Comparison

DEKRA TACS4 vs QMaxs

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

Head to head

About

DEKRA TACS4

Features

Read full description

TACS4-Mobile This is an engineering/professional tool addressed to carriers, phone vendors and others which want to evaluate the quality of its wireless network and its device.

About

QMaxs

Features

Read full description

TESTCOO was established in 2015, industry’s first “Internet Plus Inspection” third party service platform. With aim to serve global demand of quality assurance, Testcoo provides inspection, testing, certification and audit services to “Sell Global” and “Buy Global” customers. With its innovative tools, optimum quality guarantees and low-cost prices, Testcoo changes the traditional inspection business model, reshapes the industry’s ecosystem and ignite the new era of e-inspection. Contact Us Feedbacks: service@testcoo.com Customer service: +8618038155583 Website: www.testcoo.com

Screenshots

DEKRA TACS43 screens

QMaxs3 screens

Verdict

The call

The clearest difference is iOS requirement: DEKRA TACS4 at 11.0 against QMaxs's 13.0. On price, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

DEKRA TACS4 ships an update every 5 weeks, QMaxs every 6 weeks. The most recent releases landed on October 26, 2026 and November 3, 2026 respectively.

Scorecard1 real difference · 5 level

DEKRA TACS4 versus QMaxs: the parameters behind the verdict, then further details
Parameter	DEKRA TACS4	QMaxs
Price	Free	Free
Update frequency	Every 5 weeks — better	Every 6 weeks
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPad, iPod — better
Requires iOS	11.0 — better	13.0
Further details — not scored
Size	30 MB	70 MB
Age rating	4+	4+
Developer	AT4 wireless S.A.	Ningbo Jialian Network Technology Co., Ltd.

In-app purchases

None

DEKRA TACS4

No in-app purchases

None

QMaxs

No in-app purchases

Questions

Is DEKRA TACS4 free?

DEKRA TACS4 is free to download, with no in-app purchases.

Is QMaxs free?

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

Do DEKRA TACS4 or QMaxs have ads?

Neither DEKRA TACS4 nor QMaxs shows ads.

Which is updated more often, DEKRA TACS4 or QMaxs?

DEKRA TACS4 ships an update every 5 weeks, and QMaxs every 6 weeks. Most recently, DEKRA TACS4 was updated on October 26, 2026 and QMaxs on November 3, 2026.