# Serious Solids vs Macmillan Learning eBook

The clearest difference is review sentiment: Serious Solids at 100% against Macmillan Learning eBook's 11%. Serious Solids also leads on iOS requirement (12.0 vs 17.6). Macmillan Learning eBook's advantage is rating (4.3 vs 2.7) and update cadence (every 3 months vs every 48 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Macmillan Learning eBook holds the better App Store score, 4.3 against 2.7. That said, the two scores are not equally well evidenced: Macmillan Learning eBook has 2.2K ratings behind it against 7, so its average is the more settled of the two. Written reviews complicate that: 100% of Serious Solids's written reviews are positive against 11% of Macmillan Learning eBook's, so the app with the better star average is not the one people write more warmly about.

Serious Solids ships an update every 48 months, Macmillan Learning eBook every 3 months. The most recent releases landed on October 6, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Serious Solids | Macmillan Learning eBook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (7 ratings)](https://appshunter.io/ios/app/serious-solids/id992220810/reviews) | **[4.3 (2.2K ratings)](https://appshunter.io/ios/app/macmillan-learning-ebook/id1250170591/reviews)** |
| Number of ratings | 7 | **2.2K** |
| Positive reviews | **100.0% of reviews** | 11.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 48 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 52 MB | 183 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cheryl Montgomery](https://appshunter.io/developer/611176285) | [HPHLP](https://appshunter.io/developer/395949292) |

## What reviewers say

### Serious Solids

[App page](https://appshunter.io/ios/app/serious-solids/id992220810)

This educational game challenges players to identify the correct combinations of cations and anions to form solid precipitates. It's designed to help users learn to predict the products of common precipitation reactions through interactive experimentation.

**Highlights:** Predict precipitation reactions, Combine cations and anions, Form solid precipitates, Experiment with ion symbols, Earn points by swiping spectator ions

**Features:** macOS Compatibility

**In-app purchases:** none


### Macmillan Learning eBook

[App page](https://appshunter.io/ios/app/macmillan-learning-ebook/id1250170591)

Access and study digital textbooks on your iPad or iPhone with a comprehensive, digital-first experience. Download books for offline reading, customize your study tools with notes and flashcards, and personalize the reading environment for easier learning.

**Highlights:** Offline reading, Note-taking and highlighting, Flashcard creation, Customizable reading settings, Read Aloud feature, Cross-device syncing, Accessibility features

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 📚 Easy access to textbooks
- 🔊 Useful read-aloud feature
- 💻 Works well on desktop

**What reviewers complain about**

- 🔑 Login issues across devices
- 🐛 Buggy and unstable app
- 💾 Disappearing or lost content
- 🔍 Poor search and navigation
- 📝 Limited annotation and note-taking

**Reported bugs**

- Login credentials not recognized
- Frequent app crashes
- Textbooks disappearing from library

**Requested features**

- Integrate with popular reading apps
- Improve annotation and note-taking tools
- Provide a universal e-reader option


## Frequently asked questions

### Is Serious Solids free?

Serious Solids is free to download, with no in-app purchases.

### Is Macmillan Learning eBook free?

Macmillan Learning eBook is free to download, with no in-app purchases.

### Which has better reviews, Serious Solids or Macmillan Learning eBook?

Macmillan Learning eBook is rated higher. Serious Solids averages 2.7 out of 5 from 7 ratings, while Macmillan Learning eBook averages 4.3 from 2.2K ratings.

### Do Serious Solids or Macmillan Learning eBook have ads?

Neither Serious Solids nor Macmillan Learning eBook shows ads.

### Which is updated more often, Serious Solids or Macmillan Learning eBook?

Serious Solids ships an update every 48 months, and Macmillan Learning eBook every 3 months. Most recently, Serious Solids was updated on October 6, 2026 and Macmillan Learning eBook on October 19, 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.*