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Gravity Sketch vs Mmhmm

Gravity Sketch logo

Gravity Sketch

Software

VR 3D design tool

From
Free
Rated
-
Full reviewWebsite
Mmhmm logo

Mmhmm

Software

Presentation platform for video calls

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Gravity Sketch has a free tier, so it costs nothing to try first.
  • Each has a real cost: Gravity Sketch free plan limited to 150MB cloud storage and 3 simultaneous users per room; Mmhmm renamed to Airtime and split into four separate tools, Camera, Recorder, Creator and Stacks, rather than the single app the mmhmm name refers to
  • They diverge on capability: Gravity Sketch covers VR design, Mmhmm covers Custom layouts.

Where they differ

Only the attributes on which Gravity Sketch and Mmhmm actually diverge.

Attributes where Gravity Sketch and Mmhmm differ
AttributeGravity SketchMmhmm
Starting priceFreeOn request
Pricing modelfreemiumsubscription
Free tierYesNo
PlatformsVR (Meta Quest, Steam, Web)Desktop Mac, Desktop Windows
Founded20142020

Identical on both: user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Gravity Sketch

  • VR design
  • Desktop app
  • Surface modeling
  • Collaboration
  • Import/export
  • Presentation mode
  • Rhino
  • Alias

Only in Mmhmm

  • Custom layouts
  • Screen sharing
  • Virtual backgrounds
  • Picture-in-picture
  • Recording
  • Zoom
  • Google Meet
  • Microsoft Teams

What people use each for

The jobs each tool is most often brought in to do.

Gravity Sketch

  • Spatial 3D design and conceptualisation in VRnot Mmhmm
  • Collaborative product design sessionsnot Mmhmm
  • Conceptual model generationnot Mmhmm
  • Engineering and design team collaboration in immersive environmentnot Mmhmm

Mmhmm

  • Putting a presenter on screen over slides during a video callnot Gravity Sketch
  • Recording a screen walkthrough up to an hournot Gravity Sketch
  • Adding effects and reactions to a webcam feednot Gravity Sketch
  • Collecting materials for a meeting in a shared stacknot Gravity Sketch

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Gravity Sketch

  • Free plan limited to 150MB cloud storage and 3 simultaneous users per room
  • File format support limited to OBJ and STL on free plan; other formats require paid plan
  • Evaluation tools (surface contours, viewpoints, section tool) not available on free tier
  • VR access requires Meta Quest, Steam, or web app; limited to specific platforms
  • Data localisation only available on Enterprise plan

Mmhmm

  • Renamed to Airtime and split into four separate tools, Camera, Recorder, Creator and Stacks, rather than the single app the mmhmm name refers to
  • Screen recordings are capped at one hour
  • Windows support requires Windows 10 or 11
  • Pricing is not shown on the product pages

Pricing, plan by plan

Gravity Sketch

Free

No published plan breakdown. See the Gravity Sketch review.

Mmhmm

On request
  • Standard$9.99/month
    • Unlimited presentations
    • Custom layouts
    • Recording

Which should you pick?

Choose Gravity Sketch if

  • You need vr design.
  • You want to start without paying.
  • You work on VR (Meta Quest, Steam, Web).
  • You also want desktop app.
Gravity Sketch review

Choose Mmhmm if

  • You need custom layouts.
  • You work on Desktop Mac, Desktop Windows.
  • You also want screen sharing.
Mmhmm review

Questions people ask

Is Gravity Sketch or Mmhmm better?
Neither clearly leads. Gravity Sketch starts at Free and Mmhmm at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Gravity Sketch or Mmhmm?
Gravity Sketch has a free tier; the other does not. Paid plans start at Free for Gravity Sketch and On request for Mmhmm.
Does Gravity Sketch or Mmhmm run on more platforms?
Gravity Sketch runs on VR (Meta Quest, Steam, Web). Mmhmm runs on Desktop Mac, Desktop Windows.
Can I use Gravity Sketch for free?
Yes. Gravity Sketch has a free tier, so you can try it without paying. Mmhmm starts at On request.
What is Gravity Sketch best used for?
Gravity Sketch is most often used for spatial 3d design and conceptualisation in vr, collaborative product design sessions, conceptual model generation, engineering and design team collaboration in immersive environment. Of those, spatial 3d design and conceptualisation in vr and collaborative product design sessions are not what Mmhmm is typically brought in for.
What can Gravity Sketch do that Mmhmm cannot?
Gravity Sketch covers VR design, Desktop app, Surface modeling, Collaboration. Mmhmm covers Custom layouts, Screen sharing, Virtual backgrounds, Picture-in-picture.
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