Catapult EMS vs AirSync Sender
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Catapult EMS
Stay informed during emergencies with audible alerts that bypass silent mode. This app provides quick access to emergency procedures, allows for secure login via biometrics, and integrates with a comprehensive emergency management system for organizations.
- Audible emergency alerts on silent mode
- Quick home screen access
- Touch/Face ID login
- Location and status gathering
- One-on-one emergency conversations
- Alert districts, police, and fire
- View emergency procedures
- Anonymous threat reporting
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Never miss another emergency alert: The CatapultEMS app plays audible emergency alerts even when your phone is on silent. It works with WiFi or cell data. Quick and easy: Add the icon to your home screen so you have quick access in an emergency. No more passwords: Set up touch or face id, so you don’t have to worry about usernames, passwords and extra button presses. --- This app works with CatapultEMS, a complete emergency management system for organizations and schools. Staff and student safety is our prime concern. Use CatapultEMS to • Gather locations of students, staff, and their statuses in an emergency. • Have one-on-one emergency conversations. • Alert districts, police, and fire. • View up-to-date emergency procedures. • Receive anonymous reports of threats. If your organization does not use CatapultEMS, contact sales@catapultems.com for a quote.
AirSync Sender
Wirelessly share your device's screen to compatible interactive displays or multiple iOS devices. Facilitates efficient multi-person communication and collaboration through features like split screen and annotation.
- WebRTC screen sharing
- QR code sharing
- Split screen support
- Moderator mode
- Remote control
- Annotation
- Screen mirroring
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AirSync Sender is a screen sharing app specially designed for AirSync. With AirSync Sender, you can easily share your screen to AirSync devices, such as the ViewSonic ViewBoard interactive flat panel. Whether connected through the Internet or a local area network, you can use AirSync Sender to share your ideas wirelessly and create a more efficient multi-person communication environment. You can also share AirSync device screen to multiple iOS devices through AirSync sender. The main functions of AirSync Sender include: 1. Screen sharing based on WebRTC technology 2. Sharing screen through QR code 3. Split screen to support multiple sharing screens 4. Support moderator mode 5. Receive device side screen and remote control 6. Annotation 7. Screen mirroring Quick screen sharing guide: 1. Launch the AirSync application on the receiving side 2. Launch the AirSync Sender 3. Enter the display code and one-time password 4. After pressing "Next", and click "Start broadcast" System requirements: 1. iOS 11 or above 2. LAN or WAN connection required
Screenshots
Verdict
The clearest difference is rating: Catapult EMS at 2.6 against AirSync Sender's 1.8. AirSync Sender's advantage is review sentiment (50% vs 30%) and update cadence (monthly vs every 3 months). On price, ratings volume, 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.
Catapult EMS holds the better App Store score, 2.6 against 1.8. Both are backed by a comparable volume of ratings — 12 and 5 respectively. Written reviews complicate that: 30% of Catapult EMS's written reviews are positive against 50% of AirSync Sender's, so the app with the better star average is not the one people write more warmly about.
Catapult EMS ships an update every 3 months, AirSync Sender monthly. The most recent releases landed on September 10, 2026 and September 17, 2026 respectively.
| Parameter | Catapult EMS | AirSync Sender |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (12 ratings) — better | 1.8 (5 ratings) |
| Positive reviews | 30.0% of reviews | 50.0% of reviews — better |
| Number of ratings | 12 — better | 5 |
| Update frequency | Every 3 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 15.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 35 MB | 82 MB |
| Age rating | 4+ | 4+ |
| Developer | Diverse Network Associates Incorporated | ViewSonic_International |
Customer experience
Catapult EMS
AirSync Sender
In-app purchases
Catapult EMS
No in-app purchases
AirSync Sender
No in-app purchases
Questions
Is Catapult EMS free?
Is AirSync Sender free?
Which has better reviews, Catapult EMS or AirSync Sender?
Do Catapult EMS or AirSync Sender have ads?
Which is updated more often, Catapult EMS or AirSync Sender?
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