Muster vs BlackBox Memories
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Muster
Easily plan informal get-togethers with friends. Quickly create events, invite attendees, and track responses without needing emails or social media logins. Share photos, videos, and get weather updates for your gatherings.
- Quick event creation
- Attendance tracking
- Invitee groups
- Event messaging
- Photo and video sharing
- Weather forecasts
- In-app messaging integration
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Quickly plan informal events with your friends and find out who's in and who's out. No need for emails, social media logins, or clunky text messaging when you can quickly create an event, invite friends, and get notified of their attendance, even "plus one's." It's just enough for quick get-togethers and nothing more! Create an event by simply answering who, what, when, and where, and receive notifications as invitees respond in or out. Organize friends into invitee groups for quicker event creation, communicate with invitees using event messages, share photos and videos from the event, even get the weather forecast of upcoming events. Perfect for girl's night, sports roll call, and any other "ad hoc" social event where you just need to know who's attending with as little hassle as possible. Want to send a formal invitation on frilly stationery with an RSVP? Well this app isn't for you! But it's perfect if you just want a quick and easy way to get together. Can't bear the thought of doing anything outside of text messaging? We've got you covered...just use Muster inside Messages to create and respond to events for a conversation. Muster Premium: Subscribe to Muster Premium to help support the app, suppress ads, and get increased media storage limits. If you choose to subscribe to Muster Premium, payment will be charged to your iTunes account, and your account will be charged for renewal 24 hours prior to the end of the current period. Auto-renewal may be turned off at any time by going to your settings in the iTunes Store after purchase. The current price for Muster Premium is $0.99 USD monthly or $9.99 USD annually, and may vary from country to country. Terms of Use: https://muster.io/termsofuse.html Privacy Policy: https://muster.io/privacypolicy.html
BlackBox Memories
Capture and privately share life's stories and meaningful experiences. This app allows you to document moments with text, photos, videos, and audio, with flexible sharing options. It's designed for those who value authentic connection and personal reflection.
- Privacy-first memory capture
- End-to-end encryption
- User-controlled sharing
- Map & Timeline organization
- Flexible content formats (text, photo, video, audio)
- Early tester community
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Memories fade if we don’t pin them down. That’s why we built BlackBox—a privacy-first memory app that prioritizes genuine connection and the sharing of meaningful stories and experiences. If that sounds good, Blackbox is the app for you. Our app is all about authentic connection and documenting the stories and life events that matter to you. Whether you want to build your memories with a select group of friends or keep them fully private for your own reflection, Blackbox gives you the control and flexibility to share as much or as little as you'd like. It's for people who want to capture life’s stories (big or small) without broadcasting every moment. Whether you’re uploading travel photos, jotting down random inside jokes from 20 years ago, or journaling your child’s first steps, you decide who sees each memory. Private First: End-to-end encryption and user-controlled sharing. If you don’t invite someone, they won’t even know the memory exists. Map & Timeline: Pin memories to exact times and locations or keep it vague. (you can drop a marker on your childhood backyard, or just a city or country you visited, You can only a vague year, or the exact dates) Flexible Formats: Text, links, photos, videos, audio—whatever helps you remember that moment best. It’s a Little Rough: We’re still shaping BlackBox, so are looking for early testers get to help guide the vision. See something that feels off, or just doesn't work? Call trash on it. We want honest feedback. If you’re into journaling, scrapbooking, or just collecting life’s highlights on your own terms, come test BlackBox. This is your chance to influence our direction, refine the experience, and decide if a “digital legacy” is something you'd find meaningful. Ready to build a private Memory Map of your life? Download BlackBox and join our early community of testers! We’re excited to see what you think. Thank you
Screenshots
Verdict
The clearest difference is in-app purchases: BlackBox Memories at none against Muster's 2. BlackBox Memories also leads on update cadence (weekly vs every 2 months) and iOS requirement (13.4 vs 17.6). Muster's advantage is ratings volume (39 vs 3). On price, rating, 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. Muster sells 2 in-app purchases, starting at $0.99 per month. BlackBox Memories asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.9 for Muster against 5.0 for BlackBox Memories. That said, the two scores are not equally well evidenced: Muster has 39 ratings behind it against 3, so its average is the more settled of the two.
Muster ships an update every 2 months, BlackBox Memories weekly. The most recent releases landed on October 19, 2026 and October 15, 2026 respectively.
| Parameter | Muster | BlackBox Memories |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (39 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 39 — better | 3 |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Free — better |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 17.6 | 13.4 — better |
| Further details — not scored | ||
| Size | 50 MB | 70 MB |
| Age rating | 4+ | 4+ |
| Developer | Stalefish Labs | Peter Fasula |
Customer experience
Muster
BlackBox Memories
In-app purchases
Muster
- 1-Month Premium Subscription$0.991 Month
- 1-Year Premium Subscription$9.991 Year
BlackBox Memories
No in-app purchases








