# Unmarkit PDF vs Vibro AI

Unmarkit PDF and Vibro AI 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. Unmarkit PDF sells 10 in-app purchases, starting at $9.00 per month and Vibro AI sells 6 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Unmarkit PDF ships an update every 3 weeks, Vibro AI every 6 weeks. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Unmarkit PDF | Vibro AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Size | 89 MB | 54 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Shopsense Retail Technologies Limited](https://appshunter.io/developer/979824525) | [Muhammad Ishaq](https://appshunter.io/developer/1863665633) |

## What reviewers say

### Unmarkit PDF

[App page](https://appshunter.io/ios/app/unmarkit-pdf/id6751706730)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 credits monthly Plan | $9.00 | per month |
| 100 Credits monthly Plan | $19.00 | per month |
| 120 Credits yearly Plan | $60.00 | per year |
| 1200 Credits yearly Plan | $114.99 | per year |
| 5 credits add-on plan | $3.00 | one-time |
| 20 credits add-on plan | $5.00 | one-time |
| 100 credits add-on plan | $12.00 | one-time |
| 15 credits add-on plan | $12.00 | one-time |
| 40 credits add-on plan | $19.00 | one-time |
| 200 credits add-on plan | $39.00 | one-time |


### Vibro AI

[App page](https://appshunter.io/ios/app/vibro-ai/id6788257604)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $9.99 | per 7 days |
| Monthly Subscription | $24.99 | per month |
| Yearly Subscription | $39.99 | per year |
| Small Pack | $7.99 | one-time |
| Medium Pack | $14.99 | one-time |
| Large Pack | $29.99 | one-time |


## Frequently asked questions

### Is Unmarkit PDF free?

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

### Is Vibro AI free?

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

### Do Unmarkit PDF or Vibro AI have ads?

Neither Unmarkit PDF nor Vibro AI shows ads.

### Which is updated more often, Unmarkit PDF or Vibro AI?

Unmarkit PDF ships an update every 3 weeks, and Vibro AI every 6 weeks. Most recently, Unmarkit PDF was updated on November 8, 2026 and Vibro AI 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.*