# シンプル台形補正 vs Doc Align

The clearest difference is price: Doc Align at Free against シンプル台形補正's $1.99. Doc Align also leads on device support and iOS requirement (15.0 vs 18.0). シンプル台形補正's advantage is in-app purchases (none vs 1). On update cadence there is nothing between them.

Doc Align is free to download; シンプル台形補正 costs $1.99 up front. Doc Align sells 1 one-off in-app purchase. シンプル台形補正 asks for nothing beyond the download.

シンプル台形補正 ships an update every 2 months, Doc Align monthly. The most recent releases landed on September 23, 2026 and September 2, 2026 respectively.

## The numbers

| Metric | シンプル台形補正 | Doc Align |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | — | Yes |
| Update frequency | Every 2 months | **Monthly** |
| Size | 1 MB | 18 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [yoshio konosu](https://appshunter.io/developer/1478856763) | [Kazuhisa Kobayashi](https://appshunter.io/developer/1580882000) |

## What reviewers say

### シンプル台形補正

[App page](https://appshunter.io/ios/app/id6746684801)

**In-app purchases:** none


### Doc Align

[App page](https://appshunter.io/ios/app/doc-align-perspective-fixer/id6748571837)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


## Frequently asked questions

### Is シンプル台形補正 free?

シンプル台形補正 costs $1.99, with no in-app purchases.

### Is Doc Align free?

Doc Align is free to download, with in-app purchases available.

### Which is updated more often, シンプル台形補正 or Doc Align?

シンプル台形補正 ships an update every 2 months, and Doc Align monthly. Most recently, シンプル台形補正 was updated on September 23, 2026 and Doc Align on September 2, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*