# E vs ProStamp

The clearest difference is review sentiment: ProStamp at 100% against E's 0%. ProStamp also leads on update cadence (every 3 days vs every 9 days). E's advantage is in-app purchases (none vs 2) and device support (3 vs 1). On price, ads and monetization model there is nothing between them.

Both are free to download. ProStamp sells 2 in-app purchases, starting at $4.99 per month. E asks for nothing beyond the download.

E ships an update every 9 days, ProStamp every 3 days. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | E | ProStamp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/prostamp-timestamp-camera/id6761140743/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 3 days** |
| Monetization | Free | Free |
| Size | 28 MB | 21 MB |
| Requires iOS | **7.1** | 17.6 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [国华 章](https://appshunter.io/developer/1144430023) | [Xiao Lang](https://appshunter.io/developer/1887985261) |

## What reviewers say

### E

[App page](https://appshunter.io/ios/app/e-cam4k/id1144430024)

View and manage footage from Wi-Fi-enabled action cameras in real-time. Control recording settings, browse media, and share directly to social media. Compatible with Sharper Image action cameras.

**Highlights:** Live HD footage viewing, Camera recording control, Photo and video capture settings, Media browsing and download, Direct social media posting

**Features:** macOS Compatibility

**In-app purchases:** none


### ProStamp

[App page](https://appshunter.io/ios/app/prostamp-timestamp-camera/id6761140743)

This professional camera app automatically stamps photos and videos with essential job details like time, GPS, and weather. It creates verifiable proof of work with customizable watermarks and a built-in gallery for easy organization and sharing.

**Highlights:** Auto-stamp photos with time, GPS, and weather, Network-verified time for proof, Customizable watermarks with company logo, Built-in gallery with photo map, Batch sharing and PDF reports, Offline functionality with GPS

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ProStamp Pro | $4.99 | per month |
| ProStamp Pro | $49.99 | per year |


## Frequently asked questions

### Is E free?

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

### Is ProStamp free?

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

### Do E or ProStamp have ads?

Neither E nor ProStamp shows ads.

### Which is updated more often, E or ProStamp?

E ships an update every 9 days, and ProStamp every 3 days. Most recently, E was updated on October 4, 2026 and ProStamp on October 8, 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.*