Comparison

Sphere2 vs Promethean

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

Promethean

This app facilitates classroom collaboration by allowing students and teachers to interact with interactive panels wirelessly. IT administrators can also manage panel enrollment and updates. It offers screen sharing and access to training resources.

Highlights
  • Wireless screen sharing
  • Panel management for IT admins
  • Access to training materials
  • Student-teacher interaction
  • Panel enrollment and naming
Features
Read full description

Put classroom collaboration into the hands of students and teachers and panel management into the hands of school IT administrators. The Promethean mobile app is designed for teachers and students to interact with Promethean ActivPanels from anywhere in the classroom. Teachers have the ability to sign in and access their Promethean profile. For IT administrators, the Promethean mobile app helps to enroll ActivPanels into their panel management to make updates easier. Students can • Wirelessly share the screen from their mobile device to ActivPanels with Screen Share or Screen Share in Promethean ActivSuite. • No sign-in required. Teachers can • Wirelessly share the screen from their mobile device to ActivPanels with Screen Share or Screen Share in Promethean ActivSuite. • Access Promethean user tutorials and training materials on Learn Promethean directly through the app.* • Sign in to their Promethean account to access Promethean ActivSuite and sign in to their ActivPanel 9. IT Administrators can • Sign in to their Promethean account. • Wirelessly share the screen from their mobile device to ActivPanels with Screen Share or Screen Share in Promethean ActivSuite. • Access Promethean user tutorials and training materials on Learn Promethean directly through the app* • Enroll ActivPanels into a school organization, name the panel, associate it with groups and verify that it was enrolled successfully. NOTES: • The Promethean app requires a device where a Promethean account can be accessed or Promethean ActivPanel Elements (Nickel, Cobalt, Titanium) series panels with Software Release (SR) 3.2 or newer. • Panel sign in is only available for ActivPanel 9 series. • Screen Share must be enabled on ActivPanel to utilize Screen Share from the Promethean app. * Dependent upon language"

Screenshots

Promethean4 screens

Verdict

The call

The clearest difference is review sentiment: Sphere2 at 100% against Promethean's 18%. Sphere2 also leads on rating (4.0 vs 2.5) and iOS requirement (9.3 vs 15.0). Promethean's advantage is ratings volume (59 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 2.5. That said, the two scores are not equally well evidenced: Promethean has 59 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 18% of Promethean's.

UpkeepUpdate frequency

Sphere2 ships an update every 2 months, Promethean every 4 months. The most recent releases landed on June 11, 2026 and September 30, 2026 respectively.

Scorecard5 real differences · 5 level
Sphere2 versus Promethean: the parameters behind the verdict, then further details
ParameterSphere2Promethean
PriceFreeFree
Rating4.0 (1 ratings) — better2.5 (59 ratings)
Positive reviews100.0% of reviews — better17.6% of reviews
Number of ratings159 — better
Update frequencyEvery 2 months — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPadiPhone, iPad, iPod — better
Requires iOS9.3 — better15.0
Further details — not scored
Size36 MB66 MB
Age rating17+4+
DeveloperAVer Information Inc.Promethean

Customer experience

Sphere2

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

Promethean

All ratings59 ratings
Positive33.9%
Neutral8.5%
Negative57.6%
Written reviews34 reviews
Positive17.6%
Neutral2.9%
Negative79.4%

In-app purchases

None

Sphere2

No in-app purchases

None

Promethean

No in-app purchases

Questions

Is Sphere2 free?
Sphere2 is free to download, with no in-app purchases.
Is Promethean free?
Promethean is free to download, with no in-app purchases.
Which has better reviews, Sphere2 or Promethean?
Sphere2 is rated higher. Sphere2 averages 4.0 out of 5 from 1 ratings, while Promethean averages 2.5 from 59 ratings.
Do Sphere2 or Promethean have ads?
Neither Sphere2 nor Promethean shows ads.
Which is updated more often, Sphere2 or Promethean?
Sphere2 ships an update every 2 months, and Promethean every 4 months. Most recently, Sphere2 was updated on June 11, 2026 and Promethean on September 30, 2026.

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