Comparison

Sphere2 vs Catapult EMS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sphere2

This app transforms your iPad into a digital whiteboard, integrating live video from a wireless camera with lesson creation tools. Record and instantly upload lessons to the cloud for sharing with students or for review.

Highlights
  • Live video integration with wireless camera
  • Digital whiteboard for lesson creation
  • Annotation and drawing tools
  • Lesson recording
  • Cloud upload for recorded lessons
Features
Read full description

AVer Sphere2 App when used in conjunction with the AVer wireless camera is the first and only iPad digital whiteboard solution that integrates live video with lesson creation tools. You can even record Sphere2 lessons and upload them instantly to the cloud. When used without the camera, the App provides robust digital whiteboard functionalities for lesson creation and presentation. - Using AVer’s Wireless Cam stream live video of artifacts, experiments and more directly to the Sphere2 iPad App - Enhance the live video with notes, annotations, text, drawings and images to relay important aspects - Use the built-in whiteboard mode for step-by-step instructions and other content - With one click, record the entire lesson including video, annotation and other content - Automatically upload the recorded videos to the cloud (Dropbox®, YouTube®, Facebook®, Google Drive®, etc.) to send to absent students, substitute teachers or for review Visit averusa.com/education to learn more about Sphere2 as well as AVer’s other award-winning educational solutions.

About

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.

Highlights
  • 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
Features
Read full description

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.

Screenshots

Catapult EMS4 screens

Verdict

The call

The clearest difference is review sentiment: Sphere2 at 100% against Catapult EMS's 30%. Sphere2 also leads on rating (4.0 vs 2.6) and iOS requirement (9.3 vs 15.1). Catapult EMS's advantage is ratings volume (12 vs 1) and device support (3 vs 1). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Sphere2 holds the better App Store score, 4.0 against 2.6. That said, the two scores are not equally well evidenced: Catapult EMS has 12 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Sphere2's written reviews are positive against 30% of Catapult EMS's.

UpkeepUpdate frequency

Sphere2 ships an update every 2 months, Catapult EMS every 3 months. The most recent releases landed on October 8, 2026 and October 15, 2026 respectively.

Scorecard5 real differences · 5 level
Sphere2 versus Catapult EMS: the parameters behind the verdict, then further details
ParameterSphere2Catapult EMS
PriceFreeFree
Rating4.0 (1 ratings) — better2.6 (12 ratings)
Positive reviews100.0% of reviews — better30.0% of reviews
Number of ratings112 — better
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPadiPhone, iPad, iPod — better
Requires iOS9.3 — better15.1
Further details — not scored
Size36 MB35 MB
Age rating17+4+
DeveloperAVer Information Inc.Catapult K12

Customer experience

Sphere2

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Catapult EMS

All ratings12 ratings
Positive41.7%
Neutral0.0%
Negative58.3%
Written reviews10 reviews
Positive30.0%
Neutral0.0%
Negative70.0%

In-app purchases

None

Sphere2

No in-app purchases

None

Catapult EMS

No in-app purchases

Questions

Is Sphere2 free?
Sphere2 is free to download, with no in-app purchases.
Is Catapult EMS free?
Catapult EMS is free to download, with no in-app purchases.
Which has better reviews, Sphere2 or Catapult EMS?
Sphere2 is rated higher. Sphere2 averages 4.0 out of 5 from 1 ratings, while Catapult EMS averages 2.6 from 12 ratings.
Do Sphere2 or Catapult EMS have ads?
Neither Sphere2 nor Catapult EMS shows ads.
Which is updated more often, Sphere2 or Catapult EMS?
Sphere2 ships an update every 2 months, and Catapult EMS every 3 months. Most recently, Sphere2 was updated on October 8, 2026 and Catapult EMS on October 15, 2026.

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