Comparison

5G Speed Test Master vs CastLink

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

Head to head
About

5G Speed Test Master

Test your internet connection speed across various networks including 5G, 4G, and Wi-Fi. Diagnose network issues, detect unauthorized Wi-Fi users, and gain insights into your internet performance with detailed graphs and tools.

Highlights
  • 5G, 4G, Wi-Fi speed testing
  • Ping, jitter, and latency tests
  • Network problem diagnosis
  • Wi-Fi device detection
  • Real-time connection graphs
  • Trace route functionality
Features
Read full description

Use Speed Test Master with brand new tools to test your internet speed! ***New features: 5G Speed Test Master & New Tools*** Speed Test Master is a free internet speed meter. It can test speed for 2G, 3G, 4G, 5G, DSL, and ADSL. It's also a wifi analyzer that could help you test wifi connection. Features: - Resolve all internet problems easily with newly added powerful tools like Ping test, Game Ping, Trace Route, etc. - One- tap to test speed for 2G, 3G, 4G, 5G, DSL, ADSL, and Wi-Fi. - Test your download & upload speed, ping latency and jitter, etc. - Diagnose network automatically when bad connection. - Detect which devices are using your wifi without your permission. - Detailed speed test information and Real-time graphs show connection status. Speed Test Master has helped millions of users worldwide to understand: • Is my internet provider giving me the speed I pay for? • Why has the video I watched started buffering? • Who's on my WiFi? • Is someone stealing my WiFi and broadband? And more. Automatic subscription related 1. Subscribing to the membership service will result in direct payment through an iTunes account. 2. 24 hours before the expiration of the subscription service, the system will automatically renew and deduct corresponding fees based on the subscription type. 3. If you need to turn off the automatic subscription service, please do so at least 24 hours in advance in the "Account Settings" section. Please manually open the "Settings" section of your Apple phone ->enter the "iTunes Store and App Store" - "Apple ID" section, select "View Apple ID", enter the "Account Settings" page, click "Subscribe", select the subscription to unsubscribe. If the subscription is not closed at least 24 hours before the end of the subscription period, the subscription will be automatically renewed. 4. After purchasing a subscription, any unexpired free trial will become invalid. Privacy Policy: https://m11iavy23en.feishu.cn/docx/S3KHdVyEzo3jyhxImvncaYr0nTd?from=from_copylink User Agreement: https://m11iavy23en.feishu.cn/docx/CqfvdfgtZo4Rxxxq7l7ceYgunDK?from=from_copylink

About

CastLink

Features
Read full description

一键搜索并连接投屏设备 支持全屏 / 多档分屏、镜像翻转等显示模式 点击「开始推流」即可稳定推送画面,操作简单高效

Screenshots

5G Speed Test Master4 screens
CastLink3 screens

Verdict

The call

The clearest difference is in-app purchases: CastLink at none against 5G Speed Test Master's 4. CastLink also leads on ads (none vs shown) and update cadence (every 4 days vs every 3 weeks). 5G Speed Test Master's advantage is iOS requirement (12.0 vs 15.0). On price and device support 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. 5G Speed Test Master sells 4 in-app purchases, starting at $3.99 per 7 days. CastLink asks for nothing beyond the download.

UpkeepUpdate frequency

5G Speed Test Master ships an update every 3 weeks, CastLink every 4 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
5G Speed Test Master versus CastLink: the parameters behind the verdict, then further details
Parameter5G Speed Test MasterCastLink
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews80.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 3 weeksEvery 4 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size58 MB2 MB
Age rating4+17+
DeveloperChina Aviation Lithium Battery Technology Co., Ltd.Shenzhen GaoshiGo Technology Co., Ltd.

In-app purchases

4 purchases

5G Speed Test Master

Subscriptions3
  • One week VIP3 Days trial$3.997 Days
  • One month VIP3 Days trial$6.991 Month
  • One year VIP3 Days trial$14.991 Year
One-time1
  • Permanent VIP$19.99
None

CastLink

No in-app purchases

Questions

Is 5G Speed Test Master free?
5G Speed Test Master is free to download, with in-app purchases available.
Is CastLink free?
CastLink is free to download, with no in-app purchases.
Do 5G Speed Test Master or CastLink have ads?
5G Speed Test Master shows ads; CastLink does not.
Which is updated more often, 5G Speed Test Master or CastLink?
5G Speed Test Master ships an update every 3 weeks, and CastLink every 4 days. Most recently, 5G Speed Test Master was updated on November 3, 2026 and CastLink on October 31, 2026.

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