
NetDoctor: WiFi & Network
Fix Slow Internet, Lag & Drops
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Free
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About
Why is my Wi-Fi slow? NetDoctor finds out.
One tap runs a full check-up of your home network and tells you, in plain language, whether the problem is your Wi-Fi, your router, your internet provider or DNS — and what to do next.
DIAGNOSIS, NOT JUST NUMBERS
• A health score with the evidence behind it
• Clear answers like "Your Wi-Fi is fine. Your DNS is slow."
• Confidence level and step-by-step fixes
WHAT NETDOCTOR CHECKS
• Phone → router latency, jitter and packet loss
• Internet latency and stability
• DNS speed compared with Cloudflare, Google and Quad9
• Download and upload speed
• Sign-in pages, VPN, IPv6 and Low Data Mode
WI-FI OR PROVIDER? WE CAN TELL
Run the same test on Wi-Fi and on cellular to see where the problem really is.
FIND WEAK SPOTS AT HOME
Wi-Fi Health Map: test each room and see which ones need help — based on real performance, not just signal bars.
SEE EVERY DEVICE ON YOUR NETWORK
Router, Apple TV, printers, speakers, smart home and more. New devices are highlighted — without scary "you've been hacked" alarms.
LAG UNDER LOAD
The bufferbloat test explains "500 Mbps, but my game still lags."
HISTORY
See when your network got worse: "Health dropped from 94 to 61."
PRIVATE BY DESIGN
No account. No cloud. No ads. No tracking. Your diagnostics stay on your iPhone.
CATCH DROPOUTS THAT COME AND GO — NEW
Calls freeze and games lag, but a speed test looks fine? Connection Monitor checks your router and the internet every second for 5 to 60 minutes, then tells you whether the dropouts happen on your Wi-Fi or at your provider. Your first session is free.
DID THE FIX WORK? — NEW
After you try a fix, check again and see your result before and after.
READY FOR IPHONE DUO
Two columns on the large inner screen.
NETDOCTOR PRO — PAY ONCE
Wi-Fi Health Map, lag-under-load test, DNS Compare, unlimited history and trends, device naming and shareable reports. One-time purchase, no subscription. Try each Pro test once for free.
Speed tests use Cloudflare's public speed servers and use mobile data when you're on cellular.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://bmit-mob.web.app/net-doctor/privacy-policy.html
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What's New in NetDoctor
1.0.1
October 27, 2026
• New: Connection Monitor watches your router and the internet for 5–60 minutes to catch dropouts and lag spikes a single test misses, and shows where they happen. • New: after you try a fix, check again and see your result before and after. • Health Map: try 3 rooms before going Pro. • Ready for iPhone Duo, with two columns on the large screen. • Clearer permission screens, lighter speed tests on cellular data, and better layouts for large text.
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Subscriptions & In-App Purchases
$5.99
NetDoctor Pro
All Pro tests. Pay once, yours forever.






