How to choose a network scanner you can trust
· Trystero Montevideo · 10base-t interactive
A network scanner is one of the most revealing apps you can put on a phone or a Mac. In a few seconds it builds a list of everything in your home: the laptops, the TVs, the cameras, the baby monitor, the smart lock, and the make of each one. That list is worth protecting, so the app that collects it deserves the same scrutiny you'd give a password manager. Most people pick whichever scanner comes up first in the App Store. A few minutes of checking first is a better plan.
TL;DR • Trusting a Scanner
- Check who owns the app today, and whether that has changed; a sale can change pricing, privacy terms and direction
- Prefer an app that needs no account, so your device list stays off someone else's server
- Find out where scan results are stored: on your own devices, or in the developer's cloud
- Read the App Store privacy label and check whether core features need a subscription
Who owns the app, and has that changed?
Network scanners have long lives, and the company behind a familiar name is not always the one that built it. Some of the best-known scanners have been sold more than once, in at least one case to a company whose main business is IT asset management for corporations. A sale doesn't make an app unsafe, but a new owner may change the privacy and data collection policies, among other potential concerns.
Our advice: before you install, look at the developer name on the App Store listing and at the company's own website. If the name on the listing is a company you've never heard of, or the app's history includes an acquisition, read the privacy policy with that in mind. Most privacy policies say what happens to your data if the business is sold, and that paragraph is worth a minute of your time. Our roundup of the best apps to find every device on a network covers who makes each of the popular options today.
Does it need an account?
Scanning your own network doesn't require anyone else's server. An app that asks you to sign up before it will show you your own devices is making a choice, usually so it can sync your list, sell a subscription, or offer monitoring from its cloud. That can be convenient, but it also means a record of your home's devices sits in an account the developer controls.
We'd start with an app that scans fully on your device and works without signing in. If you later want to check your network from somewhere else, look for one that syncs through your own iCloud rather than its own service.
Where does your device list live?
Apple asks every developer to declare what data their app collects, and the App Store shows it in the privacy label on each listing, under headings such as "Data Linked to You", "Data Not Linked to You" and "Data Not Collected". Scroll to the App Privacy section before you tap Get. For a tool that maps your home network, "Data Not Collected" is the label you want to see. A long list of data linked to your identity is a good reason to keep looking.
How do you pay for it?
Pricing tells you a lot about where an app's priorities lie. A free tier with ads, or a free app whose monitoring and security checks need a monthly subscription, keeps you paying for as long as you use it, and the terms can change. A one-time purchase is simpler: you buy the features you need and keep them. Neither model is wrong, but know which one you're signing up for before your network depends on it.
Frequently asked questions
Can a network scanner see my passwords or the contents of my devices?
No. A scanner discovers which devices are on your network and identifies them by address, name and manufacturer. It doesn't read files, messages or passwords. What it does collect, a full inventory of your home's devices, is still sensitive, which is why it matters where that list ends up.
Does a network scanner need internet access to work?
Not for scanning your own network. Discovery happens over your local Wi-Fi. Internet access is only needed for extras such as looking up a manufacturer, syncing between devices, or checking a network remotely.
Is a free network scanner safe to use?
It can be. What matters is how the app pays for itself, and three checks answer that: the privacy label, whether an account is required, and what the paid tier unlocks.
Does IP Scanner pass these checks?
10base-t makes IP Scanner, so weigh this answer accordingly. It has been developed by 10base-t interactive since 2002, and the original creators of all of 10base-t interactive's apps are still actively involved in maintaining and updating all of their products, including IP Scanner and DropCopy, as well as adding new complementary apps such as R2 Bucket Boss, for pro level Cloudflare bucket management. IP Scanner needs no account, it scans locally on your device, its App Store listing says "Data Not Collected", and its upgrades are one-time purchases. Remote Scans, which let you check your network from another device, sync through your own private iCloud and are included free. Get IP Scanner for Mac, iPhone, iPad and Apple Vision Pro.