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Best Cults3D Alternative in 2026 — Keep 100% of Every Sale

Cults3D is one of the largest 3D model marketplaces for 3D printing — but it takes 20% of every paid sale. This guide compares Cults3D with Proofly across commission, 3D viewer quality, piracy protection, analytics, and payout speed, so you can decide where your models earn the most.

  • Cults3D commission: 20% of every paid sale — no reduced rate regardless of volume
  • Proofly commission: 0% — you keep 100% of the listed price; buyers pay a flat ~$1 fee separately
  • Proofly viewer: built-in WebGL 3D preview for every listing — no Sketchfab required

Cults3D commission: 20% on every sale, no exceptions

Cults3D charges a flat 20% platform fee on every paid download. If you sell a $10 model, you receive $8. On a $5 model, you receive $4. There is no volume discount, no seller tier that reduces the fee as your sales grow, and no monthly cap. The 20% applies to every transaction indefinitely.

For a creator selling $12 models with 50 sales per month, that's $120/month going to Cults3D — revenue you earned but don't receive. At 100 sales/month, it's $240/month. At the scale of a successful creator doing 500 sales/month across their catalog, Cults3D's cut exceeds $1,200/month.

PlatformCreator earnsPlatform keepsNotes
Cults3D80%20%Flat 20% on all paid sales
MyMiniFactory85–90%10–15%Plus buyer-side processing fee
CGTrader60–85%15–40%New sellers start at 60%; tier-based
TurboSquid40–80%20–60%Exclusivity requirement for higher tiers
Proofly100%0%Buyer pays flat ~$1 fee separately; creator keeps full price
Math check: On 100 sales of a $12 model — Cults3D pays out $960. Proofly pays out $1,200. That's $240 more from the same model with the same buyers. The math compounds: at 500 sales/month, the difference is $1,200/month in creator earnings.

3D viewer: Cults3D vs Proofly

Cults3D does not have its own 3D viewer. Most listings show flat photos — the same PNG you'd upload to any file-sharing site. If a creator separately uploads their model to Sketchfab and embeds the Sketchfab player, buyers get an interactive preview. If not (and most don't bother), buyers purchase blind from a static render.

This matters for buyers because a render image cannot show:

  • Actual mesh topology — hidden holes, non-manifold geometry, zero-thickness walls
  • Real scale — models are often listed without dimensions; a render looks identical at 5mm or 500mm
  • Print quality indicators — watertight check, polygon density, overhangs

Proofly's viewer renders the actual mesh file in WebGL — no Sketchfab account required, no separate upload step. Every listing automatically shows an interactive 3D preview with orbit/zoom/pan controls, and buyers can switch between solid, wireframe, clay, and X-ray modes. The viewer also displays polygon count, bounding box dimensions (mm/cm/in switchable), and a watertight check badge.

Proofly viewer supports: STL (binary + ASCII), GLB/GLTF with PBR materials, OBJ + MTL companion textures, 3MF, FBX with animations — all in-browser, no plugin required. Cults3D: Sketchfab embed (creator must upload separately) or static image only.

Piracy protection: where Cults3D stops and HiddenMark starts

Cults3D delivers plain, unprotected files to every buyer. Once an STL is downloaded, the file is indistinguishable from any other copy. There is no watermarking, no per-buyer fingerprinting, and no mechanism to trace a leaked file back to its source. If your model ends up on a Telegram group or Discord server, you have no way to know which purchase caused the leak.

This is not unique to Cults3D — CGTrader, MyMiniFactory, TurboSquid, and Gumroad all deliver unprotected files. The problem is structural: a 3D mesh file contains no native way to embed invisible, persistent buyer identity.

Proofly solves this at the geometry level with HiddenMark™. When a buyer completes a purchase and downloads a model, the system embeds a unique per-buyer code into vertex position offsets in the mesh — below visual perception threshold, surviving re-export to other formats and re-slicing. The fingerprint is different for every transaction. If a file is leaked:

  1. 1Upload the leaked file to proofly.store/hiddenmark
  2. 2HiddenMark reads the embedded fingerprint from the mesh geometry
  3. 3You see the exact purchase record — which buyer, which model, which transaction date

The watermark is embedded automatically at download time — no creator action required. HiddenMark is unique to Proofly. No other major 3D model marketplace currently offers this.

Analytics and creator tools

Cults3D provides basic stats: total downloads (free + paid), number of likes, and a rough view of which models are performing. It does not show conversion rates, traffic sources, how buyers found your model, or buyer geography.

Proofly's analytics dashboard includes:

  • Conversion funnel — views → detail page opens → purchases, with drop-off % at each step
  • Traffic sources — organic search, direct, social, referral — per model
  • Buyer geography — country breakdown with flags, useful for knowing which markets respond to your style
  • A/B thumbnail testing — upload two cover images, the dashboard shows real CTR for each; winner stays
  • Revenue over time — daily/weekly/monthly earnings chart with trend line
  • Actionable signals — "this model has 400 views but 0 purchases — consider lowering price or improving cover" automatically surfaced in the dashboard
Why it matters: On Cults3D, if a model has 200 views and 2 sales, you don't know if the problem is a bad cover image, wrong pricing, poor description, or weak title. On Proofly, you can run an A/B test on the cover image, check the conversion funnel, and see exactly where buyers drop off — then fix it.

File format support

Cults3D primarily serves the 3D printing market and accepts STL, OBJ, 3MF, and some other formats. Game-ready formats like GLB, FBX, and USD are less common on the platform and get fewer buyers looking for them there.

Proofly accepts and previews a broader format set:

FormatCults3DProofly
STL✓ Upload + static image✓ Upload + WebGL preview
OBJ + MTL✓ Upload + static image✓ Upload + textured WebGL preview
3MF✓ Upload✓ Upload + WebGL preview
GLB / GLTF (PBR)Limited✓ Upload + full PBR material preview
FBX (with animations)Limited✓ Upload + animation playback in viewer
STEP / CAD filesDownload only✓ Upload + download
ZIP packagesDownload only✓ Auto-detected, per-file preview chips

Cults3D vs Proofly: full comparison

FeatureCults3DProofly
Commission20% of every sale0% — keep 100%
3D preview for buyersSketchfab embed (manual) or static imageBuilt-in WebGL viewer on every listing
Piracy protectionNone — plain unprotected filesHiddenMark™ per-buyer mesh watermark
Conversion analyticsViews + downloads onlyFunnel, sources, geography, signals, A/B
A/B thumbnail testingNoYes — live CTR comparison
Free model hostingYesYes
Exclusivity requiredNoNo
Boost / promoted listingsNo self-serve boostSelf-serve boost with ROI tracking
PayoutMonthly, threshold appliesStripe Connect, on-demand above threshold
Viewer animation playbackSketchfab only (manual)GLB/FBX animations built-in, speed control

Migrating from Cults3D: what to expect

Moving your catalog from Cults3D to Proofly (or listing on both) is straightforward because neither platform requires exclusivity:

  1. 1Download your original STL/GLB/OBJ files from whatever tool you used to create them (Blender, ZBrush, Fusion 360). You can also download files you uploaded to Cults3D from your own account.
  2. 2Create a Proofly account at proofly.store/register — takes 60 seconds.
  3. 3Upload your models via the upload page. Drag-drop STL, GLB, or a ZIP with multiple formats. AI auto-generates the description and tags — you review and adjust.
  4. 4Set your price in PLN, USD, or EUR. Proofly converts automatically for buyers in other currencies. Your Cults3D price is a good starting point.
  5. 5Connect Stripe in dashboard settings for payouts. Stripe Connect is required to receive payments; setup takes 5–10 minutes.

You don't have to remove your models from Cults3D. Many creators list on both simultaneously. The economics favor Proofly for paid models, while Cults3D's established free-model community can act as a discovery funnel — list a free preview version on Cults3D, link buyers to the full-detail paid version on Proofly.

Start keeping 100% of your sales

Proofly is the best Cults3D alternative for creators who want 0% commission, a real 3D viewer, and per-buyer piracy tracing. Upload your first model free in 2 minutes.

Frequently asked questions

What commission does Cults3D take?

Cults3D charges a 20% platform fee on every paid download. If you price a model at $10, you receive $8. There is no reduced rate for high-volume sellers — the 20% applies indefinitely. Proofly charges 0% commission; creators keep the full listed price and buyers pay a flat ~$1 service fee separately.

Does Cults3D have a 3D preview viewer?

Cults3D does not have its own 3D viewer. Listings show static images unless the creator has separately uploaded the model to Sketchfab and embedded the player. Proofly has a built-in WebGL viewer on every listing that renders the actual STL, GLB, OBJ, or 3MF file — no Sketchfab account or manual upload needed.

Does Cults3D protect STL files from piracy?

No. Cults3D delivers plain, unprotected files. If a buyer shares the downloaded STL, there is no way to identify who leaked it. Proofly's HiddenMark™ system embeds a unique per-buyer fingerprint in every download at the mesh geometry level. Upload a leaked file to proofly.store/hiddenmark to immediately see which purchase it came from.

Can I use Proofly and Cults3D at the same time?

Yes — neither platform requires exclusivity. Many creators list on both simultaneously. A common strategy: list free or preview models on Cults3D to reach its community, then sell the full-detail paid version on Proofly where you keep 100% of the revenue.

How long does Cults3D take to pay out?

Cults3D pays monthly and has a minimum payout threshold before sending funds. Proofly uses Stripe Connect for payouts — once your balance reaches the minimum threshold you can request a payout at any time, not just on a fixed monthly schedule.

What is the best Cults3D alternative for selling STL files in 2026?

Proofly is the strongest Cults3D alternative for creators who want to maximize earnings per sale. Key advantages over Cults3D: 0% commission vs 20%, a built-in WebGL 3D viewer vs Sketchfab-optional previews, HiddenMark™ per-buyer watermarking (unique to Proofly), and a full analytics suite including conversion funnel, buyer geography, and A/B thumbnail testing. No exclusivity required.