Comparison

Perspective Crop Lens vs Camera 3D AI

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

Head to head
About

Perspective Crop Lens

Correct distorted photos by accurately cropping them to right angles. This tool allows you to extract specific rectangular areas from images, even when taken at an angle or due to lens distortion. You can also add perspective effects to existing photos.

Highlights
  • Real-time cropped image preview
  • Magnifying glass for precise crop mark adjustment
  • Intuitive pinch-to-zoom for aspect ratio
  • Color-coded alignment guides
  • Add perspective effects to photos
  • Import photos from camera, album, or shared files
Features
Read full description

Even if you intend to take a photo from the front, the image can be distorted due to the angle of the device or the camera lens. TV screens, exhibits, whiteboards, signboards, posters, documents, photos, blackboards, paintings, calligraphy works, timetables, smartphone screens, etc. Also, there are many cases where it is not possible to take pictures from directly in front due to physical constraints. From such perspective-distorted photos, you can quickly cut out only the necessary parts at right angles. Cuts out a free-form rectangle from a photo and generates a new rectangular image with right angles. The “Cropped Image View” allows you to enjoy working while seeing the results in real time. Moreover··· Conversely, you can also add a perspective effect to a monotonous photo. [Features] ・“Cropped Image View” that can be checked in real time ・Use the "Magnifying Glass" to fine-tune crop marks as you wish ・ Intuitive pinch operation for adjusting the aspect ratio ・Horizontal/vertical alignment between cutout marks is also informed by color. [Photo Source] ・Start the camera and take a photo ・Select photo from photo album ・Import shared files from other apps ・Paste photos copied from web images, etc. [Outputs] ・Image file storage: Photo album (camera roll) ・Image file sharing: AirDrop, LINE, Facebook, Dropbox, Instagram,...

About

Camera 3D AI

Features
Read full description

Camera 3D AI is an iPhone camera app that blends the vibe of a 1990s SLR with modern on‑device AI depth and true 3‑D imaging. Main features: • Camera switch – one tap toggles back ↔ front and cycles through multiple lenses (wide, ultra‑wide, tele). • Continuous zoom – slider zooms 1×–5× in real time with no preview interruption. • Focus – center autofocus. • White balance – single button sets a natural colour temperature. • Anaglyph 3‑D – the shutter grabs a colour frame plus an AI depth map; the 3‑D algorithm shifts left/right channels to generate a red‑cyan anaglyph shown full‑screen, closable with X and savable to Camera Roll. You’ll need red‑cyan glasses (e.g. Rainbow Symphony ProView) to enjoy the 3‑D effect. Parallax strength The Max Parallax setting lets you choose how strongly the left‑ and right‑eye views are separated when the app builds a red‑cyan 3‑D image. A larger value increases the depth effect, but too much separation can make pictures uncomfortable to view. Use the scrolling picker to select any even value from 10 px (subtle depth) up to 150 px (very pronounced depth); the default is 20 px. Save destination Under Save location you can decide where finished 3‑D photos are written: • Photo Library – adds the image to your Camera Roll only (default). • Documents – saves the file into the app’s Documents folder (visible in the Files app) but does not appear in Photos. • Both – writes one copy to the Photo Library and another to Documents. The app remembers your choice, so you can tailor the workflow to whether you prefer immediate sharing from Photos or manual file management in Files. All processing is on‑device – no cloud, no sign‑up, no tracking analytics. The app wants to access the camera to take 3‑D photos. Allow it by accepting “Camera 3D AI Would Like to Access the Camera – Capture photos” When you press the shutter, the app wants to save the generated 3‑D photo to your photo library. Allow it by accepting “Camera 3D AI Would Like to Add to Your Photos – Add 3‑D photos to the photo library”

Screenshots

Perspective Crop Lens4 screens
Camera 3D AI2 screens

Verdict

The call

The clearest difference is price: Perspective Crop Lens at $1.99 against Camera 3D AI's $6.99. Perspective Crop Lens also leads on chart position (#198 vs unranked) and iOS requirement (13.0 vs 17.6). On update cadence, ads, in-app purchases and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Perspective Crop Lens costs $1.99 and Camera 3D AI $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Perspective Crop Lens ships an update every 3 months, Camera 3D AI every 4 months. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 8 level
Perspective Crop Lens versus Camera 3D AI: the parameters behind the verdict, then further details
ParameterPerspective Crop LensCamera 3D AI
Price$1.99 — better$6.99
Rating5.0 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 3 months — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
Best chart rank#198 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.6
Further details — not scored
Size2 MB53 MB
Age rating4+4+
DeveloperMasanori KatsutaArtificial Intelligence Technologies J.K. Oy

In-app purchases

None

Perspective Crop Lens

No in-app purchases

None

Camera 3D AI

No in-app purchases

Questions

Is Perspective Crop Lens free?
Perspective Crop Lens costs $1.99, with no in-app purchases.
Is Camera 3D AI free?
Camera 3D AI costs $6.99, with no in-app purchases.
Do Perspective Crop Lens or Camera 3D AI have ads?
Neither Perspective Crop Lens nor Camera 3D AI shows ads.
Which is updated more often, Perspective Crop Lens or Camera 3D AI?
Perspective Crop Lens ships an update every 3 months, and Camera 3D AI every 4 months. Most recently, Perspective Crop Lens was updated on November 4, 2026 and Camera 3D AI on October 30, 2026.

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