Green Security Gatekeeper vs MSD Event Space
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Green Security Gatekeeper
This app streamlines vendor and contractor management. It allows for efficient scanning and tracking of individuals entering a facility. Simplify your access control processes.
- Vendor scanning
- Contractor management
- Access control
- Facility entry tracking
- Streamlined processes
Read full descriptionHide full description
Gatekeeper is a vendor and contractor scanning solution provided by Green Security.
MSD Event Space
Enhance event experiences for attendees with personalized journeys, interactive engagement tools, and networking opportunities. Facilitate connections and gather insights through features like custom event pages, targeted polls, and participant matching.
- Personalized event pages
- Timely notifications
- Session search and theming
- Participant matching
- Built-in video calls
- Interactive polls and Q&A
Read full descriptionHide full description
Facilitate relationships, drive outcomes, maximize your hybrid and in-person events with MSD Event Space. Provide a memorable experience Deliver a personalized experience every step of the way. Build customized event pages (complete with trip summary and FAQs), send timely notifications including travel times. Help your audience search for their sessions by using tags and building out themes. Limit sessions to specific audience members, like execs or VIPs, and send out personalized agenda recommendations. Help attendees make connections at your event. Participant matching can help attendees find people they should get to know and enable them easily meet in-person or with built-in video calls. Give your audience a voice Build excitement before the event and break the ice during your event with polls, quizzes, word clouds, and Q&A’s your audience will love. Provide participants a personalized experience with targeted polls. Gain detailed insights from individual attendees.
Screenshots
Verdict
The clearest difference is rating: MSD Event Space at 5.0 against Green Security Gatekeeper's 1.9. Green Security Gatekeeper's advantage is ratings volume (13 vs 1) and iOS requirement (11.1 vs 17.0). On price, update cadence, ads and in-app purchases 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.
MSD Event Space holds the better App Store score, 5.0 against 1.9. That said, the two scores are not equally well evidenced: Green Security Gatekeeper has 13 ratings behind it against 1, so its average is the more settled of the two.
Green Security Gatekeeper ships an update every 6 weeks, MSD Event Space every 5 weeks. The most recent releases landed on July 7, 2026 and September 27, 2026 respectively.
| Parameter | Green Security Gatekeeper | MSD Event Space |
|---|---|---|
| Price | Free | Free |
| Rating | 1.9 (13 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 20.0% of reviews | — |
| Number of ratings | 13 — better | 1 |
| Update frequency | Every 6 weeks | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 11.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 2 MB | 55 MB |
| Age rating | 4+ | 17+ |
| Developer | Green Security LLC | Merck Sharp & Dohme LLC |
Customer experience
Green Security Gatekeeper
MSD Event Space
In-app purchases
Green Security Gatekeeper
No in-app purchases
MSD Event Space
No in-app purchases
Questions
Is Green Security Gatekeeper free?
Is MSD Event Space free?
Which has better reviews, Green Security Gatekeeper or MSD Event Space?
Do Green Security Gatekeeper or MSD Event Space have ads?
Which is updated more often, Green Security Gatekeeper or MSD Event Space?
Other comparisons
