KTrunk vs Jotsuyo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KTrunk
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.
- 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
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Knowledge Trunk - or short KTrunk - is a note taking App. Use KTrunk to save all your ideas augmented with related files and photos. You can establish links from one note to any other note or file in KTrunk. The notes are saved in html-format and can be synchronized across your devices using iCloud. In-App-Purchases: * Privacy Allows to encrypt/decrypt your notes.
Jotsuyo
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This application is a search aid using Safari extension. Pre-registered keywords can be easily added to search keywords. Also, advanced searches such as exact match search can be easily performed.
Screenshots
Verdict
The clearest difference is in-app purchases: Jotsuyo at none against KTrunk's 3. Jotsuyo also leads on update cadence (every 3 days vs monthly) and iOS requirement (15.4 vs 18.0). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. KTrunk sells 3 one-off in-app purchases. Jotsuyo asks for nothing beyond the download.
KTrunk ships an update monthly, Jotsuyo every 3 days. Both last shipped on October 14, 2026.
| Parameter | KTrunk | Jotsuyo |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Monthly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 15.4 — better |
| Further details — not scored | ||
| Size | 10 MB | 21 MB |
| Age rating | 17+ | 4+ |
| Developer | Clemens Schuetzdeller | Shuhei Takezawa |
In-app purchases
KTrunk
- Operating Convenience$0.99
- Privacy$1.99
- #Tag-Proposals$1.99
Jotsuyo
No in-app purchases
