# Sapphirus LearningChain vs BubbleBooks

The clearest difference is in-app purchases: Sapphirus LearningChain at none against BubbleBooks's 2. Sapphirus LearningChain also leads on iOS requirement (12.0 vs 16.1). BubbleBooks's advantage is update cadence (every 6 days vs every 3 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. BubbleBooks sells 2 in-app purchases, starting at $4.99 per month. Sapphirus LearningChain asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Sapphirus LearningChain against 5.0 for BubbleBooks. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Sapphirus LearningChain ships an update every 3 months, BubbleBooks every 6 days. The most recent releases landed on October 30, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Sapphirus LearningChain | BubbleBooks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/sapphirus-learningchain/id6451921662/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/bubblebooks-read-sing-paint/id6737719439/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 25 MB | 23 MB |
| Requires iOS | **12.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sapphirus Systems Pvt Ltd](https://appshunter.io/developer/1698669375) | [Neon Noise Lab](https://appshunter.io/developer/1490163055) |

## What reviewers say

### Sapphirus LearningChain

[App page](https://appshunter.io/ios/app/sapphirus-learningchain/id6451921662)

This app allows students to securely store their blockchain-based digital certificates in a personal wallet. Certificates can be easily shared on social networks or sent for verification using a simple QR code scan.

**Highlights:** Blockchain digital certificate storage, Personal certificate wallet, Social network sharing, Verification certificate sharing, QR code scanning for storage

**Features:** macOS Compatibility

**In-app purchases:** none


### BubbleBooks

[App page](https://appshunter.io/ios/app/bubblebooks-read-sing-paint/id6737719439)

This app offers an interactive learning experience for children, combining classic stories, music, and creative activities. It aims to foster reading skills and imagination through engaging narration, sing-along songs, and bubble-popping art. Kids can explore timeless tales and bring stories to life with interactive elements.

**Highlights:** Classic tales and nursery rhymes, Narration with highlighted text, Interactive sing-along songs, Bubble-popping painting activities, Interactive movie creation

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $44.99 | per year |


## Frequently asked questions

### Is Sapphirus LearningChain free?

Sapphirus LearningChain is free to download, with no in-app purchases.

### Is BubbleBooks free?

BubbleBooks is free to download, with in-app purchases available.

### Which has better reviews, Sapphirus LearningChain or BubbleBooks?

Sapphirus LearningChain and BubbleBooks are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Sapphirus LearningChain or BubbleBooks have ads?

Neither Sapphirus LearningChain nor BubbleBooks shows ads.

### Which is updated more often, Sapphirus LearningChain or BubbleBooks?

Sapphirus LearningChain ships an update every 3 months, and BubbleBooks every 6 days. Most recently, Sapphirus LearningChain was updated on October 30, 2026 and BubbleBooks on November 4, 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.*