Comparison

PerScaler vs 建筑摄影

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

Head to head
About

PerScaler

Features
Read full description

Turn your photos into drawing references. PerScaler is a camera app designed to help you prepare photos for drawing and sketching. Crop your images, adjust perspective, and refine the composition to create references that are easier to draw from. Built with simplicity and speed in mind, PerScaler is a photo tool made specifically for artists. Key Features - Import photos from your library - Cropping - Transform (perspective & skew correction) - Composition adjustment Perfect for - Figure drawing references - Gesture drawing (croquis) - Adjusting composition for landscape sketches - Preparing images for illustration PerScaler simplifies your preparation process—so you can focus on drawing.

About

建筑摄影

Features
Read full description

This is a fully free architectural photography app. No account, sign-in, subscription, or in-app purchase is required. Please test the app on a physical iPhone because the main features require a camera and device motion sensors. On first launch: 1. Allow Camera access for live preview and photo capture. 2. Allow Microphone access when testing video recording. 3. Allow Photo Library access to save and view captured media. Two-point perspective correction is enabled by default. Tilt the iPhone upward or downward to observe the real-time vertical perspective correction in the camera preview. The app includes Photo, Video, Time-lapse, Slow Motion, and Distance Measurement modes. Distance values are visual AR estimates for reference only and are not a replacement for professional measurement equipment. All photos and videos are processed locally on the device. The app does not upload or collect user media.

Screenshots

PerScaler4 screens
建筑摄影1 screens

Verdict

The call

The clearest difference is in-app purchases: 建筑摄影 at none against PerScaler's 1. 建筑摄影 also leads on update cadence (every 5 days vs every 11 days). On price, ads, device support and iOS requirement 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

Both are free to download. PerScaler sells 1 one-off in-app purchase. 建筑摄影 asks for nothing beyond the download.

UpkeepUpdate frequency

PerScaler ships an update every 11 days, 建筑摄影 every 5 days. The most recent releases landed on October 6, 2026 and October 21, 2026 respectively.

Scorecard2 real differences · 4 level
PerScaler versus 建筑摄影: the parameters behind the verdict, then further details
ParameterPerScaler建筑摄影
PriceFreeFree
Update frequencyEvery 11 daysEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPod — betteriPhone
Requires iOS15.0 — better16.0
Further details — not scored
Size140 MB4 MB
Age rating4+4+
Developer12px, LLCliu xiaoyong

In-app purchases

1 purchases

PerScaler

One-time1
  • Buy me a coffee$0.49
None

建筑摄影

No in-app purchases

Questions

Is PerScaler free?
PerScaler is free to download, with in-app purchases available.
Is 建筑摄影 free?
建筑摄影 is free to download, with no in-app purchases.
Do PerScaler or 建筑摄影 have ads?
Neither PerScaler nor 建筑摄影 shows ads.
Which is updated more often, PerScaler or 建筑摄影?
PerScaler ships an update every 11 days, and 建筑摄影 every 5 days. Most recently, PerScaler was updated on October 6, 2026 and 建筑摄影 on October 21, 2026.

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