# Spanish Dictionary + vs Parallel Books

The clearest difference is in-app purchases: Parallel Books at none against Spanish Dictionary +'s 5. Parallel Books also leads on ads (none vs shown) and iOS requirement (15.6 vs 17.6). Spanish Dictionary +'s advantage is review sentiment (69% vs 40%) and update cadence (every 2 months vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Spanish Dictionary + sells 5 one-off in-app purchases. Parallel Books asks for nothing beyond the download.

Spanish Dictionary + ships an update every 2 months, Parallel Books every 3 months. The most recent releases landed on September 25, 2026 and August 28, 2026 respectively.

## The numbers

| Metric | Spanish Dictionary + | Parallel Books |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.9K ratings)](https://appshunter.io/ios/app/spanish-dictionary-plus/id400367302/reviews)** | — |
| Number of ratings | **1.9K** | — |
| Positive reviews | **69.4% of reviews** | 40.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 39 MB | 2 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [iThinkdiff](https://appshunter.io/developer/377715733) | [High Tea IT Limited](https://appshunter.io/developer/1045596663) |

## What reviewers say

### Spanish Dictionary +

[App page](https://appshunter.io/ios/app/spanish-dictionary-plus/id400367302)

This app provides a comprehensive bilingual dictionary and translator for English and Spanish. It offers offline access to over 350,000 words and phrases, along with pronunciation, text scanning, and vocabulary-building games. Ideal for students, travelers, and language enthusiasts looking to improve their skills.

**Highlights:** Bilingual English-Spanish dictionary, Offline translation for words and phrases, Text scanning via camera, Vocabulary games and flashcards, Offline pronunciation, Thesaurus, synonyms, and antonyms

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spanish English Dictionary Offline Pronunciation | $0.99 | one-time |
| Spanish English Dictionary Online English Spanish Translation | $0.99 | one-time |
| Spanish English Dictionary Flash Card Word Learning | $0.99 | one-time |
| Spanish English Dictionary Travel Phrase Book | $0.99 | one-time |
| Unlock Full Version | $9.99 | one-time |

**What reviewers like**

- 👍 Helpful for learning verbs
- 👍 Useful for quick translations
- 👍 Excellent Spanish-English dictionary
- 👍 Convenient to have on the go
- 👍 Improves Spanish language skills

**What reviewers complain about**

- 🐛 Occasional inaccurate translations
- 🐛 Lack of gender identification for nouns
- 🐛 Intrusive ads and in-app purchases
- 🐛 Slow and unresponsive at times
- 🐛 Limited vocabulary compared to physical dictionaries

**Reported bugs**

- Crashes on launch for some users
- Difficulty finding the search function
- Inconsistent behavior when switching between English and Spanish

**Requested features**

- Audio pronunciations for words
- More comprehensive vocabulary coverage
- Inclusion of common phrases and idioms
- Verb conjugation information
- Ability to toggle off 'Word of the Day' feature


### 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


## Frequently asked questions

### Is Spanish Dictionary + free?

Spanish Dictionary + is free to download, with in-app purchases available.

### Is Parallel Books free?

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

### Do Spanish Dictionary + or Parallel Books have ads?

Spanish Dictionary + shows ads; Parallel Books does not.

### Which is updated more often, Spanish Dictionary + or Parallel Books?

Spanish Dictionary + ships an update every 2 months, and Parallel Books every 3 months. Most recently, Spanish Dictionary + was updated on September 25, 2026 and Parallel Books on August 28, 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.*