# SnapSize vs Doc Align

The clearest difference is in-app purchases: SnapSize at none against Doc Align's 1. SnapSize also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). Doc Align's advantage is update cadence (monthly vs every 6 months). On price and device support there is nothing between them.

Both are free to download. Doc Align sells 1 one-off in-app purchase. SnapSize asks for nothing beyond the download.

SnapSize ships an update every 6 months, Doc Align monthly. The most recent releases landed on September 11, 2026 and September 2, 2026 respectively.

## The numbers

| Metric | SnapSize | Doc Align |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Monthly** |
| Size | 108 MB | 18 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [System Friend, Inc.](https://appshunter.io/developer/366253398) | [Kazuhisa Kobayashi](https://appshunter.io/developer/1580882000) |

## What reviewers say

### SnapSize

[App page](https://appshunter.io/ios/app/snapsize/id6738078747)

**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 SnapSize free?

SnapSize is free to download, with no in-app purchases.

### Is Doc Align free?

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

### Do SnapSize or Doc Align have ads?

Doc Align shows ads; SnapSize does not.

### Which is updated more often, SnapSize or Doc Align?

SnapSize ships an update every 6 months, and Doc Align monthly. Most recently, SnapSize was updated on September 11, 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.*