Couverture 4+

Easing & Spring Curve Editor


    • 4.9 • 12 Ratings
    • $8.99



Couverture is a spring and easing curve editor that enables you to supercharge animations in apps, websites and prototypes.

Spring, Easing or Timing Curves are made to specify the rate of change in an animation over time. Couverture lets you manage, edit and preview those curves in realtime. It is a powerful way to create sophisticated animations for your creative projects.

• Top-notch spring and easing curve editor
• Store, manage and export curves
• Preview animations in realtime
• Ready-to-go: Ships with 24 easing curves and 13 spring curves
• Curve Export as: SwiftUI, CoreAnimation, UIKit, CSS, Image (PNG), float literals. Floats are compatible with most design tools that support timing curves (like Figma, After Effects, Motion)
• macOS Shortcuts support
• Optimized for macOS 12+
• Optimized for Mac with M1 (Apple Silicon)

Here’s Why You Need It:
Great animations are the couverture in the design of top-notch user interfaces, websites and apps. Couverture ships with a great collection of well-defined spring and easing curves. Store and manage your custom designed curves right within the app. Export them as code snippet for a variety of programming frameworks. Generate curve-based CSS Keyframe Animations or save curves as Image files. Magic begins with the insanely playful animation preview. It pushes you to create never-seen-before, more interesting animation curves. They will set your creative work apart.

I, the developer, believe in privacy as a human right. Couverture does not collect analytics data. All of your data remains offline, on your device, where it belongs.

An app ahead:
If you like the app, please take a moment to rate it on the Mac App Store. That’s a great way to support indie developers like me. If you need help or want to make a feature suggestion, reach out any time: I’d love hearing from you!

What’s New

Version 1.1.4

Version 1.1 — It’s spring time!

• Impressive new Spring Curve Editor
• Create, manage, export and preview Spring Curves
• Use sophisticated CSS spring animations on the web with the exciting new CSS Keyframe Generator
• Share Easing and Spring Curves as image to ease communication between designers and developers
• Previews are now resizable and even more enjoyable
• Making your data accessible: Entire curve collections now can be imported and exported as JSON files
• Greatly improved performance

I regularly update Couverture to make it even better. If you like the app, please take a moment to rate it on the Mac App Store and leave a review. Have anything else you’d like to suggest? I’d love to hear from you →

Ratings and Reviews

4.9 out of 5
12 Ratings

12 Ratings

BlahBlahMeatball ,

Super Useful. One feature request.

I've used a bunch of animation curve editors over the years. Especially since adding springs, Couverture is among the best.

One common gripe with springs is obviously that you never quite know their duration without a bit of work (depending on which framework you're in). So my feature request / wish would be that I could see the duration of the spring animation in Couverture. As a , this would be broken up into 1) when the final value is initially hit/passed (because the spring is going past it) 2) when the spring visually is close/at rest (this could simply be in terms of values being below a 0.5 away from the final target; or maybe it could allow for a custom threshold) 3) when the actual spring animation is fully done. Depending on the spring, these can be pretty similar values or they can be surprisingly different. Either way, it's often hard to reason about these values without some extra work, and it seems like something up Couverture's alley to help with this.

Thanks for this great tool. Looking forward to what's next.

Developer Response ,

Hi there — thanks for your feedback, really appreciate it! Couverture already shows an estimate of the spring curves duration (below the curve itself in the editor). I’m afraid that I do not understand all of your ideas, so would you mind to reach out directly to me ( Would love to hear from you to see how I can improve the app further! Have a great day, Martin

nickname17246738 ,

Leveled Up Animations

Super cool app! Seriously leveled up my animation skills especially for SwiftUI.

App Privacy

The developer, IXEAU, 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 Collected

The developer does not collect any data from this app.

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


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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