Comparison

Preview App vs SMTPTester

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

Preview App

developers & designers

Test SMTP Server.

★ 1.01 ratingsView app →

About

Preview App

Features

Read full description

Do you want to preview what your app looks like on the app store in advance? Let me help you. First download this app and then edit your app information. You can see the 6.5-inch and 6.9-inch app preview.

About

SMTPTester

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

Currently charting

#154Top Paid · Developer Tools

Read full description

SMTPTester is an SMTP service test tool, through which you can fill in the server address, user information, and then send mail, if there is an error, you can log

Screenshots

Preview App4 screens

SMTPTester2 screens

Verdict

The call

The clearest difference is chart position: SMTPTester at #154 against Preview App's unranked. SMTPTester also leads on device support (4 vs 2) and price ($0.99 vs $1.99). On update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Preview App costs $1.99 and SMTPTester $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Preview App ships an update every 13 months, SMTPTester every 11 months. Both last shipped on October 30, 2026.

Scorecard4 real differences · 7 level

Preview App versus SMTPTester: the parameters behind the verdict, then further details
Parameter	Preview App	SMTPTester
Price	$1.99	$0.99 — better
Rating	—	1.0 (1 ratings) — better
Positive reviews	—	20.0% of reviews
Number of ratings	—	1 — better
Update frequency	Every 13 months	Every 11 months — better
Ads	No	No
In-app purchases	No	No
Monetization	—	Paid
Best chart rank	—	#154 — better
Devices	iPhone, iPod	iPhone, iPad, iPod, Mac — better
Requires iOS	15.6	11.0 — better
Further details — not scored
Size	8 MB	25 MB
Age rating	4+	4+
Developer	Cangmu Technology Co., Ltd	峰高

In-app purchases

None

Preview App

No in-app purchases

None

SMTPTester

No in-app purchases

Questions

Is Preview App free?

Preview App costs $1.99, with no in-app purchases.

Is SMTPTester free?

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

Do Preview App or SMTPTester have ads?

Neither Preview App nor SMTPTester shows ads.

Which is updated more often, Preview App or SMTPTester?

Preview App ships an update every 13 months, and SMTPTester every 11 months. Most recently, Preview App was updated on October 30, 2026 and SMTPTester on October 30, 2026.