Authneeds SDK
Tokens, decoded.
Every JWT your app sends, with its claims and a live expiry countdown. Secrets stay redacted when you copy.
Features
Everything you reach for,
Everything you reach for,
right beside the simulator.
No proxy setup, no simctl one-liners, no trip to the Settings app.
Network Monitorneeds SDK
See every request.
Live timing, status and size for each call. Errors stand out, slow ones too.
- Query filter like
status:>=400 host:api slow:>300ms - Copy as cURL, fetch, HTTPie or Swift
- Generate a Codable model from any response
- HAR export and pretty-printed JSON
Mocksneeds SDK
Mock any endpoint.
Swap a response without touching the backend. Group mocks into scenarios and flip them on together.
- Status codes, bodies and delays
- Scenario folders like “Spring sale” or “Errors”
- Hit counts so you know a mock fired
Throttlingneeds SDK
Your app on bad Wi-Fi.
3G, high latency and packet loss for one app, not your whole Mac. Presets from WiFi down to Offline.
Push Notifications
Push in one click.
Real banners on the simulator from a quick form or custom JSON. Silent pushes and saved templates included.
Location
Go anywhere, ride a route.
Coordinates, Maps links and GPX routes at walking, biking or driving speed.
Accessibility
Accessibility settings, live.
Dynamic Type, dark mode, contrast, bold text and reduce motion without a trip to Settings.
Debug
Debug without digging.
Relaunch with arguments, grant or revoke permissions, switch locale, send a shake or a memory warning.
Free, no account. Get it in a minute.
And more
The small things, handled.
Capture
Screenshots, video and GIFs with device frames, ready for the App Store.
Design overlays
Grid, rulers, magnifier and a design comparison overlay with opacity.
Face ID & Touch ID
Matching and failing biometrics, and enrollment, in one click.
Status bar & bezels
A clean 9:41 status bar and real device bezels for marketing shots.
Deep links
URL schemes and universal links, saved so you never retype them.
Shake & memory
Send a shake or a memory warning to the foreground app.
WebSockets
Inspect socket frames as they flow, next to your HTTP traffic.
Performance
FPS, memory and CPU while you click around.
SimKit SDK
One line for the deep stuff.
Add the SDK to unlock network monitoring, mocks, throttling, WebSocket and performance insights. Enable it inside #if DEBUG and nothing runs in your release builds.
// Swift Package Manager: // github.com/ealtaca/SimKitSDK-Binary import SimKit #if DEBUG SimKitSDK.shared.enable() #endif // That's it. Requests now show up // in SimKit on your Mac.
FAQ
Questions, answered.
Is SimKit really free?
Yes. SimKit is free with no account. Get it from the Mac App Store, or download the signed and notarized DMG from this site.
Do I need the SDK?
No. Capture, push, deep links, location, accessibility, biometrics and debug tools work with any app. The SimKit SDK adds network monitoring, mocks and throttling. It is one line of Swift, and you enable it inside #if DEBUG.
Does my data leave my Mac?
Captured requests, headers, bodies and tokens stay on your Mac. SimKit sends anonymous usage analytics and crash reports through Firebase. See the Privacy Policy for details.
Is SimKit open source?
Not yet, but it will be soon. The app's source code will be published on GitHub.
Does SimKit work with Xcode 27?
Yes. SimKit 1.7 supports the new Device Hub in Xcode 27 as well as Simulator.app in earlier versions.
What macOS version does SimKit require?
macOS 14 (Sonoma) or later.
App Store or DMG?
They are the same app. The App Store version updates through the App Store, the DMG version updates itself.
Stop fighting
the Simulator.
Free on the Mac App Store, or as a DMG straight from here.