# DjVuView vs hYYa Encrypted Notes & Sync

The clearest difference is update cadence: hYYa Encrypted Notes & Sync at every 3 days against DjVuView's monthly. DjVuView's advantage is iOS requirement (15.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. DjVuView sells 1 one-off in-app purchase and hYYa Encrypted Notes & Sync sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

DjVuView ships an update monthly, hYYa Encrypted Notes & Sync every 3 days. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | DjVuView | hYYa Encrypted Notes & Sync |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Size | 5 MB | 7 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Bostan Constantin](https://appshunter.io/developer/853940020) | [Hassaan Abdeen](https://appshunter.io/developer/1866789892) |

## What reviewers say

### DjVuView

[App page](https://appshunter.io/ios/app/djvuview/id6774936684)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DjVu Pro | $1.89 | one-time |


### hYYa Encrypted Notes & Sync

[App page](https://appshunter.io/ios/app/hyya-encrypted-notes-and-sync/id6792328099)

**Features:** iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| hYYa Encrypted Notes Pro | $19.99 | one-time |


## Frequently asked questions

### Is DjVuView free?

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

### Is hYYa Encrypted Notes & Sync free?

hYYa Encrypted Notes & Sync is free to download, with in-app purchases available.

### Do DjVuView or hYYa Encrypted Notes & Sync have ads?

Neither DjVuView nor hYYa Encrypted Notes & Sync shows ads.

### Which is updated more often, DjVuView or hYYa Encrypted Notes & Sync?

DjVuView ships an update monthly, and hYYa Encrypted Notes & Sync every 3 days. Most recently, DjVuView was updated on November 5, 2026 and hYYa Encrypted Notes & Sync on November 10, 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.*