Comparison

Merge Object Viewer vs Balloon Drop AR

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

Head to head
About

Merge Object Viewer

Explore hundreds of 3D digital teaching aids with this app. Students can interact with models of rocks, mammals, cells, and more. The app also allows users to upload and view their own 3D objects on a compatible device.

Highlights
  • Hundreds of 3D teaching aids
  • Interactive 3D models
  • Learn about science and biology
  • Upload and view custom 3D objects
  • Hands-on digital learning
Features
Read full description

PLEASE NOTE: This app requires a Merge Cube and a smartphone or a tablet to play. To find out how to get a Merge Cube and to learn more, visit our website at: https://www.MergeCube.com. Object Viewer puts hundreds of digital teaching aids in the palm of your hand! Students can learn about rocks and minerals, mammals, reptiles, lifecycles, cells, and so much more using different collections of hands-on 3D models. Students can also upload, view, and share their own 3D objects on the Merge Cube. If you have any questions or suggestions, we would love to hear from you! Contact us at any time at support@MergeEdu.com. Privacy Policy: https://MergeEdu.com/privacy-policy Terms of Use: https://MergeEdu.com/terms-of-use

About

Balloon Drop AR

Features
Read full description

Balloon Math turns math practice into a fast, addictive survival game. A balloon slowly drifts toward the ground — the only way to keep it airborne is to solve math problems. Every correct answer bounces it back up. Answer 10 correctly before the balloon touches down 3 times to clear each level. It's built to grow with the player: gentle enough for a young beginner learning to add, and deep enough to challenge an adult all the way to trigonometry. Features: • Simple, engaging gameplay — Solve multiple-choice problems to bounce your balloon up. Wrong answers never cost a life, so kids stay encouraged. • 10 starter levels across three tiers — Balloon Beginner, Quick Thinker, and Math Climber — with difficulty that rises gradually so it never spikes. • The Summit Journey — A 28-summit campaign, each teaching one new concept: addition, subtraction, multiplication, division, order of operations, fractions, decimals, percentages, negatives, exponents, square roots, algebra, geometry, coordinate planes, and trigonometry, differential equations, limits, calculus • Fresh challenges over time — New gameplay mechanics unlock as you climb: extra answer choices, golden bonus balloons, wind, combo streaks, and a final boss level. • Master Academy — 8 optional extreme lessons for players who conquer every summit. • Skip the basics — A quick placement test lets confident players and adults jump straight to their level. • Rewards & progression — Earn coins, collect balloon colors and backgrounds, unlock badges, and track achievements. • Detailed stats — See lifetime questions answered, balloons saved, longest streak, fastest level, accuracy, and play time. • Plays fully offline — All progress is saved on your device. No account, no internet, no ads. Perfect for kids building math confidence, students sharpening skills, and adults keeping their mental math sharp.

Screenshots

Merge Object Viewer4 screens
Balloon Drop AR4 screens

Verdict

The call

The clearest difference is in-app purchases: Balloon Drop AR at none against Merge Object Viewer's 4. Balloon Drop AR also leads on update cadence (every 4 days vs monthly). On price, ads, device support and iOS requirement 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. Merge Object Viewer sells 4 in-app purchases, starting at $9.99 per month. Balloon Drop AR asks for nothing beyond the download.

UpkeepUpdate frequency

Merge Object Viewer ships an update monthly, Balloon Drop AR every 4 days. The most recent releases landed on October 22, 2026 and October 14, 2026 respectively.

Scorecard2 real differences · 8 level
Merge Object Viewer versus Balloon Drop AR: the parameters behind the verdict, then further details
ParameterMerge Object ViewerBalloon Drop AR
PriceFreeFree
Rating4.5 (389 ratings) — better—
Positive reviews47.6% of reviews—
Number of ratings389 — better—
Update frequencyMonthlyEvery 4 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size414 MB57 MB
Age rating4+4+
DeveloperMerge AppsErrold Jeffrey

Bugs and requests

Merge Object Viewer

Reported bugs

4 issues
  • Objects not loading or displaying incorrectly
  • App freezing or closing unexpectedly
  • Labeling/annotation issues with 3D objects
  • Compatibility problems on iPads and older iOS versions

Requested features

5 requests
  • Adjustable lighting for 3D objects
  • Ability to snap objects together
  • Camera button for capturing scenes
  • Restore VR support
  • More free 3D content options

Balloon Drop AR

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Merge Object Viewer

Subscriptions4
  • Object Viewer Premium Monthly14 Days trial$9.991 Month
  • Merge EDU Individual14 Days trial$9.991 Month
  • Object Viewer Premium Annual14 Days trial$99.991 Year
Show 1 more
  • Merge EDU Individual14 Days trial$99.991 Year
None

Balloon Drop AR

No in-app purchases

Questions

Is Merge Object Viewer free?
Merge Object Viewer is free to download, with in-app purchases available.
Is Balloon Drop AR free?
Balloon Drop AR is free to download, with no in-app purchases.
Do Merge Object Viewer or Balloon Drop AR have ads?
Neither Merge Object Viewer nor Balloon Drop AR shows ads.
Which is updated more often, Merge Object Viewer or Balloon Drop AR?
Merge Object Viewer ships an update monthly, and Balloon Drop AR every 4 days. Most recently, Merge Object Viewer was updated on October 22, 2026 and Balloon Drop AR on October 14, 2026.

Other comparisons