Flutter compiles Dart code, assets, and dart-define values into the APK, IPA, or web build, where tools can extract them. Obfuscation renames symbols but leaves string constants readable. Keep upstream secrets off the device, store session tokens in secure storage, and proxy private calls.
Compiled into the binary or web bundle.
Store with flutter_secure_storage backed by Keychain or Keystore.
Never in Dart source, env files, or assets.
It uses Keychain on iOS and Keystore-backed encryption on Android.
Large jsonDecode calls on the UI isolate cause jank on low-end devices.
Fewer requests over cellular networks cut latency and battery use.
The values are embedded in the compiled app and recoverable with string extraction.
shared_preferences is unencrypted on device storage.
Ship only an rc_live_ client token in the Flutter app and call RealComposer edge URLs with http or dio. Secrets stay in the vault and each response is pre-shaped for the widget tree.
No. It renames classes and methods, but string constants such as keys remain extractable.
A Stripe secret key passed with dart-define or kept in Dart source is compiled into the APK or IPA and can be extracted. Ship only a RealComposer client token in the Flutter app. The edge pipeline injects STRIPE_SECRET_KEY and returns plan and status fields for your billing screen.
OpenAI keys bundled in Flutter apps through env files, assets, or dart-define are extractable from release builds. Route chat requests through a RealComposer pipeline that injects OPENAI_API_KEY at the edge, applies per-client rate limits, and returns only the reply text to the app.
Airtable returns each row wrapped in records, fields, and metadata, and Flutter decodes all of it on the UI isolate. A RealComposer pipeline injects the Airtable token, asks Airtable for only the columns your ListView renders, and returns just the records array for your Dart model classes.
Mobile network latency is the delay data experiences traveling between a mobile device and a server over cellular or wireless networks. Radio wake-up time, high round trip times, packet loss, and network switching make mobile requests significantly slower and less predictable than wired connections.
Credential LeakageCredential leakage is the unintended exposure of secrets such as API keys, tokens, and passwords. Common sources include JavaScript bundles, decompiled mobile apps, public Git repositories, browser network logs, and low-code platform configurations visible to users.
Client Token (Scoped Bearer Auth)A Client Token is a scoped, revocable authentication credential designed for frontend web and mobile applications. It grants permission to invoke specific edge API pipelines while enforcing allowed-origin domains and rate limits, safely abstracting sensitive upstream API secrets.