# Zip Code vs Grail Spark

The clearest difference is in-app purchases: Zip Code at none against Grail Spark's 2. Zip Code also leads on iOS requirement (15.0 vs 17.0). Grail Spark's advantage is ads (none vs shown) and update cadence (weekly vs monthly). On price and device support there is nothing between them.

Both are free to download. Grail Spark sells 2 in-app purchases, starting at $5.99 per 7 days. Zip Code asks for nothing beyond the download.

Zip Code ships an update monthly, Grail Spark weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Zip Code | Grail Spark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (553 ratings)](https://appshunter.io/ios/app/zip-code/id920751129/reviews)** | — |
| Number of ratings | **553** | — |
| Positive reviews | 55.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Weekly** |
| Monetization | Ad-supported | — |
| Size | 18 MB | 1 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [IDB LLC](https://appshunter.io/developer/917634021) | [Yu Zhao](https://appshunter.io/developer/6788705398) |

## What reviewers say

### Zip Code

[App page](https://appshunter.io/ios/app/zip-code/id920751129)

Easily find zip/postal codes for your current location or search by city name. This intuitive tool helps you quickly locate area codes or zip codes without hassle, perfect for travelers and professionals.

**Highlights:** Find current zip/postal code, Search zip code by city, Search area code by city, Search city by area code, Simple interface

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

**In-app purchases:** none


### Grail Spark

[App page](https://appshunter.io/ios/app/grail-spark/id6799032121)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $5.99 | per 7 days |
| Pro Yearly | $49.99 | per year |


## Frequently asked questions

### Is Zip Code free?

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

### Is Grail Spark free?

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

### Do Zip Code or Grail Spark have ads?

Zip Code shows ads; Grail Spark does not.

### Which is updated more often, Zip Code or Grail Spark?

Zip Code ships an update monthly, and Grail Spark weekly. Most recently, Zip Code was updated on October 24, 2026 and Grail Spark 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.*