# Parallel Books vs GlowWords

Parallel Books and GlowWords both sit at 5.0 stars, but that hides the real split: 100% of GlowWords's written reviews are positive against 40% of Parallel Books's. GlowWords also leads on update cadence (every 3 weeks vs every 3 months). Parallel Books's advantage is in-app purchases (none vs 5) and ads (none vs shown). On price, rating, ratings volume and device support there is nothing between them.

Both are free to download. GlowWords sells 4 in-app purchases, starting at $2.99 per month. Parallel Books asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Parallel Books against 5.0 for GlowWords. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 40% of Parallel Books's written reviews are positive against 100% of GlowWords's.

Parallel Books ships an update every 3 months, GlowWords every 3 weeks. The most recent releases landed on October 21, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Parallel Books | GlowWords |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/parallel-books/id1045596664/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/glowwords/id6755664722/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 40.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 82 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | +12 |
| Developer | [High Tea IT Limited](https://appshunter.io/developer/1045596663) | [Viktorya Hovhannisyan](https://appshunter.io/developer/1855383837) |

## What reviewers say

### Parallel Books

[App page](https://appshunter.io/ios/app/parallel-books/id1045596664)

Learn a new language by reading books with side-by-side translations. This app keeps translations synchronized as you read, allowing for full immersion. Easily switch between display modes and add notes for a personalized learning experience.

**Highlights:** Dual language display, Synchronized translations, Adjustable display modes, Searchable notes, Day/night themes, Highlighting

**Features:** macOS Compatibility

**In-app purchases:** none


### GlowWords

[App page](https://appshunter.io/ios/app/glowwords/id6755664722)

This app helps you learn languages by reading books. It offers AI-powered translation, flashcards, and exercises based on the words you encounter. Import your own EPUBs and track your progress to build vocabulary naturally.

**Highlights:** AI-powered translation for EPUB books, Flashcards and smart vocabulary exercises, AI Coach for contextual explanations, Import your own EPUB e-books, Personal goals and progress tracking, Offline reading and practice, Support for over 100 languages

**Features:** Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GlowWords Plus | $2.99 | per month |
| GlowWords Plus | $2.99 | per month |
| GlowWords Plus – 3 months | $5.99 | per 3 months |
| GlowWords Plus Yearly | $17.99 | per year |


## Frequently asked questions

### Is Parallel Books free?

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

### Is GlowWords free?

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

### Which has better reviews, Parallel Books or GlowWords?

Parallel Books and GlowWords are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Parallel Books or GlowWords have ads?

GlowWords shows ads; Parallel Books does not.

### Which is updated more often, Parallel Books or GlowWords?

Parallel Books ships an update every 3 months, and GlowWords every 3 weeks. Most recently, Parallel Books was updated on October 21, 2026 and GlowWords on October 31, 2026.

---

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