Comparison

Caply vs Dioptra

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

Head to head
About

Caply

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Welcome to Version 1.1! Caply is continuously evolving. You can send feedback and feature requests directly through the built-in feedback form – I look forward to your ideas! Transform boring screen captures into professional design assets – directly on your Mac, iPhone, and iPad. Tired of messy desktop backgrounds and flat screenshots? Caply is your personal design studio for screen captures. Whether you are a developer creating App Store assets, a designer presenting mockups, or a social media manager crafting the perfect post: Caply makes your work presentable in seconds. Why Caply? Caply combines powerful image processing with smart automation. It is the tool that saves you the tedious manual work in complex graphic design software. Key Features in Detail: - Intelligent Automation (Smart Features): Auto-Crop: Caply automatically detects borders around windows or objects and crops them pixel-perfectly. No more manual cropping required! Seamless Integration: Caply automatically detects your screenshot's background color to perfectly fill transparency within the frame. Background Selection: Choose the canvas background from curated gradients (like "Hyper", "Ocean", "Sunset") or solid colors. - Professional Styling: Perfect Framing: Add inner and outer padding and round the corners to create a modern, polished look. Depth with Shadows: Make your screenshots pop with precise control over shadow radius, opacity, and offset. - Seamless Workflow Across All Devices: Mac Power: Use global keyboard shortcuts to open screenshots directly in Caply, or use the convenient menu bar app. Drag & Drop is fully supported. Seamless iOS Integration: Send images directly to Caply using the 'Share' button in Safari, Photos, or Files – no extra steps. - Privacy by Default: We believe your data belongs to you. Caply processes all images 100% locally on your device. There is no cloud requirement, no account needed, and no hidden uploads. Even anonymous crash reporting is completely optional and can be disabled in Settings at any time. - Export & Share: Copy the finished result to your clipboard with one click (perfect for Slack, Teams, or Discord). Save it as a high-quality PNG file or export directly to your Photos library. - Who is Caply for? Developers: Create consistent screenshots for GitHub Readmes or the App Store. Designers: Share quick design iterations that look "finished". Content Creators: Post beautiful code snippets or UI details on Twitter/X and LinkedIn. Educators & Documentation: Create clean, distraction-free guides.

About

Dioptra

Features
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A 3D model viewer for iPhone and iPad that takes measurement seriously. Open a file, turn it over, and tap two points on the surface to get a real distance. FORMATS • glTF — .glb and .gltf • USD — .usdz, .usdc, .usda and .usd • STL — 3D prints and CAD exports, read in millimetres and turned upright • PLY — scans and photogrammetry, with per-vertex colour • VRM • Interactive pages — an .html export keeps its own controls and runs as it was built MEASURE • Tap two points for a true distance • Take as many measurements as you need; they stay listed with the model • Switch between metric and imperial whenever you like • Set what one file unit means: metres, centimetres, millimetres, inches or feet INSPECT • Orbit, pan and zoom, or leave it turning on its own • Wireframe, to see how a mesh is built • Studio, light and dark backgrounds • Play embedded animations, one clip at a time • Model info: width, height and depth, plus triangles, vertices, meshes, materials, textures, nodes and animations • Share a snapshot of the view ORGANISE • Folders, which appear in the Files app exactly as they do here • Search, sort by name, type or date, and switch between a list and a grid • Rename, drag a model onto a folder to file it, or delete it • Bring models in with the picker, from another app's share sheet, or by dropping them into the Dioptra folder in Files SAMPLES Six models come with the app, one for each kind of file it opens, all built to real-world scale: the ancient sighting instrument the app is named for, a Roman surveyor's groma, a sundial's gnomon, a tripod foot in millimetres, a surveyed patch of terrain, and an interactive plan of sight lines. PRIVATE BY DEFAULT No account, no sign-in, no cloud, no tracking and no ads. Your models stay on your device and everything works offline.

Screenshots

Caply4 screens
Dioptra4 screens

Verdict

The call

The clearest difference is price: Dioptra at Free against Caply's $4.99. Dioptra also leads on iOS requirement (17.0 vs 26.2). Caply's advantage is in-app purchases (none vs 3). On update cadence, ads and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

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

Dioptra is free to download; Caply costs $4.99 up front. Dioptra sells 3 one-off in-app purchases. Caply asks for nothing beyond the download.

UpkeepUpdate frequency

Caply ships an update every 3 weeks, Dioptra fortnightly. The most recent releases landed on October 25, 2026 and November 10, 2026 respectively.

Scorecard3 real differences Ā· 3 level
Caply versus Dioptra: the parameters behind the verdict, then further details
ParameterCaplyDioptra
Price$4.99Free — better
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS26.217.0 — better
Further details — not scored
Size4 MB5 MB
Age rating4+4+
DeveloperMarc IdelbergerZachary Griffin

In-app purchases

None

Caply

No in-app purchases

3 purchases

Dioptra

One-time3
  • Small Tip$0.99
  • Tip$1.99
  • Generous Tip$4.99

Questions

Is Caply free?
Caply costs $4.99, with no in-app purchases.
Is Dioptra free?
Dioptra is free to download, with in-app purchases available.
Do Caply or Dioptra have ads?
Neither Caply nor Dioptra shows ads.
Which is updated more often, Caply or Dioptra?
Caply ships an update every 3 weeks, and Dioptra fortnightly. Most recently, Caply was updated on October 25, 2026 and Dioptra on November 10, 2026.

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