# Dunova VPN vs QuickErrNote

Dunova VPN and QuickErrNote are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Dunova VPN sells 4 in-app purchases, starting at $1.99 per month and QuickErrNote sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Dunova VPN ships an update every 6 days, QuickErrNote every 5 days. The most recent releases landed on September 25, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Dunova VPN | QuickErrNote |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (7 ratings)](https://appshunter.io/ios/app/dunova-vpn-fast-and-secure/id6776506440/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 57 MB | 6 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CloudEx Inc.](https://appshunter.io/developer/1684103591) | [HappyTimes Tech Co., Ltd.](https://appshunter.io/developer/1455774641) |

## What reviewers say

### Dunova VPN

[App page](https://appshunter.io/ios/app/dunova-vpn-fast-and-secure/id6776506440)

Protect your internet connection on public Wi-Fi, access geo-restricted content, and hide your IP address. Offers smart auto-connect and a lifetime purchase option for ongoing privacy and security.

**Highlights:** Public Wi-Fi protection, Access geo-restricted content, Hide IP and location, Smart auto-connect, Servers in 40+ cities, Lifetime purchase option, Ad-blocking DNS

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dunova VPN (1 Month) | $1.99 | per month |
| Dunova VPN (6 Months) | $8.99 | per 6 months |
| Dunova VPN (1 Year) | $12.99 | per year |
| Dunova VPN (Lifetime Access) | $9.99 | one-time |


### QuickErrNote

[App page](https://appshunter.io/ios/app/quickerrnote-ai-error-notebook/id6801344489)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 120 Points | $0.99 | one-time |
| 400 Points | $1.99 | one-time |
| 3500 Points | $12.99 | one-time |


## Frequently asked questions

### Is Dunova VPN free?

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

### Is QuickErrNote free?

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

### Do Dunova VPN or QuickErrNote have ads?

Neither Dunova VPN nor QuickErrNote shows ads.

### Which is updated more often, Dunova VPN or QuickErrNote?

Dunova VPN ships an update every 6 days, and QuickErrNote every 5 days. Most recently, Dunova VPN was updated on September 25, 2026 and QuickErrNote on September 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.*