# MERS eTextbook vs Gigo Super Sphere

The clearest difference is device support: Gigo Super Sphere at 3 against MERS eTextbook's 1. Gigo Super Sphere also leads on iOS requirement (10.0 vs 18.6). On price, update cadence, ads and in-app purchases there is nothing between them.

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

MERS eTextbook ships an update every 3 months, Gigo Super Sphere every 2 months. The most recent releases landed on October 23, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | MERS eTextbook | Gigo Super Sphere |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (3 ratings)](https://appshunter.io/ios/app/gigo-super-sphere/id1521620976/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 66 MB | 51 MB |
| Requires iOS | 18.6 | **10.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Modern Educational Research Society, LTD](https://appshunter.io/developer/432268704) | [GIGO TOYS CO., LTD.](https://appshunter.io/developer/650689065) |

## What reviewers say

### MERS eTextbook

[App page](https://appshunter.io/ios/app/mers-etextbook/id559730704)

This application allows students to download and access eTextbooks from their school. It provides interactive learning tools, multimedia content, and tracks user progress. Content is personalized based on user login and school affiliation.

**Highlights:** Downloadable eTextbooks, Personalized content by school, Interactive learning tools, Multimedia integration, Learning history tracking, Notifications for new content

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Gigo Super Sphere

[App page](https://appshunter.io/ios/app/gigo-super-sphere/id1521620976)

This app allows users to build and control a DIY rolling robot. It offers remote control and programming modes to interact with the robot's various models, requiring a physical Super Sphere package and Bluetooth connection.

**Highlights:** Build 7 different robot models, Remote control mode, Programming mode, Bluetooth connectivity, Roll, drive, and rotate robot functions

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MERS eTextbook free?

MERS eTextbook is free to download, with no in-app purchases.

### Is Gigo Super Sphere free?

Gigo Super Sphere is free to download, with no in-app purchases.

### Do MERS eTextbook or Gigo Super Sphere have ads?

Neither MERS eTextbook nor Gigo Super Sphere shows ads.

### Which is updated more often, MERS eTextbook or Gigo Super Sphere?

MERS eTextbook ships an update every 3 months, and Gigo Super Sphere every 2 months. Most recently, MERS eTextbook was updated on October 23, 2026 and Gigo Super Sphere on October 18, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*