# ZKReg vs Spanish Dictionary & Thesaurus

The clearest difference is price: Spanish Dictionary & Thesaurus at Free against ZKReg's $5.99. ZKReg's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence, device support and iOS requirement there is nothing between them.

Spanish Dictionary & Thesaurus is free to download; ZKReg costs $5.99 up front. Spanish Dictionary & Thesaurus sells 1 one-off in-app purchase. ZKReg asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 16 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | ZKReg | Spanish Dictionary & Thesaurus |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | — | **[4.5 (212 ratings)](https://appshunter.io/ios/app/spanish-dictionary-and-thesaurus/id1024764800/reviews)** |
| Number of ratings | — | **212** |
| Positive reviews | **100.0% of reviews** | 68.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 16 months | Every 16 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 6 MB | 47 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Soul of Australia Pty Ltd](https://appshunter.io/developer/1476186849) | [Farlex, Inc.](https://appshunter.io/developer/379450386) |

## What reviewers say

### ZKReg

[App page](https://appshunter.io/ios/app/zkreg/id433347362)

Access a comprehensive, up-to-date database of New Zealand registered aircraft. Quickly find registration details, owners, and related aircraft by type or manufacturer. Integrates with search engines for extended information.

**Highlights:** Instant aircraft registration lookup, Hierarchical database navigation, Owner and operator search, Aircraft type and manufacturer grouping, Integrated internet search, Day/night screen modes

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

**In-app purchases:** none


### Spanish Dictionary & Thesaurus

[App page](https://appshunter.io/ios/app/spanish-dictionary-and-thesaurus/id1024764800)

Access a comprehensive Spanish dictionary and thesaurus with English translations. Look up definitions, verb conjugations, and synonyms. Features include offline access, audio pronunciations, and voice search for convenient word discovery.

**Highlights:** Offline Spanish dictionary, Spanish to English translations, Audio pronunciations, Unlimited bookmarks, Voice search, Verb conjugations

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-free upgrade | $4.99 | one-time |


## Frequently asked questions

### Is ZKReg free?

ZKReg costs $5.99, with no in-app purchases.

### Is Spanish Dictionary & Thesaurus free?

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

### Do ZKReg or Spanish Dictionary & Thesaurus have ads?

Spanish Dictionary & Thesaurus shows ads; ZKReg does not.

### Which is updated more often, ZKReg or Spanish Dictionary & Thesaurus?

ZKReg ships an update every 16 months, and Spanish Dictionary & Thesaurus every 16 months. Most recently, ZKReg was updated on November 1, 2026 and Spanish Dictionary & Thesaurus on November 6, 2026.

---

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