Comparison

Grid vs Viewport 3D

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Grid

Features
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Grid View is a simple yet powerful grid planner that helps you organize and preview your images in customizable layouts. Upload your photos and arrange them using preset grid sizes like 3Γ—4, 9Γ—16, or 1Γ—1, or define your own custom dimensions. Easily drag and drop images to rearrange them until your layout looks just right. Create and save multiple templates, each with different grid settings, so you can quickly switch between layouts for different projects. Whether you’re planning a photo wall, an Instagram feed, or a visual story, Grid View gives you full control over how your images are presented.

About

Viewport 3D

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Viewport is a fast, focused 3D viewer built for artists. Open models straight from the Files app on iPhone or iPad β€” iCloud Drive, Google Drive, Dropbox, OneDrive, Downloads or AirDrop β€” and inspect them in a clean, professional viewport. No account. No cloud. No clutter. OPEN ALMOST ANYTHING β€’ USD family + Reality load natively: USDZ, USD, USDA, USDC, .reality β€’ OBJ, STL and PLY β€’ FBX, glTF, GLB, DAE and 20+ more formats via an in-app importer β€’ Pick a model and its texture files together to keep materials INSPECT LIKE A PRO β€’ Smooth orbit, pan, pinch-zoom and double-tap to frame β€’ Studio lighting presets + intensity, multiple backgrounds (studio, blueprint, gradient, checker…) β€’ Render channels: shaded, albedo, normals, roughness and UVs β€’ Turntable auto-spin and a reference ground grid β€’ Scene info: bounding box, dimensions, vertex/triangle/material/texture counts β€” real values, never faked ANIMATION β€’ Plays node/transform animation and skeletal (bone) skinning on supported models β€’ Simple play / pause / loop transport AR β€’ Place supported static models on real surfaces β€’ Real World and Studio lighting modes β€’ Stable placement, flexible scaling and grounding shadows MORE β€’ Capture a screenshot and share it β€’ Recent files with search, sorting, date grouping and thumbnails β€’ Adaptive layouts and multitasking support on iPad PRIVACY FIRST All 3D processing happens on your device. Viewport has no accounts, no tracking, no ads, and never uploads your files. Made by Reimagine Fx. More formats and tools coming.

Screenshots

Grid4 screens
Viewport 3D4 screens

Verdict

The call

Grid and Viewport 3D are too close to call on the numbers: across 6 compared parameters β€” price, update cadence, ads and in-app purchases among them β€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Grid ships an update fortnightly, Viewport 3D every 2 weeks. The most recent releases landed on September 26, 2026 and September 21, 2026 respectively.

ScorecardNo meaningful differences
Grid versus Viewport 3D: the parameters behind the verdict, then further details
ParameterGridViewport 3D
PriceFreeFree
Update frequencyFortnightly β€” betterEvery 2 weeks
AdsNoNo
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad β€” better
Requires iOS18.017.0 β€” better
Further details β€” not scored
Size1 MB47 MB
Age rating4+4+
DeveloperChris WangAmar Shinde

In-app purchases

None

Grid

No in-app purchases

None

Viewport 3D

No in-app purchases

Questions

Is Grid free?
Grid is free to download, with no in-app purchases.
Is Viewport 3D free?
Viewport 3D is free to download, with no in-app purchases.
Do Grid or Viewport 3D have ads?
Neither Grid nor Viewport 3D shows ads.
Which is updated more often, Grid or Viewport 3D?
Grid ships an update fortnightly, and Viewport 3D every 2 weeks. Most recently, Grid was updated on September 26, 2026 and Viewport 3D on September 21, 2026.

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