Android · $1 once · Coming soon
Fifteen tools you’d otherwise install fifteen apps for.
Wi-Fi analysis, DNS, traceroute, WHOIS, TLS inspection and subnet maths — plus a lux meter, sound meter, tachometer, inclinometer, graphing calculator, tilt-compensated compass and bubble level. Each one doing its job without a paywall in the middle of it.
Coming to Google Play
Privacy policy
Why I built it
Every one of these tools already exists on the Play Store as a standalone download. You install one to check a Wi-Fi channel, it wants location access and shows you a full-screen ad, you use it twice, and it sits on your phone forever.
I got tired of that arithmetic. Fifteen small tools, one install, no ads, nothing collected. The networking tools are the ones I reach for most — they’re real implementations, not wrappers around a web service.
What makes it different
Traceroute probes each hop for real — routers that stay silent are shown as silent, not invented.
WHOIS over RDAP/HTTPS, so it still works on mobile networks that block port 43.
The compass is tilt-compensated and warns about nearby magnetic interference instead of confidently pointing the wrong way.
The subnet calculator handles /31 and /32 correctly, which a surprising number don't.
The toolkit
01
Wi-Fi Analyzer
Signal, band, channel, security and generation for every network in range, plus the least congested of 1, 6 and 11.
02
IP Information
Local address, public address, gateway and the access point you're attached to. One tap to copy.
03
PoP Inspector
Where your traffic actually exits onto the internet — useful when a hotel network routes you 300 miles away.
04
DNS Lookup
Every record type over DNS-over-HTTPS, with TTLs, exportable as JSON.
05
Traceroute
Hop-by-hop path with each router timed by a direct probe rather than a guess.
06
WHOIS Lookup
Registration, dates and expiry via RDAP over HTTPS — works where port 43 is blocked.
07
TLS Inspector
Who issued the certificate, when it expires, and whether it's actually trusted for that host.
08
Subnet Calculator
Network, broadcast, mask, wildcard and usable host range. Handles /31 and /32 correctly.
09
Graphing Calculator
Plot expressions in x, pan and pinch, tap the curve to read a value. Understands 2x and 3(x+1).
10
Compass
Tilt-compensated magnetic heading that warns about interference instead of lying to you.
11
Bubble Level
Pitch and roll from the accelerometer, for hanging things straight.
12
Lux Meter
Ambient light in lux, what it means for a houseplant, and the exposure value and shutter speed at ISO 100.
13
Sound Meter
Sound level in decibels with session minimum, average and maximum, and an adjustable offset to match a meter you trust.
14
Tachometer
Rotation speed from the flicker in the camera’s view, with the RPM ceiling the frame rate imposes shown alongside.
15
Inclinometer
Angle from level or plumb, and the angle between two surfaces once you zero it against the first.
$1
once. Then it's yours.
A dollar, one time. No subscription, no "Pro" unlock, no second app that costs more. Every update from here on is included, and there will never be a version that asks you for money again.
01
Pay once
A single dollar. No subscription, no tiers, no consumables, no "unlock the rest" screen.
02
Updates forever
Every future version is included. Buying it today buys every tool it ever gains.
03
No ads
Not a banner, not an interstitial, not a rewarded video. Nothing is selling your attention.
04
No spyware
No analytics, no crash reporting, no telemetry. The app has no server to phone home to.
05
No sign-up
No account, no email, no onboarding funnel. Install it and it works.
In use
Want tool number sixteen?
Tell me what's missing. If it fits the app and I can build it properly, it turns up in an update — at no extra cost, because there is no extra cost.
One permission, and it isn't what you think
Android refuses to return Wi-Fi scan results to an app without location permission. That's the only reason Nerd Toolkit asks. Your position is never read, stored or sent. Deny it and every other tool still works.