# SMTP PROMOTION vs Phone Validator

The clearest difference is in-app purchases: SMTP PROMOTION at none against Phone Validator's 1. SMTP PROMOTION also leads on iOS requirement (12 vs 15.6). Phone Validator's advantage is update cadence (every 3 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Phone Validator sells 1 one-off in-app purchase. SMTP PROMOTION asks for nothing beyond the download.

SMTP PROMOTION ships an update every 3 months, Phone Validator every 3 weeks. The most recent releases landed on October 14, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | SMTP PROMOTION | Phone Validator |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 56 MB | 36 MB |
| Requires iOS | **12** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Unlatch](https://appshunter.io/developer/1488436624) | [Nghi Doan](https://appshunter.io/developer/1672353938) |

## What reviewers say

### SMTP PROMOTION

[App page](https://appshunter.io/ios/app/smtp-promotion/id1615765535)

**Features:** macOS Compatibility

**In-app purchases:** none


### Phone Validator

[App page](https://appshunter.io/ios/app/phone-validator/id6446827523)

Quickly verify phone numbers to identify their line type (mobile, landline, VoIP, or invalid). Supports individual checks and bulk uploads via CSV for efficient contact list cleaning and data validation.

**Highlights:** Bulk phone number lookup, Export results to CSV, Individual phone number check, Detailed logs, Supports all countries

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads forever | $9.99 | one-time |


## Frequently asked questions

### Is SMTP PROMOTION free?

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

### Is Phone Validator free?

Phone Validator is free to download, with in-app purchases available.

### Do SMTP PROMOTION or Phone Validator have ads?

Neither SMTP PROMOTION nor Phone Validator shows ads.

### Which is updated more often, SMTP PROMOTION or Phone Validator?

SMTP PROMOTION ships an update every 3 months, and Phone Validator every 3 weeks. Most recently, SMTP PROMOTION was updated on October 14, 2026 and Phone Validator on October 12, 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.*