ios · utilitytestflight

sonar

local network diagnostics for iphone. no account, no cloud, no trackers.

the export, after a session

4

tabs

43

bonjour

38

cve table

what it is

a network instrument for the moment something changed and nobody believes you. it watches the path, inventories what is on the lan, runs the probes you would otherwise run by hand, and writes the evidence into a bundle you can hand to an isp.

the hard part

what took the longest

measuring a network honestly from inside apple's sandbox, where the useful primitives are the ones you are not allowed to have. no raw sockets, no packet capture, no promiscuous mode. every reading has to come from what a sandboxed app may legally do, and say plainly when that is not enough.

what we kept

reusable in the next one

  1. 01

    a device identity that survives ip churn and mac randomization, so "new device" means new.

  2. 02

    ping and route tracing rebuilt from the little the sandbox permits, honest about the rest.

  3. 03

    an evidence bundle a stranger can open: timeline, summary, redaction note, isp letter.

what it proved

one honest sentence

a diagnostic that refuses to overstate. where the sandbox stops it, the ui says so instead of guessing.

the mac companion

optional · pairs over your own network

a phone sleeps. a mac does not.

sonar can pair with a small companion on a mac you control, on the same network. pairing is local and started by you. the app is complete without it; the companion adds the vantage a phone cannot hold.

  1. 01

    names the silent devices: the real hardware identity of everything on your network, which a phone alone is not allowed to see.

  2. 02

    remembers while you are away: what joined and what left the network while your phone was asleep.

  3. 03

    looks deeper on request: port scans with full certificate detail, from a second vantage point.

download for mac

macos 14 or later · apple silicon · 9.6 mb

signed and notarized under aksial technologies as. it opens without a warning; if you see one, you did not get it from this link.

sha-256 · f06c5a546a97fceb6bd0f059764094fa0c0de0a21fddb68e6b9be31f7268deb9

what it costs

free. no ads, no subscription, no account, no email collected. everything it records stays on your device, and the mac companion download is free too.

built after hours by aksial · oslo

aksial

a two-person hobby studio in oslo. we build the apps we wanted to exist, and we don't stop at the part that demos well.

© 2026 aksial technologies as