# ZPA App vs StainlessNetwork

The clearest difference is in-app purchases: StainlessNetwork at none against ZPA App's 39. StainlessNetwork also leads on update cadence (every 3 weeks vs every 23 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ZPA App sells 39 one-off in-app purchases. StainlessNetwork asks for nothing beyond the download.

ZPA App ships an update every 23 months, StainlessNetwork every 3 weeks. Both last shipped on October 8, 2026.

## The numbers

| Metric | ZPA App | StainlessNetwork |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 3 weeks** |
| Monetization | Subscription | — |
| Size | 161 MB | 181 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Dr. R. Kaden Verlag GmbH & Co. KG](https://appshunter.io/developer/787059978) | [Verlag Focus Rostfrei GmbH](https://appshunter.io/developer/1814828783) |

## What reviewers say

### ZPA App

[App page](https://appshunter.io/ios/app/zpa-app/id1273131865)

This app provides ophthalmologists with a leading continuing education journal. It features comprehensive reviews on current diagnostic and therapeutic topics, CME credits, congress reports, and international literature summaries. Published 11 times annually, it keeps eye care professionals updated.

**Highlights:** Comprehensive review articles, CME continuing education credits, Congress reports, International literature summaries, News from ophthalmology, Digital journal access

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

**In-app purchases (39)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ZPA 1/2023 | $9.99 | one-time |
| ZPA 2/2023 | $9.99 | one-time |
| ZPA 3/2023 | $9.99 | one-time |
| ZPA 4/2023 | $9.99 | one-time |
| ZPA 5/2023 | $9.99 | one-time |
| ZPA 6/2023 | $9.99 | one-time |
| ZPA 7+8/2023 | $9.99 | one-time |
| ZPA 9/2023 | $9.99 | one-time |
| ZPA 10/2023 | $9.99 | one-time |
| ZPA 11/2023 | $9.99 | one-time |
| ZPA 12/2023 | $9.99 | one-time |
| ZPA 1/2024 | $9.99 | one-time |
| ZPA 2/2024 | $9.99 | one-time |
| ZPA 3/2024 | $9.99 | one-time |
| ZPA 4/2024 | $9.99 | one-time |
| ZPA 5/2024 | $9.99 | one-time |
| ZPA 4/2026 | $9.99 | one-time |
| ZPA 5/2026 | $9.99 | one-time |
| ZPA 6/2026 | $9.99 | one-time |
| ZPA 1/2026 | $9.99 | one-time |
| ZPA 2/2026 | $9.99 | one-time |
| ZPA 3/2026 | $9.99 | one-time |
| ZPA 11/2025 | $9.99 | one-time |
| ZPA 12/2025 | $9.99 | one-time |
| ZPA 10/2025 | $9.99 | one-time |
| ZPA 9/2025 | $9.99 | one-time |
| ZPA 7+8/2025 | $9.99 | one-time |
| ZPA 6/2025 | $9.99 | one-time |
| ZPA 5/2025 | $9.99 | one-time |
| ZPA 4/2025 | $9.99 | one-time |
| ZPA 3/2025 | $9.99 | one-time |
| ZPA 2/2025 | $9.99 | one-time |
| ZPA 1/2025 | $9.99 | one-time |
| ZPA 12/2024 | $9.99 | one-time |
| ZPA 11/2024 | $9.99 | one-time |
| ZPA 10/2024 | $9.99 | one-time |
| ZPA 9/2024 | $9.99 | one-time |
| ZPA 7+8/2024 | $9.99 | one-time |
| ZPA 6/2024 | $9.99 | one-time |


### StainlessNetwork

[App page](https://appshunter.io/ios/app/stainlessnetwork/id6746043119)

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

**In-app purchases:** none


## Frequently asked questions

### Is ZPA App free?

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

### Is StainlessNetwork free?

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

### Do ZPA App or StainlessNetwork have ads?

Neither ZPA App nor StainlessNetwork shows ads.

### Which is updated more often, ZPA App or StainlessNetwork?

ZPA App ships an update every 23 months, and StainlessNetwork every 3 weeks. Most recently, ZPA App was updated on October 8, 2026 and StainlessNetwork on October 8, 2026.

---

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