# Knō vs Merge files PDF

The clearest difference is review sentiment: Knō at 100% against Merge files PDF's 26%. Knō also leads on in-app purchases (none vs 3) and iOS requirement (9.0 vs 13.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Merge files PDF sells 3 in-app purchases, starting at $0.99 per 7 days. Knō asks for nothing beyond the download.

Knō ships an update fortnightly, Merge files PDF every 2 weeks. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Knō | Merge files PDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (347 ratings)](https://appshunter.io/ios/app/merge-files-pdf/id1559819770/reviews)** |
| Number of ratings | — | **347** |
| Positive reviews | **100.0% of reviews** | 25.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 weeks |
| Monetization | **Free** | Freemium |
| Size | 100 MB | 3 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [kno](https://appshunter.io/developer/1309316330) | [Abdullah Albalawi](https://appshunter.io/developer/1008309841) |

## What reviewers say

### Knō

[App page](https://appshunter.io/ios/app/kno/id1309316331)

This app helps you manage and share your latest contact information with friends, clients, and colleagues. It ensures your contacts always have your updated details and notifies you of their changes. You maintain complete control over your data, deciding what to share and with whom.

**Highlights:** Share updated contact information, Receive contact updates from others, Control data sharing per profile, QR code for vCard sharing, Import/export vCards, Multi-profile organization

**In-app purchases:** none


### Merge files PDF

[App page](https://appshunter.io/ios/app/merge-files-pdf/id1559819770)

Combine multiple PDF documents into a single file with ease. Select your desired PDFs and merge them quickly. Unlock advanced features like sharing, renaming, and unlimited merging with a premium subscription.

**Highlights:** Merge multiple PDF files, Easy to use interface, Display merged PDF, Share merged PDF, Rename merged PDF, Unlimited merging (premium)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| weekly subscription | $0.99 | per 7 days |
| monthly subscription | $3.99 | per month |
| yearly subscription | $14.99 | per year |

**What reviewers like**

- 🚀 Merge files
- 👍 Good app
- 💡 Can get free

**What reviewers complain about**

- 🐛 Doesn't work
- 💰 Need to pay for everything
- 🔒 Can't share or save without paying
- ⚠️ Useless if you don't pay
- 🚫 Fraud app

**Reported bugs**

- Subscription issues
- Incompatible with free usage

**Requested features**

- Allow free sharing and saving of merged files
- Improve free functionality


## Frequently asked questions

### Is Knō free?

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

### Is Merge files PDF free?

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

### Do Knō or Merge files PDF have ads?

Neither Knō nor Merge files PDF shows ads.

### Which is updated more often, Knō or Merge files PDF?

Knō ships an update fortnightly, and Merge files PDF every 2 weeks. Most recently, Knō was updated on October 13, 2026 and Merge files PDF on October 24, 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.*