# SMTP Tester Pro vs CooliApp

The clearest difference is price: CooliApp at Free against SMTP Tester Pro's $3.99. CooliApp also leads on review sentiment (100% vs 75%) and update cadence (every 2 weeks vs every 6 weeks). SMTP Tester Pro's advantage is iOS requirement (16.6 vs 26.0). On ads, in-app purchases and device support there is nothing between them.

CooliApp is free to download; SMTP Tester Pro costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SMTP Tester Pro ships an update every 6 weeks, CooliApp every 2 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | SMTP Tester Pro | CooliApp |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/cooliapp/id6759116923/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 75.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | Paid | **Free** |
| Size | 4 MB | 14 MB |
| Requires iOS | **16.6** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Dorian Borovina](https://appshunter.io/developer/1772141221) | [Aurel Tyson](https://appshunter.io/developer/851111039) |

## What reviewers say

### SMTP Tester Pro

[App page](https://appshunter.io/ios/app/smtp-tester-pro-email-test/id6736591154)

This application helps developers and IT professionals test and debug SMTP connections. It offers an intuitive interface for configuring servers, composing emails, and analyzing detailed transaction logs. Predefined templates for popular services and custom template management simplify setup and troubleshooting.

**Highlights:** SMTP server configuration, Support for various authentication methods, Multiple TLS modes, Customizable timeout settings, Email composition with CC/BCC, Template management, Detailed SMTP transaction logs

**Features:** macOS Compatibility

**In-app purchases:** none


### CooliApp

[App page](https://appshunter.io/ios/app/cooliapp/id6759116923)

Manage your self-hosted cloud infrastructure directly from your iPhone. Monitor projects, services, and servers, track deployments in real-time, and view live logs. Includes home screen widgets for at-a-glance status updates.

**Highlights:** Manage projects, environments, and services, View application details and deployment history, Monitor server status, Track real-time deployments, Home screen widgets for infrastructure status, Connect multiple Coolify instances, Secure API token storage

**In-app purchases:** none


## Frequently asked questions

### Is SMTP Tester Pro free?

SMTP Tester Pro costs $3.99, with no in-app purchases.

### Is CooliApp free?

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

### Do SMTP Tester Pro or CooliApp have ads?

Neither SMTP Tester Pro nor CooliApp shows ads.

### Which is updated more often, SMTP Tester Pro or CooliApp?

SMTP Tester Pro ships an update every 6 weeks, and CooliApp every 2 weeks. Most recently, SMTP Tester Pro was updated on October 30, 2026 and CooliApp on October 31, 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.*