Sangiorgi SRL

Alessandro Sangiorgi, Founder

Militello in val di Catania, Italy
Alessandro Sangiorgi and members of the Sangiorgi SRL team hanging out along the Sicilian coastline The logo for Sangiorgi SRL, Alessandro Sangiorgi’s business behind free security and productivity mobile apps
Securing the signal

Before there was even the idea for an app or a business behind the app, there was Alessandro Sangiorgi, a native of a small Sicilian commune called Militello in Val di Catania, which boasts a population of about 6,000 people.

Alessandro, at the time, had wanted to attend university in earnest, to get a degree in computer engineering and make a developer out of himself. There was just one hitch.

“I’m from a very tiny town,” Alessandro describes. “There’s no university there.”

So he did what any small-town guy with big dreams does: he set out to get a degree in the nearby, and much larger city of Catania.

But while studying, Alessandro couldn’t help himself. He had to apply all that he was learning to practical matters, to solve some problems out in the real world.

So that’s when he came up with his first app, a rather useful tool with a rather forthright name: WIFI WPS WPA TESTER.

Its mission is to help people test whether their Wi-Fi networks were secure, because, back then, vulnerabilities like WPS exploits were very common. It’s when someone can guess or crack your Wi-Fi password and start using your home’s network as if it were their own, sapping away valuable bandwidth, intercepting traffic, or reaching other devices on the network.

Most folks at the time had no idea their routers might be vulnerable in the first place, or that someone nearby could even gain access to their network without permission (and so easily).

“I built it for a functional purpose, something educational,” Alessandro explains. “So users could see the issue right away, and fix it.”

What happened next, however, blew past Alessandro’s expectations for what he had considered to be only a side quest to his studies all along. Without any marketing budget whatsoever, and with no formalized strategy in mind, the app started growing and kept growing, all organically too.

People were downloading it, telling their friends about it, even reaching out with stories about what they had discovered, all thanks to Alessandro's app.

“I started getting emails from people saying things like, ‘I found out my neighbor was using my Wi-Fi!’” he says.

As it turns out, a significant number of people were wondering the same thing, and that, in turn, kept his organic momentum going, eventually helping the app rack up more than 165 million downloads all over the globe over its lifetime; its users concentrated in APAC, and spread across Europe and the United States too.

It got so big that Alessandro needed to figure out a business model to handle (and capitalize) on his app’s prosperity.

Screenshot from WIFI WPS WPA TESTER, Alessandro Sangiorgi’s original Wi-Fi security app
Opening access

But Alessandro didn’t have to stress for too long because he already had an answer in mind. “I wanted people to be able to use it for free,” he says. “At the same time, it had to sustain my business too.”

So just a couple months after launching WIFI WPS WPA TESTER, he integrated the app with Google AdMob, helping him start to display ads within the app, and bringing in much needed revenue to keep the whole thing accessible and free to all.

Fast forward to today, and you’ll find that advertising has become the lifeblood of the company he started, his namesake: Sangiorgi SRL. It’s also the name behind a whole range of apps that Alessandro would eventually launch to go alongside the original one.

There’s a productivity app for one, called Ruppu that lets people pin notes, links, content, whatever’s on their mind directly into the notification panel on their Android device. Then there’s a close relative to his original security app, this one called WPA Calculator, which helps users recover the default password for their own Wi-Fi router when that information, as it often happens, has been lost or forgotten.

And while ad revenue has helped Alessandro to keep building without charging, it’s also helped him to grow something else: a small, but mighty team, including a designer and a computer science PhD.

“I realized I couldn’t do everything myself,” he says. “Once there was enough revenue, I could start tapping into talent that could improve the apps in ways I couldn’t.”

Throughout all the growth, however, he’s stayed with AdMob, half because it was familiar, and half because of the flexibility it offered.

“When you start understanding the reports, the API, it’s become quite valuable, and the mediation tools make it easy to manage yield,” he says, referring to how AdMob lets developers work with multiple ad networks, having them compete for which ad gets to ultimately appear.

Then, of course, there’s the matter of strict privacy requirements, especially if you’re operating out of Europe with the GDPR.

That’s where built-in consent management tools in AdMob offer relief to the likes of Alessandro, sparing him from having to process each user’s consent choices himself, and freeing him up to focus more on the product development work itself.

And, of course, who could forget about another tool that’s now become part of his everyday workflow: AI.

“For the last six to eight months, AI has been like a partner for us,” he says. “We use Gemini for code reviews and when we’re iterating on new features.”

“I wanted people to be able to use my apps for free, but at the same time, I had to sustain my business too.”
Alessandro Sangiorgi with the rest of the Sangiorgi SRL team working remotely to develop free security and productivity mobile apps
Strengthening the network

When Alessandro looks back on the journey he’s taken from Militello in Val di Catania to the neighboring city of Catania, then on to Google events and developer conferences all over the world, it’s easy to see why he’d sum it up the way he does:

“It’s completely changed my life.”

He adds, “I was able to travel, meet people, and even learn English through those experiences.”

And when he flips through his highlights reel, a few moments stand out: being featured by Google at Mobile World Congress in Barcelona, attending app summits at the Google Dublin office, forming partnerships with other developers from other global enterprises along the way.

But despite those memories, what he appreciates the most about the work is “community,” the word he uses to refer to the millions of international users interacting with his apps everyday.

And a lively bunch they are. Through channels like Telegram, they often share feedback with Alessandro, suggest improvements, even help each other troubleshoot issues.

Today, Alessandro balances running his company with a full-time gig at Red Hat, the open-source software company that’s now a part of IBM, often working across time zones to stay connected with his various teams.

“I usually wake up at 5 a.m. to coordinate with them,” he says, highlighting how he takes advantage of the time differences between where the companies are located.

When he’s asked to shed light on what’s in store for Sangiorgi SRL, he spotlights one exciting development in particular: launching COAT (Comprehensive Online Agreement Transparency), a new Android app that’s backed by a European Union grant, which uses AI to analyze privacy policies and terms of service to give users a privacy score and a plain-language summary of what they're agreeing to.

But no matter how far he’s come, and what other apps he plans to launch, he anchors himself in the mindset he had from the very start of his whole adventure.

“Think about something useful; then just start. You’ll figure things out as you go. I know it because I’ve done it.”

About the Publisher

Alessandro Sangiorgi is the founder of Sangiorgi SRL, the mobile app company behind such apps as WIFI WPS WPA TESTER, a productivity app called Ruppu, and a network password recovery app called WPA Calculator. Originally from a small town called Militello in Val di Catania, Alessandro started his app development career while he was studying computer engineering at a university in the neighboring city of Catania, and later earned a master's in computer science at Saint Louis University in the United States. Today, his growing portfolio and team reaches millions of users worldwide, while he works full-time as a senior software engineer at open source software company Red Hat.

Alessandro Sangiorgi, founder of Sangiorgi SRL and creator of the WIFI WPS WPA TESTER app