# Adjust Perspective — Perspective Correction

> App corrects photo distortion and perspective, transforming quadrilaterals into rectangles. (iPhone/iPad app by Masanori Katsuta.)

- Source: https://appshunter.io/ios/app/adjust-perspective/id1459794742 (this page in markdown: same URL + `.md`)
- Developer: [Masanori Katsuta](https://appshunter.io/developer/320172788)
- Category: Photo & Video, Graphics & Design
- Price: $0.99
- Rating: 1.00/5 from 2 App Store ratings · 10 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 1 MB
- Languages: Japanese, American English
- Released: 2019-04-17
- Data updated: 2026-08-30
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/adjust-perspective/id1459794742/reviews.md

## What is Adjust Perspective?

This is a camera app that corrects distortion and perspective of photos.

Whole photo, Documents, posters, arts such as paintings and calligraphy, exhibits, screens, blackboards, whiteboards, signs, screens, timetables, etc.
You may want to leave a photo as a memo by taking photos with your smartphone camera or tablet camera.
The problem is that the image of the picture is distorted by the influence of the camera lens.

Even if the subject is at a right angle, it will not be a right angle photo.
If the subject is rectangular, it will be a quadrangle with perspective.

You can convert such perspective distorted quadrangle to the original subject rectangle.

Cut out a free-form quadrangle from the photo and convert it to a rectangle.
The cropping quadrangle does not have to be a right angle, and it is OK to use a trapezoid, a rhombus, a parallelogram, or a freeform quadrangle.

If you can not shoot the subject directly in front of you, the photos will have perspective.
To be precise, even if taken straight ahead, some distortion is inevitable.

However, with this app, even photos taken from an oblique direction can be converted to rectangular images viewed from the front.

You can edit the position of the corner mark for clipping while checking the clipping image on the preview screen in real time.

Material picture
- Photographing (camera)
- Selection of photo (camera roll)

Save cropped image
- Save image (Camera roll)
- Image sharing (Twitter, Facebook, LINE, Dropbox etc.)

Cropped image settings
- 4 corner marks for clipping (movement by drag operation)
- The amount of movement of the corner mark
- aspect ratio
- Horizontal perspective correction
- Vertical perspective correction
- Resolution of saved image

## Key features

- Corrects photo distortion
- Perspective correction
- Transforms quadrilaterals to rectangles
- Real-time corner editing
- Supports various subjects (documents, art, signs)
- Image sharing

## Recent user reviews (10 of 10)

All indexed reviews: https://appshunter.io/ios/app/adjust-perspective/id1459794742/reviews.md

### 1/5 — 絶対に買うな

*2025-10-04*

レビューを見ずに購入した自分が馬鹿に思えます。即アンストです。
操作性が悪く画像内が湾曲してしまいまいます。それに写真と書いてあるので動画も補正出来るのかと思いましたがインポート出来ませんでした。
詐欺に引っかかった気分です。

### 1/5 — ホームボタン消えてる機種では使えない

*2025-01-24*

ホームボタン消えてる機種の人は買わない方がいいです　あと単純に驚きの使いづらさ

### 1/5 — 絶対買うな‼️

*2022-07-21*

全く使えない。
反応が遅く、また、キャンセルできない。
買って大後悔。

### 1/5 — 使えない

*2021-04-10*

操作がもっさりして使うものになりません。お金返して欲しい。レビューを読めば良かった。

### 2/5 — あおり加工は出来ない

*2020-08-19*

コメントに使いものにならないとあったが建築写真をあおり加工してみようと購入したが湾曲して使えない。120円だからと購入したからゴミ箱に入れる予定。

### 1/5 — 動きが遅い、操作方法が直感的ではない

*2020-05-19*

かたまる。
使い勝手悪い。

### 2/5 — 使いにくい

*2019-11-24*

元画像からかけ離れた画像になって調整するのに時間がかかり過ぎ
使い勝手が悪いので使えない
せっかく購入したのに残念

### 1/5 — Not user friendly.  No UNDO

*2019-11-06*

I got this app thinking that I would be able to correct the perspective on some architectural photos.  All it did was distort them horribly.  The slider moves too much too fast and the processing cannot keep up with it.  What happens is that you try to compensate for what you just messed up and it makes it even worse.  Maybe there should be just a “tilt” function that would change trapezoids to rectangles.  Really, that’s all I was trying to do and I never did get it to do that.  Worst of all, there is NO undo button.  What kind of app doesn’t have an undo??? It reminds me of those kids’ apps that kids use to distort faces.

### 2/5 — 保存出来ない

*2019-09-03*

iphonex ios12.4で保存出来ない

### 5/5 — これ使えます!

*2019-04-27*

黒板とかモニター画面とか斜めからしか撮れなかった写真を整形できるのが便利ですね。

## Frequently asked questions about Adjust Perspective

### What is Adjust Perspective used for?

Adjust Perspective is a camera app designed to correct distortion and perspective in photos. It transforms skewed quadrilaterals, like those of documents or posters taken at an angle, into perfect rectangles.

### Can Adjust Perspective fix photos taken from an oblique direction?

Yes, even if a subject is not photographed directly in front, Adjust Perspective can convert these photos into rectangular images as if viewed from the front.

### How does Adjust Perspective allow for precise editing?

The app provides four corner marks for clipping that can be moved by drag operation. You can edit the position of these corner marks while checking the clipping image on the preview screen in real time.

### What types of subjects can Adjust Perspective work with?

It is suitable for a wide range of subjects including documents, posters, arts, exhibits, screens, blackboards, whiteboards, signs, and timetables.

### What devices is Adjust Perspective compatible with?

Adjust Perspective is available for iPhone, iPad, and iPod devices.

### How often is Adjust Perspective updated?

The latest version, 1.0.3, was released on November 1, 2022. The app was originally released on April 17, 2019.

### What is the price of Adjust Perspective?

Adjust Perspective is a paid app, priced at $0.99.

### Does Adjust Perspective have ads?

No, Adjust Perspective does not contain advertisements.

## Version history (last 3 releases)

### 1.0.3 — 2022-11-01

- The drawing process has been sped up.
- Compatible with safe areas.
- Fixed mark movement processing.

### 1.0.2 — 2019-09-03

Increased resolution of saved images.

### 1.0.1 — 2019-04-17

No release notes.

## Apps similar to Adjust Perspective

| App | Rating | Price | Category |
| --- | --- | --- | --- |
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| [VR Video Play](https://appshunter.io/ios/app/vr-video-play/id1253854523) | — | $0.99 | Photo & Video |
| [3D Cam SBS](https://appshunter.io/ios/app/3d-cam-sbs/id6751776334) | — | $1.99 | Photo & Video |
| [Angle Adjustment Photo Editor](https://appshunter.io/ios/app/angle-adjustment-photo-editor/id6705131984) | — | Free | Photo & Video |
| [Photo Perspective](https://appshunter.io/ios/app/photo-perspective/id894808978) | 2.2 (19) | $0.99 | Photo & Video |
| [3D Camera One Shot](https://appshunter.io/ios/app/3d-camera-one-shot/id6447684484) | 2.0 (1) | $3.99 | Photo & Video |

## More apps by Masanori Katsuta

- [See-Through Camera](https://appshunter.io/ios/app/see-through-camera/id545626309)
- [NightScope+](https://appshunter.io/ios/app/nightscope-plus/id571926077)
- [Beautiful Legs Camera HD](https://appshunter.io/ios/app/beautiful-legs-camera-hd/id591781406)
- [Bon-Q-Bon Camera](https://appshunter.io/ios/app/bon-q-bon-camera/id733497157)
- [PlaceNotes+](https://appshunter.io/ios/app/placenotes-plus/id901148164)
- [Ripple Camera](https://appshunter.io/ios/app/ripple-camera/id939375856)

All apps by Masanori Katsuta: https://appshunter.io/developer/320172788

## Related topics

[perspective corrector](https://appshunter.io/ios/topics/perspective-corrector) · [perspective cards](https://appshunter.io/ios/topics/perspective-cards)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-30.*