# SMTP Lookup vs ZAP Admin

The clearest difference is in-app purchases: SMTP Lookup at none against ZAP Admin's 4. SMTP Lookup also leads on device support (3 vs 1) and iOS requirement (12.0 vs 17). On price and ads there is nothing between them.

Both are free to download. ZAP Admin sells 4 in-app purchases, starting at $239.99 per year. SMTP Lookup asks for nothing beyond the download.

## The numbers

| Metric | SMTP Lookup | ZAP Admin |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 months |
| Size | 37 MB | 17 MB |
| Requires iOS | **12.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Paul Barlow](https://appshunter.io/developer/1093150218) | [Advitiya Kumar](https://appshunter.io/developer/1658547135) |

## What reviewers say

### SMTP Lookup

[App page](https://appshunter.io/ios/app/smtp-lookup/id6468663395)

**Features:** macOS Compatibility

**In-app purchases:** none


### ZAP Admin

[App page](https://appshunter.io/ios/app/zap-admin/id6730117903)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Digital Queue | $239.99 | per year |
| 3 Digital Queues | $539.99 | per year |
| 5 Digital Queues | $749.99 | per year |
| 10 Digital Queues | $999.00 | per year |


## Frequently asked questions

### Is SMTP Lookup free?

SMTP Lookup is free to download, with no in-app purchases.

### Is ZAP Admin free?

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

### Do SMTP Lookup or ZAP Admin have ads?

Neither SMTP Lookup nor ZAP Admin shows ads.

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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.*