Swift files
Generate Swift code from decrypted IPA files so you can read behavior at the source level.
iosy by OpenSyntaxx
Decompile IPA files into Swift projects on your machine.
iosy is a standalone CLI for decrypted iOS apps. Generate deterministic Swift output locally, then review the recovered project in your own editor. Your IPA stays on your workstation.
Standalone CLIOffline decompilationSwift project outputDeterministic output
Downloads are available for macOS, Windows, and Linux. Sign in from iosy to activate your plan.
Start with a decrypted IPA
Use an iOS app package you are authorized to inspect.
Run iosy locally
Decompilation happens inside the standalone CLI on your machine.
Open the Swift project
Review files, structure, and resources in your editor.
Output
Generate a project you can read, search, and compare.
iosy turns a decrypted IPA into a Swift project with files, folders, and resources you can inspect in your own editor.
Project structure
Recover a project layout with files, folders, resources, and related app artifacts in one place.
Searchable output
Open the recovered project in your editor and search classes, methods, SDK calls, and resources.
Deterministic runs
Run the same supported input with the same iosy build and get the same output files.
IPA to Swift
What iosy generates from a decrypted IPA.
iosy focuses on Swift decompilation for iOS apps. The output is made for manual inspection: open the Swift project, follow files and symbols, compare runs, and review behavior without sending the IPA to a hosted service.
- Swift files for recovered types, methods, and call sites
- A local project layout that keeps Swift code, resources, and app artifacts together
- Deterministic file selection in the trial and deterministic full output in paid plans
- Searchable Swift output that can be reviewed in your local editor
Sample workflow
Signal-iOS decompilation sample
A reproducible sample: public Signal-iOS source, a locally built IPA, and a ZIP archive with Swift code produced by iosy.
Example uses public Signal-iOS source. Signal is not affiliated with OpenSyntaxx.
On-premise by design
The decompilation happens where the IPA already is.
OpenSyntaxx handles licensing and billing. iosy handles decompilation locally, inside your own environment.
Decompilation runs offline
The IPA is processed on your machine. There is no hosted queue and no cloud decompilation step.
No IPA uploads
Your app binary stays on your workstation. The web account is used for license, billing, and activation.
Standalone CLI
Download the ZIP archive for macOS, Windows, or Linux, extract it, and run iosy in your local environment.
Workflow
Download the CLI. Sign in. Decompile locally.
The website is for accounts, subscription, and downloads. The product itself runs as a standalone tool on your machine.
Download iosy
Install the standalone CLI build for your operating system.
Sign in from the CLI
Use your OpenSyntaxx account to activate your current plan.
Run it on a decrypted IPA
Point iosy at an IPA file you are authorized to inspect. The decompilation runs locally.
Review the Swift project
Open the project files in your editor and inspect app behavior, dependencies, and project structure.
Use cases
Built for authorized iOS app analysis.
iosy is for companies and individual researchers who need readable Swift output from apps they are allowed to inspect.
Security review
Inspect iOS app behavior from Swift output instead of working only from symbols or assembly views.
SDK audits
Trace third-party SDK usage, integration points, and app-side calls inside the recovered project.
Legacy app analysis
Understand old iOS apps when original source is missing, incomplete, or unavailable to the review team.
Work and client projects
Use the Commercial plan when iosy is part of company work, client review, or professional research.
Pricing
Start with a local preview. Upgrade for full output.
The trial lets you inspect deterministic Swift output on your own machine. Paid plans unlock complete generation for manual use.
Self-serve plans cover manual use. Automation, CI, batch runs, redistribution, and using iosy to deliver services for customers need a separate agreement.Contact us.
Free Trial
Preview iosy output on your own machine.
$0
evaluation
- 10% of Swift file output
- Offline deterministic decompilation
- Evaluate output quality
Individual
For individual research and personal review.
$30 USD/mo
manual use
- 100% of Swift file output
- Offline deterministic decompilation
- Personal research and review
Commercial
For business projects, client reviews, and company use.
$300 USD/mo
manual use
- 100% of Swift file output
- Offline deterministic decompilation
- Business, client, and company projects
OpenSyntaxx
The company behind iosy.
OpenSyntaxx builds local source recovery tools. iosy is our IPA-to-Swift decompiler: the app runs on your machine, while the web account manages subscription, license, and billing.
Ready to inspect an IPA locally?
Download iosy, sign in from the CLI, and generate a deterministic Swift preview from an authorized IPA.