SHACK15 vs PSST Forum
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SHACK15
This app provides a seamless way to access a unique social space. Users can easily book rooms, reserve event spots, and order food and drinks. It also helps manage reservations and membership details.
- Book meeting rooms
- Reserve event spots
- Order food and drinks
- Manage reservations
- Access membership
- View upcoming programs
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The SHACK15 app is your personal gateway to the SHACK15 experience. Effortlessly book meeting rooms, reserve your spot at events, and order food and drinks all from one beautifully designed app. Stay connected to upcoming programs, manage reservations, and access your membership with ease, wherever you are.
PSST Forum
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PSST Forum is the mobile companion for the Ministry of the Impossible community. Stay connected with your fellow ministers – on the go. - Browse and search topics across all categories - Read and reply to discussions with full rich text support - Start new conversations with the compose button - Get push notifications for replies, mentions, and messages - View member profiles and community activity - Like posts to show appreciation - See unread indicators so you never miss what's new PSST Forum *requires an existing account* on the Ministry of the Impossible community forum. This is a private community – new members join by invitation.
Screenshots
Verdict
SHACK15 and PSST Forum are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
SHACK15 ships an update every 2 weeks, PSST Forum every 3 weeks. The most recent releases landed on October 8, 2026 and September 19, 2026 respectively.
| Parameter | SHACK15 | PSST Forum |
|---|---|---|
| Price | Free | Free |
| Rating | 3.6 (11 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 11 — better | — |
| Update frequency | Every 2 weeks — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 52 MB | 33 MB |
| Age rating | 17+ | 12+ |
| Developer | SHACK15 LLC | Center for Artistic Activism, Inc. |
In-app purchases
SHACK15
No in-app purchases
PSST Forum
No in-app purchases
