# 4k Wallpapers, HD Backgrounds vs Captcha Stash

The clearest difference is review sentiment: Captcha Stash at 100% against 4k Wallpapers, HD Backgrounds's 64%. Captcha Stash also leads on in-app purchases (none vs 1) and ads (none vs shown). 4k Wallpapers, HD Backgrounds's advantage is ratings volume (36 vs 1) and update cadence (every 2 months vs every 4 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 4k Wallpapers, HD Backgrounds sells 1 one-off in-app purchase. Captcha Stash asks for nothing beyond the download.

Captcha Stash holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: 4k Wallpapers, HD Backgrounds has 36 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 64% of 4k Wallpapers, HD Backgrounds's written reviews are positive against 100% of Captcha Stash's.

4k Wallpapers, HD Backgrounds ships an update every 2 months, Captcha Stash every 4 months. The most recent releases landed on August 13, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | 4k Wallpapers, HD Backgrounds | Captcha Stash |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (36 ratings)](https://appshunter.io/ios/app/4k-wallpapers-hd-backgrounds/id1585787164/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/captcha-stash/id6749536677/reviews)** |
| Number of ratings | **36** | 1 |
| Positive reviews | 63.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 28 MB | 5 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [AKSIONOV VIKTOR](https://appshunter.io/developer/1481644659) | [Alastair Bor](https://appshunter.io/developer/1824969204) |

## What reviewers say

### 4k Wallpapers, HD Backgrounds

[App page](https://appshunter.io/ios/app/4k-wallpapers-hd-backgrounds/id1585787164)

Discover and download a vast collection of high-quality HD and 4K wallpapers specifically curated for all iPhone models. Easily find and set the perfect background to express your style with a simple interface and organized categories.

**Highlights:** Download free HD and 4K wallpapers, Wallpapers for all iPhone models, Simple interface for easy selection, Sort by popularity, rating, and date, Multiple categories and tags for search, Low storage and battery consumption

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $1.99 | one-time |


### Captcha Stash

[App page](https://appshunter.io/ios/app/captcha-stash/id6749536677)

This app provides a secure vault for your sensitive notes and private information, using CAPTCHA verification to ensure only humans can access it. All data is stored locally and encrypted, with options for self-destruction after failed attempts. It offers a distraction-free interface and works entirely offline.

**Highlights:** Human-only CAPTCHA authentication, On-device encrypted local storage, Self-destruct after failed attempts, No user accounts or cloud backups, Minimalist note-taking interface, Customizable CAPTCHA modes, Fully offline and ad-free operation

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

**In-app purchases:** none


## Frequently asked questions

### Is 4k Wallpapers, HD Backgrounds free?

4k Wallpapers, HD Backgrounds is free to download, with in-app purchases available.

### Is Captcha Stash free?

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

### Which has better reviews, 4k Wallpapers, HD Backgrounds or Captcha Stash?

Captcha Stash is rated higher. 4k Wallpapers, HD Backgrounds averages 4.8 out of 5 from 36 ratings, while Captcha Stash averages 5.0 from 1 ratings.

### Do 4k Wallpapers, HD Backgrounds or Captcha Stash have ads?

4k Wallpapers, HD Backgrounds shows ads; Captcha Stash does not.

### Which is updated more often, 4k Wallpapers, HD Backgrounds or Captcha Stash?

4k Wallpapers, HD Backgrounds ships an update every 2 months, and Captcha Stash every 4 months. Most recently, 4k Wallpapers, HD Backgrounds was updated on August 13, 2026 and Captcha Stash on September 17, 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.*