Truecaller's $15 million TextPlus deal is really about the ad business it's leaving behind

Truecaller is the app that tells you who is calling. TextPlus is, broadly, the sort of thing on the other end of the line. So the most interesting thing about Truecaller's $15 million purchase of TextPlus Inc. is that a company built on identifying calls just bought a company built on being the call.

The deal, agreed in mid-July and due to close in the third quarter, gets Truecaller 100% of a Los Angeles outfit that hands out real U.S. phone numbers and cheap internet-based calls — the "second number" business, an unglamorous corner of telecom that mostly predates the smartphone. This is not Truecaller buying another caller-identification engine, or a big user base to paste its ads onto. It is buying plumbing. And the plumbing is the story.

Let me set the frame for the company behind the deal, because the "who" changes the meaning of the "what."

The machine that's being remodeled

Truecaller is Swedish, listed in Stockholm, and best known in emerging markets, where it sits inside the Android dialer and answers the question "who is ringing me?" before you pick up. It has over 500 million active users. But the oldest and richest version of that machine is wearing down. The company makes most of its money from advertising attached to that privileged spot in the dialer, and that business is shrinking: in the first half of 2026, advertising revenue fell 34% in constant currency, pulling total net sales down by roughly a fifth. The stated villain is a soft ad market and trouble with "a largest demand partner" — a polite way of saying that a big chunk of the ad money flow depends on a partner Truecaller does not control.

Notice how dependent that is. A caller-ID ad business is not really a software business sitting on top of Google's Android; it is a tenant inside Google's dialer, monetizing attention that belongs to an incumbent platform. Truecaller has been pointing out that dependence for a while now — that is the structural problem the TextPlus deal is aimed at.

Hence the pivot. Recurring revenue — subscriptions plus a business-to-business messaging line — is now about half of net sales and growing in constant currency, while ads shrink. Truecaller says it is becoming a "communications platform" rather than just the app that screens your calls. That is exactly the kind of category language that means nothing until you see what they actually bought to prove it. They bought TextPlus.

What $15 million actually buys

TextPlus is a 2009-era VoIP reseller: it buys wholesale connectivity in the background and resells it to consumers as a free texting and calling app with a real U.S. number, making money on "cheap outbound calls" and in-app purchases and subscriptions. For the twelve months through May 2026 it reported about $5.2 million in "adjusted net revenue," growing at a roughly 45% CAGR since 2023, on about 1.5 million monthly active users and a staff of 14.

That is a small asset at a small price — a little under $15 million is roughly 2.9 times trailing adjusted net revenue, and it is pocket change against the roughly SEK 1 billion in cash Truecaller is holding with no financial debt. Perennial reminder that this whole transaction is a rounding error on Truecaller's balance sheet. It is not an earnings event; it is an options event, a way to own a position in a new revenue line without spending real money.

Now, the term "adjusted net revenue" deserves a suspicious look, because it is the classification tell in a deal like this. TextPlus is a reseller — the actual calls and numbers it sells cost it money upstream, the way a retailer pays for inventory. Reporting revenue "adjusted" to strip out that upstream cost is a reasonable way to describe what the consumer-facing business earns, but it is not the same as a gross-revenue software number. The difference matters for what multiple Truecaller is really paying. On the adjusted basis, $15 million for $5.2 million looks like the cheap end of a cheap asset. If you instead measured gross billings, the price would look smaller still — and so would the implied margin.

That is the old-finance-inside point. Second-number and VoIP apps read as consumer software, and get written up as "SaaS," but economically they are thin-margin arbitrage on telecom plumbing: buy wholesale minutes and numbers, mark them up, and hope the free tier converts. It is a distribution machine, not a software royalty. TextPlus has been running that machine since before most of today's "second number" apps existed — it is one of the oldest of them — and its revenue is growing at a genuinely fast clip on a genuinely small base.

Why the deal is less weird than the framing

The reasonable, unexciting interpretation is probably right: this is a cheap bolt-on to give Truecaller a U.S. communications foothold and a recurring rather than advertising revenue line, financed entirely from cash. Nothing about a 14-person, $5.2 million target is going to move the needle on a company that big by itself.

The caution is about what sort of machine Truecaller is climbing into. It is competing with well-capitalized incumbents in second numbers — Google Voice being the obvious one — and it is, in an important sense, leaving its old tenant relationship with the dialer for a business where the cost of the phone service itself is the product. Truecaller's skill has always been the identification layer: knowing who is on the other end. TextPlus's economics are about the minutes and numbers themselves, which is a different, lower-margin game where the "adjusted" accounting does a lot of the work of making the numbers look like software.

None of this is a reason to panic or to cheer. A $15 million acquisition that repositions a company from "the app that tells you who's calling" toward "a machine that routes the call" is worth understanding precisely because it is small: small enough that the real question is whether it is a sign of a durable pivot to recurring revenue, or a cheap way to buy optionality in a crowded, commoditized corner of telecom while the old ad engine keeps cooling. Truecaller bought a reseller. The interesting question for investors is whether resellers, even fast-growing ones with nice-sounding adjusted revenue, are the future they are buying — or just a cheap, familiar costume for a harder transition than the deal makes it look.