# Glassboxx vs Tandem

The clearest difference is review sentiment: Tandem at 100% against Glassboxx's 28%. Glassboxx's advantage is in-app purchases (none vs 9). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Tandem sells 7 in-app purchases, starting at $1.99 per year. Glassboxx asks for nothing beyond the download.

Glassboxx ships an update every 6 weeks, Tandem monthly. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Glassboxx | Tandem |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (76 ratings)](https://appshunter.io/ios/app/glassboxx/id1464705712/reviews)** | — |
| Number of ratings | **76** | — |
| Positive reviews | 27.8% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 35 MB | 104 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Glassboxx Limited](https://appshunter.io/developer/1547970169) | [Early ideas Limited](https://appshunter.io/developer/1705671268) |

## What reviewers say

### Glassboxx

[App page](https://appshunter.io/ios/app/glassboxx/id1464705712)

Access your purchased eBooks and audiobooks from affiliated stores in one secure app. No passwords needed, just your email and a verification code. Enjoy offline reading and listening with advanced playback and reading features.

**Highlights:** Unified eBook and audiobook library, No password login, Offline reading and listening, Auto-save reading/listening position, Customizable reader (font, background), Audio playback controls (sleep timer, skip), Full text search

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

**In-app purchases:** none

**What reviewers like**

- ✨ Streamlined and elegant reading app
- 👍 User-friendly interface
- 💡 Font size customization
- 💡 Background customization
- 👍 Seamless transaction

**What reviewers complain about**

- 🐛 Frequent crashes
- 🐛 Books not downloading
- 🐛 Verification code issues
- 🐛 Poor customer support response
- 🐛 Unusable app experience

**Reported bugs**

- App crashes on startup
- App crashes when loading downloaded book
- App crashes between chapters
- App freezes
- App won't open

**Requested features**

- Bookmark feature
- See time remaining in entire audiobook
- Pagination via cursor keys on iPad Magic Keyboard
- Dark mode option
- Advanced analytics dashboard


### Tandem

[App page](https://appshunter.io/ios/app/tandem/id6464282026)

Create personalized stories, fact books, and activity ideas for children. Enhance vocabulary, comprehension, and curiosity with playful prompts and expert parent tips. Designed for co-reading and shared discovery to foster bonding and learning.

**Highlights:** Personalized stories, fact books, and activity ideas, Comprehension prompts that feel like play, Gentle parent tips to enrich time together, Beautiful illustrations and engaging text, Private, secure, and easy to use

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited plan (annual) | $1.99 | per year |
| Unlimited plan (monthly) | $2.99 | per month |
| Starter plan (monthly) | $2.99 | per month |
| Unlimited plan (annual) | $29.99 | per year |
| Starter plan (annual) | $29.99 | per year |
| Unlimited Lifetime Access | $1.99 | one-time |
| Unlimited Lifetime Access | $3.99 | one-time |


## Frequently asked questions

### Is Glassboxx free?

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

### Is Tandem free?

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

### Do Glassboxx or Tandem have ads?

Neither Glassboxx nor Tandem shows ads.

### Which is updated more often, Glassboxx or Tandem?

Glassboxx ships an update every 6 weeks, and Tandem monthly. Most recently, Glassboxx was updated on October 29, 2026 and Tandem on October 27, 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.*