Will users notice the difference?

Done well, no. React Native and Flutter render close to native on modern devices, and we benchmark p95 frame-rate, time-to-interactive, and memory against your native baselines before each module ships. If a module can't hit native performance, we leave it native.

Can you migrate incrementally without a freeze?

Yes — the migration runs alongside ongoing feature work, behind feature flags. Each migrated module shipped is rollback-safe. We won't ask you to stop the product roadmap; that's how migration projects die mid-program.

What's the real cost vs. staying native?

Migration costs more in year one and saves money from year two. For a mid-sized app, total three-year cost typically lands 30–50% lower than keeping two native codebases — but we'll run the math with your team in discovery instead of giving you a glossy number.

Native to Cross-Platform Migration

Native to Cross-Platform Migration — Without the Rewrite Pain

Two native codebases is two of every bug. We migrate to React Native or Flutter incrementally — module by module, behind feature flags — so you cut maintenance cost without a heroic cutover.

Where the 30–50% savings come from

≈ 40% maintenance reduction

Typical 3-year saving moving from two native codebases to one cross-platform codebase.

One feature implementation, not two — 45%: Biggest lever — every product change is built once.
Shared QA & test automation — 25%: One test suite, one CI pipeline, half the regressions.
Single OS-upgrade cycle — 15%: iOS/Android version upgrades cost roughly half.
Smaller hiring surface — 15%: One team, two stores — easier to staff and onboard.

Numbers are typical, not guaranteed — exact savings depend on app surface and team shape.

What you get

Code & risk audit: which modules migrate cleanly, which fight the framework, which to leave native

Hybrid bridge so React Native or Flutter modules ship alongside existing native code

Migration sequence by ROI — start with the screens that change most, end with the ones that change least

Performance harness benchmarking against native baselines on real devices, not simulators

Test coverage for each migrated screen — visual regression, interaction, and performance

Team enablement: pair-programming and a runbook so your in-house engineers can extend after we leave

Maintenance-cost model showing the real savings month-over-month, not vendor-pitch promises

When it fits

You have two mature native codebases drifting apart in features or quality
Most of the app is product UI, not hardware-intense workloads — those stay native
You'd rather cut maintenance burn rate by 30–50% than ship the next feature twice
You can tolerate a 4–9 month incremental migration instead of a 6-week cutover

When it doesn't

The app is hardware-heavy (AR, BLE pipelines, video encoding) — staying native may be right
The native codebases are about to be retired anyway — migrate to whatever the replacement is, not via React Native
You want a Big Bang rewrite in three months — that's how migration projects fail

Process

Discovery (3–4 weeks) produces a module-by-module migration sequence and a working hybrid build with one screen migrated end-to-end. Then 4–9 months of incremental migration, each sprint replacing a discrete module behind a feature flag with a rollback path. Final sprint retires the dead native code.

Full delivery process

Pricing

Fixed-price by phase. Discovery is $20–40k. Migration phases run $40–120k each depending on the module surface. Total program for a mid-sized app typically lands $250–600k — versus $400–900k+ for keeping two native codebases over three years.

See engagement models

Case studies

Financial Technology

FinTech Mobile Banking Platform

Secure, AI-powered mobile banking serving 500K+ users with instant transfers and biometric authentication.

FAQ

Will users notice the difference?: Done well, no. React Native and Flutter render close to native on modern devices, and we benchmark p95 frame-rate, time-to-interactive, and memory against your native baselines before each module ships. If a module can't hit native performance, we leave it native.
Can you migrate incrementally without a freeze?: Yes — the migration runs alongside ongoing feature work, behind feature flags. Each migrated module shipped is rollback-safe. We won't ask you to stop the product roadmap; that's how migration projects die mid-program.
What's the real cost vs. staying native?: Migration costs more in year one and saves money from year two. For a mid-sized app, total three-year cost typically lands 30–50% lower than keeping two native codebases — but we'll run the math with your team in discovery instead of giving you a glossy number.
React Native or Flutter?: Depends on what your team can hire for, the maturity of the ecosystem libraries you need, and the design system. We're agnostic; we've shipped both. In discovery we'll recommend one and explain why.

Ready to talk native to cross-platform migration?

30-minute scoping call. No obligation, no hard sell.