML-sourced privacy artefacts in CI.

Who this is for

Consumer mobile-first founders

Both stores must ship on a fundraise calendar and your web team cannot carry mobile alone.

Franchise and multi-tenant apps

White-label flavors, MDM builds, and per-tenant signing need a pod that has done it before.

Hardware-adjacent products

BLE, HealthKit, or background location dominate the roadmap and JS polyfills will not survive review.

Teams recovering from store rejection

You need engineers who treat compliance as a release train, not a one-off spike.

How delivery works

  1. Discovery (3 to 5 days). Scope, risks, access, and the Store Cadence Test verdict on engagement shape.
  2. Team assembly (5 to 10 days). You interview engineers before sprint one. Replacements handled if fit is wrong.
  3. Sprint zero. CI, environments, observability, and definition of done aligned with your team.
  4. Two-week sprints. Demos, retros with named action owners, and shippable increments.
  5. Handoff. Runbooks, ADRs, and paired sessions. Optional retainer for audits or seasonal scale.

Team composition

Lean mobile squad (4 seats)

Mobile tech lead, two senior engineers, QA with OEM device lab.

Standard squad (6 seats)

Adds native specialist for bridges and part-time mobile DevOps on Fastlane.

Franchise program (8 to 10 seats)

Multi-flavor builds, release manager, and designer for store creative refresh.

Pricing and engagement models

Fixed-scope mobile launches typically land USD 15K to 120K for twelve to eighteen weeks. Dedicated mobile squads run USD 12K to 60K per month. Staff augmentation for senior iOS or Android engineers runs USD 4K to 9K per month per person.

Compare mobile app development staff augmentation, dedicated mobile app development team, app development sibling services, and React Native development outsourcing.

Comparison with freelancers, in-house hiring, and staff augmentation

Freelancers fit one feature spike. Dual native agencies fit when politics require separate vendors. Mobile outsourcing from Argentina wins when one cadence, one crash budget, and one device lab must serve both stores with daily overlap on US Eastern time.

Example project: Tidepool Fitness

Composite illustrative scenario based on common mobile app development outsourcing patterns.

Tidepool Fitness rebuilt BLE wearable pairing natively, passed Play Integrity on the membership flow, and shipped Wear OS class reminders while franchisees kept using the prior build through staged rollouts.

  • Crash-free sessions: 98.2% to 99.7%
  • BLE pairing failure rate: 1.8% to 0.09%
  • Play Integrity false lockouts: 2.4% to 0.03% of sessions
  • Franchise rollout: 42 locations in nine weeks with zero submission blackout

Explore published work in our case studies. Authoritative reference: Android compatibility documentation.

Risks and how we reduce them

OEM-specific battery kills

MIUI and Samsung battery flows get explicit in-app guidance before background services ship.

Wearable scope creep

Watch surfaces stay a separate backlog unless product signs a fixed companion scope.

Multi-flavor signing fragility

Every tenant flavor gets documented keystore custody and rollback builds.

Analytics-driven perf gaps

Lowest-end handset from analytics gates every release candidate.

Frequently Asked Questions

When BLE, background execution, or store policy depth dominate the roadmap and one shared JS layer will fight the OS every quarter.

Yes. OEM matrix covers Samsung A series, Xiaomi, Motorola, and your analytics tail before submission.

We start with rejection runbooks, privacy YAML, and parity tests before feature work resumes.

Shared core, flavor-specific signing, and tenant config in source with CI gates per flavor.

Fixed-scope milestones after discovery or a lean dedicated squad if franchise dates move weekly.

Staff augmentation in five to ten business days. Squads in one to two weeks after discovery.

Contact Siblings Software Argentina

Tell us the problem, the deadline, and the constraints. We respond within one business day with a written next step, not a generic proposal.