SpinFire XR vs Digit 3D CAD
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
SpinFire XR
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Bring your CAD designs to life in AR, improve decision making and get to market faster. TheoremAR enables you to visualize and interact with your 3D engineering design data in the real-world through your iPhone or iPad, whether that be from your office, a showroom, or your living room. MODES β’ Image tracking β Track 3D digital content against a chosen image target to place the content in a desired location. β’ AR Viewer β Use your environment and place 3D digital content on recognised surfaces to help visualize 3d models. β’ Model Tracking (target model) β Overlays the 3D digital content over an already created prototype. β’ Model Tracking (alternate model) β Overlays other selected content over the target model to view models within context. FEATURES β’ Manipulate your 3D model in the real-world by using the Manipulation box to move, rotate and revolve your model. β’ Scale your model to get a closer look at your design. β’ Hide and occlude parts and components to only see what is necessary. β’ Use measurement tools including point-to-point, offset and vertex snapping. β’ Display and review metadata for each component. β’ Capture screenshots of the current view of your model, mark-up your images and save to your device or server. β’ Enable world occlusion to see if models fit within their current space.
Digit 3D CAD
Create 3D models and designs on your mobile device. Offers free sketching and modeling tools, with an optional subscription for advanced features like export, rendering, and analysis.
- 3D sketching and modeling
- Parametric history
- STEP/STL/3MF export (Pro)
- Section views (Pro)
- Measurement and analysis (Pro)
- Rendering (Pro)
- Drawing export (Pro)
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FREE AND PRO Sketching, modeling, and parametric history are free to use. Digit 3D Pro is an auto-renewable subscription that unlocks STEP/STL/3MF export, section views, measurement and analysis, rendering, and drawing export. β’ Digit 3D Pro (Monthly) β [PRICE] per month β’ Digit 3D Pro (Yearly) β [PRICE] per year Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless it is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. You can manage your subscription and turn off auto-renewal in your Apple Account settings after purchase. Terms of Use: https://digit3d.top/terms.html Privacy Policy: https://digit3d.top/privacy.html
Screenshots
Verdict
The clearest difference is update cadence: Digit 3D CAD at daily against SpinFire XR's every 5 months. SpinFire XR's advantage is iOS requirement (13.0 vs 16.4). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SpinFire XR ships an update every 5 months, Digit 3D CAD daily. The most recent releases landed on October 15, 2026 and October 5, 2026 respectively.
| Parameter | SpinFire XR | Digit 3D CAD |
|---|---|---|
| Price | Free | Free |
| Positive reviews | β | 100.0% of reviews |
| Update frequency | Every 5 months | Daily β better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | β | Freemium |
| Devices | iPhone, iPad, iPod β better | iPhone, iPad |
| Requires iOS | 13.0 β better | 16.4 |
| Further details β not scored | ||
| Size | 227 MB | 76 MB |
| Age rating | 4+ | 4+ |
| Developer | Theorem Solutions Limited | θΏδΏ η½ |
In-app purchases
SpinFire XR
No in-app purchases
Digit 3D CAD
No in-app purchases
Questions
Is SpinFire XR free?
Is Digit 3D CAD free?
Do SpinFire XR or Digit 3D CAD have ads?
Which is updated more often, SpinFire XR or Digit 3D CAD?
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