Stack
Spline
Browser-based 3D design tool for building interactive scenes you can embed on a site.
What it actually does
Spline is a 3D editor that runs in the browser. You model, light, and animate a scene, then embed it on a website as an interactive element, without learning Blender or writing Three.js.
It targets landing-page hero visuals and product mockups more than film-grade modeling. Scenes react to cursor and scroll.
The free tier watermarks public exports, so shipping a clean scene means paying from day one.
Spline vs its main rivals
The tools people actually weigh against Spline: Vectary, Womp, Blender. Same criteria for every column, including where Spline loses.
| Spline |  Vectary | WWomp |  Blender | |
|---|---|---|---|---|
| Free tier | YesWatermarked | YesYes | YesYes | YesFully free |
| Starting price | $12/mo annual, $15 monthly | $12/mo | $12/mo | Free |
| Runs in browser | Yes | Yes | Yes | NoDesktop |
| Interactive web embed | Yes | Yes | No | No |
| Code / glTF export | YesPro | Yes | YesglTF | YesglTF |
| No watermark on free tier | No | Yes | Yes | Yes |
- Cheapest route to an interactive 3D element without learning Blender
- Free tier lets you prototype the whole scene before paying
- Starter removes the watermark and unlocks unlimited files
- Watermark removal alone costs $12 to $15 per month
- Code, video, and app exports sit behind the higher Professional tier
- 3D scenes are heavy and can hurt landing-page load time
Pay less for it
4 ways foundStarter is $12/mo annual versus $15 monthly, and Professional $20 versus $25, so monthly costs about 25% more.
Build and test the full scene on the free tier; only pay once you need a watermark-free public export.
The AI feature is a separate $5/seat/mo charge. Leave it off unless you use it.
Vectary — If you want a watermark-free 3D web embed on a free plan, Vectary allows it where Spline does not.
StackTracker tracks what you actually pay for Spline and every other tool, flags overpayment, and shows the dollars you would save by switching.
Is it the right tool for you
- Your product or brand genuinely benefits from interactive 3D
- You want a 3D hero without a Three.js build
- You will ship the scene publicly and can budget the paid tier
- 3D is a nice-to-have, not core to the product → use a flat illustration or image
- Page load speed is critical to conversion → use a lightweight static hero
Track what Spline and the rest of your stack cost
StackTracker adds up every subscription, plus your hours, so you see the real number.
Prices and limits last verified 2026-07-20.