For journalists and reviewers
Radien press kit
Last updated 13 August 2026
Everything here is free to use in coverage of Radien. Screenshots are raw and unframed, at full device resolution, with real data. If you need something that is not here, or a promo code for the paid unlock, email radien@arsenkin.name and you will get a reply the same day.
Download the complete kit (ZIP, about 6 MB)
Fact sheet
- App name
- Radien: Network Toolbox
- Pitch
- A network diagnostics toolbox for iPhone and iPad that runs entirely on your device and only reports what a network client can honestly observe.
- Price
- Free to download. A one-time Radien Pro unlock costs $9.99. There is no subscription and no advertising.
- Platforms
- iPhone and iPad running iOS 18.0 or later. Also runs on Apple Silicon Macs.
- Released
- 21 July 2026. Current version 1.6, released 10 August 2026.
- Developer
- Igor Arsenkin, an independent developer in Kyiv, Ukraine.
- App Store
- apps.apple.com/app/id6789207545
- Size
- About 15 MB.
- Languages
- English, Chinese (Simplified), Japanese, Spanish, German, French, Portuguese, Korean, Italian.
One sentence
Radien is a network diagnostics toolbox for iPhone and iPad that runs entirely on your device, collects nothing, and refuses to invent a verdict it cannot prove.
One paragraph
Radien puts nine network tools in one app: Ping, Multi Ping, Traceroute, DNS Lookup and Reverse DNS, Port Scanner, TLS Inspector, Subnet Calculator, IP Converter and MAC Converter. Every one of them connects straight from the device to the destination the user chose, and reports only what a network client can genuinely see. There are no ads, no trackers, no analytics, no accounts and no servers behind it, and the MAC vendor database is bundled inside the app so lookups never leave the phone. It is free, with a one-time $9.99 unlock for the deeper features, and it is built by one developer using Apple frameworks alone.
The longer story
Most network utilities on mobile share a habit: they translate ordinary findings into alarm. An open port becomes a vulnerability, a certificate gets an invented letter grade, a slow hop becomes a warning badge. The information is often correct and the conclusion rarely is.
Radien was built on the opposite rule. A port is reported as open, closed or filtered, because those three states are what a TCP connection attempt can actually distinguish, and the difference between a refused connection and a silently dropped packet is usually the whole answer. A traceroute that shows loss in the middle of a path but a clean destination says the replies are being rate limited, because that is what it means. The TLS Inspector reads a real certificate chain and reports what it finds without a grade, and it never hands the hostname to a third-party checking service.
Some of that honesty required doing the work the hard way. iOS will not expose the fields inside a certificate, so Radien contains its own ASN.1 and X.509 parser. Apple's TLS stack refuses to offer weak ciphers, which means anything built on it is structurally blind to them, so Radien hand-crafts its own ClientHello messages to find out what a server will actually accept. There is no third-party code in the app at all.
Version 1.2 extended the same principle to users who cannot see the screen. Every tool is usable with VoiceOver, every long-press action is exposed as a rotor action, and the ping latency chart adopts Apple's Audio Graphs, so a blind user can hear their connection as rising and falling tones with silence where packets were lost. The app declares six accessibility features on its App Store nutrition label, and each one was verified by hand before it was published.
Features
- Ping measures latency, jitter and packet loss to any host, with a live chart and a plain-language verdict.
- Multi Ping compares up to four hosts side by side at the same time.
- Traceroute shows every hop with reverse-DNS names and an honest read on where delay or loss actually begins.
- DNS Lookup queries any record type against the system resolver or Google, Cloudflare and Quad9, and reverses an IP address to a PTR record.
- Port Scanner reports open, closed or filtered TCP ports and never makes a vulnerability claim.
- TLS Inspector reads a site's real certificate chain, protocol versions and cipher support directly from the device.
- Subnet Calculator does IPv4 and IPv6 math with honest handling of /31 and /32, plus equal splits and a live bit view.
- IP Converter turns any IP notation into every other form and shows how an IPv4 address rides inside IPv6.
- MAC Converter handles every notation plus EUI-64, and looks up vendors from a database bundled in the app, so nothing is sent anywhere.
- Full VoiceOver support including Audio Graphs, plus Voice Control, Larger Text, Reduced Motion, Dark Interface and Sufficient Contrast.
- No ads, no trackers, no analytics, no accounts, no third-party SDKs.
Screenshots
Raw and unframed, at full device resolution, exactly as the app looks in use. Nine from iPhone and five from iPad. Click any image for the full-size file.
App icon
Available at 1024, 512 and 256 pixels, in light and dark variants, inside the ZIP.
About the developer
Igor Arsenkin is an independent iOS developer based in Kyiv, Ukraine, with more than ten years of experience writing production code. He published his first App Store utility, NetworkHelper, in 2016, and holds an MSc in cryptography. Radien is his own project, built alone and without third-party code.
Contact
Email radien@arsenkin.name. Promo codes for the paid unlock are available on request for review purposes.