# SnapPDF vs EchoSense

The clearest difference is ads: EchoSense at none against SnapPDF's shown. SnapPDF's advantage is update cadence (weekly vs every 5 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SnapPDF ships an update weekly, EchoSense every 5 months. The most recent releases landed on October 9, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | SnapPDF | EchoSense |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 5 months |
| Size | 23 MB | 18 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HongKong Heavenly Limited](https://appshunter.io/developer/1771292870) | [K12 Ventures Foundation, Inc.](https://appshunter.io/developer/1665403820) |

## What reviewers say

### SnapPDF

[App page](https://appshunter.io/ios/app/snappdfsmart-scanning-and-ocr/id6730122671)

**Features:** macOS Compatibility

**In-app purchases:** none


### EchoSense

[App page](https://appshunter.io/ios/app/echosense/id6742468000)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SnapPDF free?

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

### Is EchoSense free?

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

### Do SnapPDF or EchoSense have ads?

SnapPDF shows ads; EchoSense does not.

### Which is updated more often, SnapPDF or EchoSense?

SnapPDF ships an update weekly, and EchoSense every 5 months. Most recently, SnapPDF was updated on October 9, 2026 and EchoSense on September 30, 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.*