T-Mobile killed voicemail, and a Czech-built AI call-answering app climbed the business grossing chart

Lorela answers the calls you missed: it asks the caller what they need and sends a one-minute summary to your Telegram. It launched in August, the developer account uses a personal name, and the store shows only 5 ratings. Yet in Nov 5 it reached #9 on the Czech App Store business grossing chart. It took off mainly not because the product is great, but because a Czech carrier just removed a feature it had offered for twenty years, and Apple and Google's equivalent features don't speak Czech.

The carpenter on the roof

Lorela's homepage shows a sample summary: "9:14, Beneš, +420 731…, water heater leaking, already running onto the floor, needs fixing soon. Urgency: urgent. Callback: tomorrow morning." Below are three user testimonials, one from Honza T., a carpenter in Olomouc: "I was on a roof all day with my phone in the car downstairs. That evening there were three summaries on my phone, one for a CZK 20,000 job. Before, that person would have just called someone else." (lorela.cz, 11-06 to view; the testimonials are published on its own site and can't be verified.)

The pricing section has one line: "Win back one job and it pays for several months." Monthly 299 CZK (about $13), yearly works out to CZK 249, including 60 minutes of calls.

Why now

Because the thing Czechs used as a fallback is gone.

T-Mobile CZ stopped activating new voicemail in Apr 2026 year and turned it off for everyone in Jun 8 15, replacing it with "missed call logs": up to four texts telling you who called in the last 48 hours, but not why they called or what they wanted. It also ignores calls that ring and go unanswered (Lorela's guide page and the competitor Zvednout to? article both cover this). Vodafone's voicemail is automatically shut off after 90 days of non-use.

The phone system was supposed to handle this: iPhone has Live Voicemail, and Pixel has Call Screen. But the former doesn't support Czech, and the latter isn't available in the Czech Republic.

So the "missed calls" of millions of T-Mobile users in Czechia suddenly had no one handling them. For plumbers, mechanics and real estate agents, a missed call is a lost job. Lorela launched in Aug 19, right into that gap.

How it works

No number change, nothing to install. After signing up you get a Lorela number. You dial a call-forwarding code on your own phone (for T-Mobile, 61; to turn it off, 62; for busy, **67), and calls you don't pick up get forwarded. Your phone still rings first. If you answer, it stays out of the way.

The AI calls itself a "digital assistant", asks what the caller needs, and says so directly if asked whether it's a bot. It picks the language from the caller's area code and speaks Czech, Slovak, Polish, English and German, while summaries are always sent to you in Czech. The app can read your contacts and recognize regular clients calling. The app is optional; summaries can go only to Telegram or email.

The smartest part is the homepage demo: leave a number and Lorela calls you right away, so you "hear what your clients hear when you don't pick up."

How much it grew

App Store Czech storefront, 10-28 through 11-06. Over the same period the rating count stayed at 5, with no new ratings in 10 days.

Read this chart with a grain of salt. The Czech business grossing chart has a low bar: 11-06 ahead of it are MobiOffice, and behind it Manychat and WhatsApp Business. A subscription at CZK 299 a month, with a few sign-ups a day, can push it into the top 20 (estimate). The FAQ on its website also separates web subscriptions from App Store subscriptions, and many people pay on the web, which doesn't count toward the chart. Real paying users are probably in the dozens to low hundreds (inference). Android version: 500+ downloads (AppBrain).

It's also going global. The early-November 1.62 release added an English interface, USD pricing and a +1 number. lorela.ai targets US plumbers and auto repair shops at $19 a month. Poland is priced at 59 zloty, and Polish-language ads are already running. 11-03's 1.63 release changed the 7-day trial to require a card up front, probably because too many people were grabbing it for free (inferred). The US and Poland still show a 0 rating.

Where users come from

• Short-video ads on Facebook / Instagram. The Lorela Facebook page posted a Czech-language ad video in Oct 7. Instagram has a Polish one that opens with "Nie denerwuj swojego telefonu. Daj mu asystentkę" (Stop yelling at your phone, give it an assistant). The website's cookie notice says it plainly: we want to know which ad brought you here. How much was spent is not visible from outside.
• Local SEO down to the carrier-code level. Under lorela.cz/navody there is a series of guides: how to dial the call-forwarding codes for O2, Vodafone and T-Mobile; prepaid SIMs can't be transferred, you have to switch to a plan; "T-Mobile removed voicemail, what to do with missed calls." Search that sentence in Czech and it's on the first page. There is also a comparison page that names Zvednu, KraftunAI and AI Recepce.
• Invite link: the invited person gets a longer trial (per the terms of service).

No press coverage. Nobody has mentioned it on X in nearly 90 days, and TikTok search returns nothing. Few people know it exists.

Who it's competing with

In this one small market alone, several companies are doing much the same thing:

Looking worldwide, people have been running this business for a while. The US has Beside (9,211 ratings), SimplyWise, TTYL and Hiya; the UK has Clara, PickedUp and One Click Receptionist (£19 a month). They all play the same game: local accents, tradespeople, about twenty bucks a month. If Lorela goes to the US, all it brings is price, with no local advantage.

The biggest threat is the big tech companies. Samsung is building AI call answering, and if Apple one day adds Czech to Live Voicemail, most of this gap closes.

If it were you

One-line take: don't copy the Czech play, and don't go to the US. What's worth copying is how it found its opening: pick a small-language market the big players don't cover, where local carriers or systems have just broken "you can't reach me" for people, and build the narrowest possible thing, "we answer the calls you missed," self-serve, flat monthly price.

Who it suits: one or two people who speak a minority language, understand the local carrier rules, can build the voice AI stack (phone number + speech recognition + LLM + speech synthesis), and are willing to run their own Meta ads and write local guides.

Not for whom: anyone wanting to target English markets (the US and UK are packed); anyone counting on organic App Store traffic (tools like this B2B get almost no search and almost no ratings); and anyone aiming for a big business. In a small country, a few hundred paying users is the ceiling, on the order of a few thousand dollars a month (estimated).

How to do it:

1. Start by choosing the market. The conditions: Apple Live Voicemail and Google Call Screen don't support the local language or aren't available there, and carriers have recently cut or are cutting voicemail. Small-language markets in Central and Eastern Europe, Northern Europe and Southeast Asia are all worth checking one by one.
2. Build only for missed calls: the customer keeps their number, dials a forwarding code to activate, and a summary is pushed to the chat app local tradespeople use most (Telegram in Czechia, possibly WhatsApp or Viber elsewhere), and it recognizes regular customers from their contacts.
3. A flat monthly fee with a set number of call minutes, not per-call billing. The trial requires a card up front.
4. The website homepage should have a "leave your number and we'll call you right away" demo. For this product, that's the most persuasive page.

How to get customers: Meta short-video ads, with creative showing someone working while the phone rings. Then write a guide for each local carrier's forwarding codes, whether prepaid SIMs can be transferred, and what to do when voicemail is cut. That's SEO, and it also cuts support load. Build one comparison page against the local competitors.

When this window closes: before big tech adds the local language. Samsung is already working on it, so this window is probably one to two years (estimated).

Signs you've misread it: (1) Lorela drops out of the top 50 Business Top Grossing in the Czech store within a month or two and its ratings stop growing, which would mean this demand is a passing wave and paying users don't stick around; (2) Apple or Samsung announces AI call answering that supports Czech; (3) two or three local competitors in your chosen market are already running ads and their rankings aren't moving, which would mean that market is saturated too.

Data and sources

• Charts and ratings: App Store Czech store, 10-28 to 11-06. US and Poland ratings come from public App Store data, 11-06.
• Android download counts: AppBrain, 11-06.
• Product, pricing, user reviews, demo: lorela.cz and lorela.ai web pages and terms of service, checked 11-06. The user reviews are posted by the company on its own site.
• Timeline of T-Mobile removing voicemail: the lorela.cz guide page (updated 9-10) and a zvednoutto.cz article.
• Ads: the Lorela Facebook page video from 10-07 and the Polish Instagram video. Number of ads and spend are not public.
• Competitors: each company's website and App Store page. Zvednu's launch date is unverified.
• "Real paying users in the dozens to a couple hundred" and "a few sales a day gets you into the top 20" are inferences based on chart thresholds.