# SMTPTester vs Runlow

SMTPTester and Runlow both sit at 1.0 stars, but that hides the real split: 100% of Runlow's written reviews are positive against 20% of SMTPTester's. Runlow also leads on update cadence (every 3 days vs every 11 months). SMTPTester's advantage is in-app purchases (none vs 3) and price ($0.99 vs $1.99). On rating, ratings volume, ads and monetization model there is nothing between them.

SMTPTester costs $0.99 and Runlow $1.99 up front. Runlow sells 3 one-off in-app purchases. SMTPTester asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 1.0 for SMTPTester against 1.0 for Runlow. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 20% of SMTPTester's written reviews are positive against 100% of Runlow's.

SMTPTester ships an update every 11 months, Runlow every 3 days. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | SMTPTester | Runlow |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/smtptester-test-smtp-service/id1633950905/reviews) | [1.0 (1 ratings)](https://appshunter.io/ios/app/runlow-ai-usage-meter/id6790868681/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 20.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 3 days** |
| Monetization | Paid | Paid |
| Best chart rank | **#154** | #176 |
| Size | 25 MB | 21 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | iPhone, iPad, iPod, Mac | **iPhone, iPad, Mac, Apple Watch, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [峰 高](https://appshunter.io/developer/1456326418) | [LEON NELIO FIGUEIRA](https://appshunter.io/developer/6790868683) |

## What reviewers say

### SMTPTester

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

**Currently charting:** #154 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


### Runlow

[App page](https://appshunter.io/ios/app/runlow-ai-usage-meter/id6790868681)

**Currently charting:** #176 Top Paid · Developer Tools (US App Store)

Monitor your AI service token limits and spending across multiple providers in real-time. View usage at a glance with live activities, dynamic island integration, and customizable widgets. Stay informed with notifications before hitting limits.

**Highlights:** Real-time AI usage tracking, Live Activities and Dynamic Island integration, Home and Lock Screen widgets, Service status indicators, Customizable meters and notifications, Mac menu bar app, Private by design, no account needed

**Features:** Apple Watch app, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small tip | $0.99 | one-time |
| Medium tip | $2.99 | one-time |
| Large tip | $4.99 | one-time |


## Frequently asked questions

### Is SMTPTester free?

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

### Is Runlow free?

Runlow costs $1.99, and also offers in-app purchases.

### Which has better reviews, SMTPTester or Runlow?

SMTPTester and Runlow are both rated 1.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do SMTPTester or Runlow have ads?

Neither SMTPTester nor Runlow shows ads.

### Which is updated more often, SMTPTester or Runlow?

SMTPTester ships an update every 11 months, and Runlow every 3 days. Most recently, SMTPTester was updated on November 7, 2026 and Runlow on November 5, 2026.

### Which is more popular, SMTPTester or Runlow?

SMTPTester currently peaks at #154 in the App Store charts, and Runlow at #176. 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.*