RocketSim for Xcode Simulator 4+

Build apps faster


    • 4.7 • 27 Ratings
    • Free
    • Offers In-App Purchases



Test Push Notifications and deeplinks, quickly delete derived data, and use Grids & Rulers to implement designs pixel-perfectly.

Upgrade your Xcode Simulator with recordings containing touches, add bezels around screenshots & videos, and compare designs on top of the Simulator.

Grids & Rulers help you to create pixel-perfect design implementations
* Use horizontal and vertical rulers
* Measure the distance between elements in on-device pixels
* Configure grid size and color

Quick actions for your recent builds help you increase productivity
* Delete Derived Data with ease, globally or per app, to prevent rebuilding all your Xcode projects.
* Open common directories like your app's documents folder
* Read and write user defaults
* Grant, revoke, or reset permissions like photo and location access, allowing you to test related implementations quickly

Deeplinks (Universal Links) and Push Notifications
* Add quick actions to test Deeplinks and Push Notifications
* Bundle Identifier based: actions automatically show up for recent builds
* Launch deeplinks to test routing in your apps
* Easily launch deeplinks from your clipboard
* Manage and share Quick Action groups with your colleagues

Compare Designs for pixel-perfect design implementations
* Create pixel-perfect implementations of your app’s design
* Drag, Paste, or Select images for comparison
* Use the overlay mode to compare your app’s implementation to its design
* The slider allows you to slide between your app’s implementation and its design
* Any image source, whether it’s Sketch, Figma, or Zeplin.

Magnify for precision
* Zoom in at pixel level to verify your design implementation

Create screenshots
* Device Bezels create that professional screen capture you need
* Adjust the background color to match your styling

Create professional recordings to share progress
* A popup next to the active Simulator allows you to start a recording easily
* Enable touches to explain better how your app responds to user interaction
* Device Bezels create that professional impression you need
* Export-ready for App Store Connect. Creating App Previews has never been easier
* Landscape orientation is correctly applied in the exported video
* A floating thumbnail with the resulting recording allows one to drag into any destination easily
* Select MP4 or GIF to match your needs
* Trim videos for perfect lengths
* Control the quality of exports for perfect performance

Completely customizable to fit your needs
* All actions are available through the status bar menu as well. Configure to hide the floating windows if you feel like they're in your way
* Configure shortcuts to perform actions even quicker

Each feature is developed with a focus on productivity to keep you in your flow. Configure the available shortcuts to improve this even more.

Xcode® is a trademark of Apple Inc., registered in the U.S. and other countries.
Terms of use:

What’s New

Version 9.4.1

* NEW: Magnify for precise design validation
* NEW: Access settings from the side window context menu
* FIXED: Added support for the latest Simulators

Earlier in 9.3.0:
* NEW: Advanced comparing options. Adjust zoom, horizontal, and vertical offsets.
* FIXED: Renamed Preferences to Settings

Earlier in 9.2.0:
* NEW: Added a directory for File Provider Storage (#249)
* NEW: Derived Data deletion is more performant by using trash (#245)
* NEW: Added a Terminate perform action
* NEW: Added a Relaunch perform action (#238)
* FIXED: Side window correctly shows on secondary screens (#256)
* FIXED: Editing App Actions Group title performs more consistently (#251)

Ratings and Reviews

4.7 out of 5
27 Ratings

27 Ratings

Gid.m ,


Really good job!

It makes it so easy to create videos for app previews or just to share with friends or co-workers!

Keep up the great work!

Houwert ,

My team can't go without RocketSim

We use this tool daily, for our workflow and application the quick screenrecording tool while showing touches and triggering deeplinks from the menu bar are vital.
Highly recommend this tool for any dev out there trying to streamline their workflow.

Developer Response ,

Thanks a lot for your review; I'm super happy you're enjoying RocketSim! Reviews like these keep me motivated to make it even better.

NLkaiser ,

Early supporter

I was one of the first to buy (lifetime) rocket sim pro, but since v5 I can't restore my purchase. This not the way to appreciate early supporters!

Developer Response ,

We’ve given early supporters two major versions for free. To keep development possible, we’ve had to make this decision.

Feel free to reach out to us on Twitter if you’re unable to purchase pro, so we can give you a coupon.

App Privacy

The developer, SwiftLee, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Usage Data
  • Diagnostics

Privacy practices may vary based on, for example, the features you use or your age. Learn More

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