# KTrunk vs pastack

The clearest difference is in-app purchases: pastack at none against KTrunk's 3. pastack also leads on update cadence (every 10 days vs monthly) and iOS requirement (15.0 vs 18.0). KTrunk's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. KTrunk sells 3 one-off in-app purchases. pastack asks for nothing beyond the download.

KTrunk ships an update monthly, pastack every 10 days. The most recent releases landed on June 4, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | KTrunk | pastack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ktrunk/id1543722029/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 10 days** |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 10 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Clemens Schuetzdeller](https://appshunter.io/developer/1543722031) | [shintarou kawara](https://appshunter.io/developer/911229261) |

## What reviewers say

### 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 |


### pastack

[App page](https://appshunter.io/ios/app/pastack/id1597700110)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KTrunk free?

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

### Is pastack free?

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

### Do KTrunk or pastack have ads?

pastack shows ads; KTrunk does not.

### Which is updated more often, KTrunk or pastack?

KTrunk ships an update monthly, and pastack every 10 days. Most recently, KTrunk was updated on June 4, 2026 and pastack on September 14, 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.*