# Smart PDF+ Editor vs KTrunk

The clearest difference is price: KTrunk at Free against Smart PDF+ Editor's $4.99. KTrunk also leads on review sentiment (50% vs 5%) and rating (5.0 vs 3.8). Smart PDF+ Editor's advantage is in-app purchases (none vs 3) and ratings volume (53 vs 2). On ads and device support there is nothing between them.

KTrunk is free to download; Smart PDF+ Editor costs $4.99 up front. KTrunk sells 3 one-off in-app purchases. Smart PDF+ Editor asks for nothing beyond the download.

KTrunk holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Smart PDF+ Editor has 53 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 5% of Smart PDF+ Editor's written reviews are positive against 50% of KTrunk's.

Smart PDF+ Editor ships an update every 4 months, KTrunk monthly. The most recent releases landed on September 17, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Smart PDF+ Editor | KTrunk |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [3.8 (53 ratings)](https://appshunter.io/ios/app/smart-pdf-plus-editor/id1184082898/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ktrunk/id1543722029/reviews)** |
| Number of ratings | **53** | 2 |
| Positive reviews | 5.3% of reviews | **50.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 11 MB | 10 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Qrayon, LLC](https://appshunter.io/developer/354980265) | [Clemens Schuetzdeller](https://appshunter.io/developer/1543722031) |

## What reviewers say

### Smart PDF+ Editor

[App page](https://appshunter.io/ios/app/smart-pdf-plus-editor/id1184082898)

This app allows users to read, sign, and annotate PDF documents, especially with stylus input. It's designed for professionals to quickly handle documents and for students to take notes on study materials. Features include a built-in file manager for organization.

**Highlights:** Ink annotations, Document signing, File organization, PDF reading, Document sharing

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

**In-app purchases:** none


### KTrunk

[App page](https://appshunter.io/ios/app/ktrunk/id1543722029)

This note-taking app allows you to save ideas with attached files and photos. You can create links between notes and files, and synchronize your data across devices. An optional in-app purchase enables note encryption for enhanced privacy.

**Highlights:** Save ideas with files and photos, Link notes to other notes and files, Synchronize across devices via iCloud, Notes saved in HTML format, Optional note encryption

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Operating Convenience | $0.99 | one-time |
| Privacy | $1.99 | one-time |
| #Tag-Proposals | $1.99 | one-time |


## Frequently asked questions

### Is Smart PDF+ Editor free?

Smart PDF+ Editor costs $4.99, with no in-app purchases.

### Is KTrunk free?

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

### Which has better reviews, Smart PDF+ Editor or KTrunk?

KTrunk is rated higher. Smart PDF+ Editor averages 3.8 out of 5 from 53 ratings, while KTrunk averages 5.0 from 2 ratings.

### Do Smart PDF+ Editor or KTrunk have ads?

Neither Smart PDF+ Editor nor KTrunk shows ads.

### Which is updated more often, Smart PDF+ Editor or KTrunk?

Smart PDF+ Editor ships an update every 4 months, and KTrunk monthly. Most recently, Smart PDF+ Editor was updated on September 17, 2026 and KTrunk on June 4, 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.*