# iStamp vs PosApp

The clearest difference is update cadence: PosApp at every 4 weeks against iStamp's every 5 months. iStamp's advantage is iOS requirement (7.0 vs 11.0). On price, review sentiment, ads and in-app purchases there is nothing between them.

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

iStamp ships an update every 5 months, PosApp every 4 weeks. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | iStamp | PosApp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (25 ratings)](https://appshunter.io/ios/app/istamp-batch-watermark-photos/id604685563/reviews)** | — |
| Number of ratings | **25** | — |
| Positive reviews | 47.1% of reviews | **53.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 weeks** |
| Monetization | Free | Free |
| Size | 31 MB | 35 MB |
| Requires iOS | **7.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tektrify, Inc](https://appshunter.io/developer/400337660) | [POSAPP TECHNOLOGY JOINT STOCK COMPANY](https://appshunter.io/developer/785904349) |

## What reviewers say

### iStamp

[App page](https://appshunter.io/ios/app/istamp-batch-watermark-photos/id604685563)

Easily add custom watermarks to multiple photos simultaneously. Protect your images with text, logos, or existing graphics. Save watermark designs as templates for quick application.

**Highlights:** Batch watermarking, Add text watermarks, Add logo/image watermarks, Customizable text (color, font), Adjust watermark properties (scale, opacity, angle), Save watermark templates

**Features:** macOS Compatibility

**In-app purchases:** none


### PosApp

[App page](https://appshunter.io/ios/app/posapp-report/id1171362865)

Manage your business operations, including sales, inventory, and employee performance, from anywhere. This app provides real-time data and reports to help store owners make informed decisions and maintain continuous operations, even offline.

**Highlights:** Real-time business data access, Sales and revenue reporting, Inventory management and warnings, Employee performance tracking, Offline operation support, Order and bill management, Chain store performance overview

**In-app purchases:** none


## Frequently asked questions

### Is iStamp free?

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

### Is PosApp free?

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

### Do iStamp or PosApp have ads?

Neither iStamp nor PosApp shows ads.

### Which is updated more often, iStamp or PosApp?

iStamp ships an update every 5 months, and PosApp every 4 weeks. Most recently, iStamp was updated on November 1, 2026 and PosApp on November 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.*