Stackfield vs PortApp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stackfield
This app provides an integrated platform for teams to manage projects, tasks, and documents collaboratively. It offers secure communication channels and data protection with end-to-end encryption, ensuring compliance and data control.
- Workspace creation
- Team and compliance management
- Secure team communication
- Task and document management
- Calendar integration
- End-to-end encryption
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Stackfield is an all-in-one project management tool that enables collaborative work on tasks, documents, and projects – with the option to protect data using end-to-end encryption when required. What features does Stackfield offer? • Create a dedicated workspace for each project or department • Manage your team and the compliance guidelines centrally • Communicate with your team at any time via group chats, discussions, or comments • Each workspace includes the essential tools for everyday work: chat, discussions, documents, task and file management, and a calendar Who is Stackfield for? Stackfield is designed for teams of all sizes that collaborate on projects and communicate with one another, especially when data security is a key concern. Stackfield is based in Germany, is GDPR-compliant, ISO-certified, and hosts all data exclusively in German data centers. Thanks to client-side encryption, you retain full control over your data at all times.
PortApp
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Diese App durchsucht die druckgraphischen Porträts der HAB Wolfenbüttel nach Ähnlichkeit zu einem von Ihnen bestimmten Bild. Sie können dafür in der Porträtsammlung ein Bild auswählen oder ein eigenes Bild hochladen. Hochgeladene Bilder werden nach der Auswertung sofort gelöscht. Projektbeteiligte • Projektleitung: Dr. Hartmut Beyer (HAB), Prof. Dr. Thomas Mandl (Universität Hildesheim) und Dr. Hole Rößler (HAB) • Programmierung Bildähnlichkeitssuche: Sebastian Diem (Universität Hildesheim) • Kunsthistorische Bearbeitung: Dr. Nina Niedermeier und Mira Marx (HAB) • App-Entwicklung: AppPlusMobile Systemhaus GmbH, Dortmund • Finanzierung: Das Projekt wurde finanziert vom Niedersächsischen Ministerium für Wissenschaft und Kultur aus Mitteln des Niedersächsischen Vorab.
Screenshots
Verdict
The clearest difference is update cadence: Stackfield at every 3 months against PortApp's every 10 months. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Stackfield ships an update every 3 months, PortApp every 10 months. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.
| Parameter | Stackfield | PortApp |
|---|---|---|
| Price | Free | Free |
| Rating | 1.3 (3 ratings) — better | — |
| Positive reviews | 48.5% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 3 months — better | Every 10 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 6 MB | 24 MB |
| Age rating | 4+ | 12+ |
| Developer | Stackfield GmbH | AppPlusMobile Systemhaus GmbH |
In-app purchases
Stackfield
No in-app purchases
PortApp
No in-app purchases









