NetDoctor: WiFi & Network
Fix Slow Internet, Lag & Drops
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
New: Connection Monitor catches Wi-Fi dropouts and lag spikes that come and go, and tells you whether they happen at home or at your internet provider.
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
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• 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.
The developer, Nguyen SonTung, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Nguyen SonTung
- Size
- 4.8 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 30 more
- English, Arabic, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Persian, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- NetDoctor Pro $5.99
- Copyright
- © BMIT MOB, LLC
