# SMTPTester vs Shell Keyboard

The clearest difference is rating: Shell Keyboard at 5.0 against SMTPTester's 1.0. Shell Keyboard also leads on update cadence (fortnightly vs every 11 months) and chart position (#25 vs #155). SMTPTester's advantage is device support (4 vs 2) and iOS requirement (11.0 vs 16.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

SMTPTester costs $0.99 and Shell Keyboard $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Shell Keyboard holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

SMTPTester ships an update every 11 months, Shell Keyboard fortnightly. The most recent releases landed on October 25, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | SMTPTester | Shell Keyboard |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/smtptester-test-smtp-service/id1633950905/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/shell-keyboard/id6811290737/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Fortnightly** |
| Monetization | Paid | — |
| Best chart rank | #155 | **#25** |
| Size | 25 MB | 3 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [峰 高](https://appshunter.io/developer/1456326418) | [Nguyen Nguyen](https://appshunter.io/developer/1071455830) |

## What reviewers say

### SMTPTester

[App page](https://appshunter.io/ios/app/smtptester-test-smtp-service/id1633950905)

**Currently charting:** #155 Top Paid · Developer Tools (US App Store)

This tool allows users to test SMTP server functionality by sending emails. It helps identify and log any errors encountered during the testing process.

**Highlights:** SMTP server testing, Email sending, Error logging, Server address input, User information input

**Features:** Vision Pro support

**In-app purchases:** none


### Shell Keyboard

[App page](https://appshunter.io/ios/app/shell-keyboard/id6811290737)

**Currently charting:** #25 Top Paid · Developer Tools (US App Store)

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

**In-app purchases:** none


## Frequently asked questions

### Is SMTPTester free?

SMTPTester costs $0.99, with no in-app purchases.

### Is Shell Keyboard free?

Shell Keyboard costs $0.99, with no in-app purchases.

### Which has better reviews, SMTPTester or Shell Keyboard?

Shell Keyboard is rated higher. SMTPTester averages 1.0 out of 5 from 1 ratings, while Shell Keyboard averages 5.0 from 1 ratings.

### Do SMTPTester or Shell Keyboard have ads?

Neither SMTPTester nor Shell Keyboard shows ads.

### Which is updated more often, SMTPTester or Shell Keyboard?

SMTPTester ships an update every 11 months, and Shell Keyboard fortnightly. Most recently, SMTPTester was updated on October 25, 2026 and Shell Keyboard on October 26, 2026.

### Which is more popular, SMTPTester or Shell Keyboard?

SMTPTester currently peaks at #155 in the App Store charts, and Shell Keyboard at #25. Chart position reflects recent download velocity rather than total install base.

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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.*