# NASPA Zyzzyva Mobile vs Word Zero

The clearest difference is review sentiment: Word Zero at 69% against NASPA Zyzzyva Mobile's 22%. Word Zero also leads on rating (4.3 vs 3.1) and update cadence (every 2 weeks vs every 5 months). NASPA Zyzzyva Mobile's advantage is in-app purchases (none vs 2) and iOS requirement (14.0 vs 16.4). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Word Zero sells 1 one-off in-app purchase. NASPA Zyzzyva Mobile asks for nothing beyond the download.

Word Zero holds the better App Store score, 4.3 against 3.1. Both are backed by a comparable volume of ratings — 12 and 20 respectively. Written reviews point the same way: 22% of NASPA Zyzzyva Mobile's written reviews are positive against 69% of Word Zero's.

NASPA Zyzzyva Mobile ships an update every 5 months, Word Zero every 2 weeks. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | NASPA Zyzzyva Mobile | Word Zero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (12 ratings)](https://appshunter.io/ios/app/naspa-zyzzyva-mobile/id1587435725/reviews) | **[4.3 (20 ratings)](https://appshunter.io/ios/app/word-zero/id6463043123/reviews)** |
| Number of ratings | 12 | **20** |
| Positive reviews | 22.2% of reviews | **69.2% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 70 MB | 64 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 9+ |
| Developer | [North American SCRABBLE Players Association](https://appshunter.io/developer/902398527) | [SourceGear](https://appshunter.io/developer/550525064) |

## What reviewers say

### NASPA Zyzzyva Mobile

[App page](https://appshunter.io/ios/app/naspa-zyzzyva-mobile/id1587435725)

This app is designed for word game enthusiasts to conduct in-depth word study. It features simplified search, quiz functions, and Leitner cardbox study, useful for both personal practice and tournament adjudication. Data synchronization across devices is available via Dropbox.

**Highlights:** Word study tools, Quiz functions, Leitner cardbox study, Adjudication for clubs/tournaments, Dropbox data synchronization

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

**In-app purchases:** none


### Word Zero

[App page](https://appshunter.io/ios/app/word-zero/id6463043123)

A digital crossword board game where two players form words using letter tiles. It focuses on a pure gameplay experience without ads, rewards, or in-game assistance. Players use tokens to start games, with options to earn or purchase more.

**Highlights:** Two-player turn-based word formation, Token system for game access, No ads or in-game rewards, Correspondence-style games with turn timers, Play against computer bots, Elo rating system, English and Spanish language support

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 50 Game Tokens | $4.99 | one-time |


## Frequently asked questions

### Is NASPA Zyzzyva Mobile free?

NASPA Zyzzyva Mobile is free to download, with no in-app purchases.

### Is Word Zero free?

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

### Which has better reviews, NASPA Zyzzyva Mobile or Word Zero?

Word Zero is rated higher. NASPA Zyzzyva Mobile averages 3.1 out of 5 from 12 ratings, while Word Zero averages 4.3 from 20 ratings.

### Do NASPA Zyzzyva Mobile or Word Zero have ads?

Neither NASPA Zyzzyva Mobile nor Word Zero shows ads.

### Which is updated more often, NASPA Zyzzyva Mobile or Word Zero?

NASPA Zyzzyva Mobile ships an update every 5 months, and Word Zero every 2 weeks. Most recently, NASPA Zyzzyva Mobile was updated on October 30, 2026 and Word Zero on October 24, 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.*