# Secret Delivery vs Zero Duplicates

The clearest difference is price: Zero Duplicates at Free against Secret Delivery's $0.99. Zero Duplicates also leads on rating (4.8 vs 4.0) and update cadence (weekly vs every 8 months). On ads, in-app purchases and device support there is nothing between them.

Zero Duplicates is free to download; Secret Delivery costs $0.99 up front. Secret Delivery sells 1 one-off in-app purchase and Zero Duplicates sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Zero Duplicates holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: Zero Duplicates has 65 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 71% of Secret Delivery's written reviews are positive against 80% of Zero Duplicates's.

Secret Delivery ships an update every 8 months, Zero Duplicates weekly. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Secret Delivery | Zero Duplicates |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/secret-delivery/id459678901/reviews) | **[4.8 (65 ratings)](https://appshunter.io/ios/app/zero-duplicates-file-cleaner/id6754661826/reviews)** |
| Number of ratings | 4 | **65** |
| Positive reviews | 71.4% of reviews | **80.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Weekly** |
| Monetization | Paid | **Freemium** |
| Size | 9 MB | 20 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tractus](https://appshunter.io/developer/870804567) | [Christopher Brock](https://appshunter.io/developer/1742267837) |

## What reviewers say

### Secret Delivery

[App page](https://appshunter.io/ios/app/secret-delivery/id459678901)

Securely send private messages, photos, and documents with password-protected encryption. Share files through various platforms, ensuring your sensitive information remains confidential. Recipients need the app to decrypt and access content.

**Highlights:** Encrypted text and file sharing, Password protection for messages and files, AES encryption standard, Encrypt/decrypt files outside the app, Intuitive user interface, Unlimited messages and file attachments

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Secret Delivery Pro | $0.99 | one-time |


### Zero Duplicates

[App page](https://appshunter.io/ios/app/zero-duplicates-file-cleaner/id6754661826)

Reclaim iPhone storage by finding and deleting duplicate files, even those with different names. Advanced content analysis ensures accurate identification, and a privacy-first design keeps your data local. Safely organize documents, images, videos, and more.

**Highlights:** Advanced content analysis for real duplicates, Finds duplicates with different filenames, Supports documents, images, videos, audio, and downloads, Scans iCloud Drive and external storage, Privacy-first local scanning, Auto-select duplicates by newest/oldest, Preview before deleting

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $4.99 | per month |
| Yearly Subscription | $7.99 | per year |
| Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is Secret Delivery free?

Secret Delivery costs $0.99, and also offers in-app purchases.

### Is Zero Duplicates free?

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

### Which has better reviews, Secret Delivery or Zero Duplicates?

Zero Duplicates is rated higher. Secret Delivery averages 4.0 out of 5 from 4 ratings, while Zero Duplicates averages 4.8 from 65 ratings.

### Do Secret Delivery or Zero Duplicates have ads?

Neither Secret Delivery nor Zero Duplicates shows ads.

### Which is updated more often, Secret Delivery or Zero Duplicates?

Secret Delivery ships an update every 8 months, and Zero Duplicates weekly. Most recently, Secret Delivery was updated on November 1, 2026 and Zero Duplicates on November 5, 2026.

---

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