Opportunities › Real estate listing notifications for apartment hunters › Proposed app
Doorbell Hunt
One instant alert for new rental listings from every platform you watch
- Score
- 39
- confidence 50
- Evidence
- 9
- items on the page
- Rivals
- 4
- named in sources
- First version
- 25 d
- estimate
- Type
- Mobile app
- PWA: installs on iPhone and Android
- Market since
- 1999
- Mature market · AI estimate
ScreensConcept
Mobile app: Apartment hunters need instant alerts and quick access while out viewing listings in the city. Sample screens on a phone, in the proposed brand. Their numbers are sample data.
New listing
€1,150
- Rooms2
- Size58 m²
- DistrictNeukölln
- Found on2 platforms
- Posted2 min ago
About this appAI proposal
Doorbell Hunt watches the rental sites you already check and tells you when a new listing matches your search. Set city, budget, size and district once. Alerts arrive as a push notification, an email or a chat message, whichever you read first.
It is made for apartment hunters in European cities where good flats disappear within hours. Instead of reloading several sites all day, you get one feed of new listings, with duplicates from different platforms merged into one entry.
Platform alerts work one site at a time, and users say they often arrive late. Doorbell Hunt puts every search in one place, lets you set quiet hours, and keeps a short list so you can contact landlords quickly.
- Tagline
- Be first through the door.
- Voice
- CalmQuickPlain
- Why this name
- A doorbell rings the moment someone arrives; the app rings when a new flat does. Hunt names the task in a plain word.
In the first version
Members say which features they would use. It tells PWAS what people want; it changes no score.
Cross-platform watch
One search covers several rental platforms, so you stop switching between sites and tabs.
No member yet
Alerts where you are
Choose push, email or a chat app per search. Urgent matches can use a faster channel.
No member yet
Duplicate merging
The same flat posted on two sites shows up once, with links to every source.
No member yet
Precise filters
Rent, rooms, area, district, furnished or not, plus keywords to include or exclude.
No member yet
Brand identityAI proposal
Check the name against trademark registers before using it.
Palette
#0F4C5CDeep Teal · primary#FAF6EFWarm Paper · surface#1B2A30Ink · text#E8702ADoor Orange · accent#8FB8A8Sage · data
Typography
Aa
Doorbell Hunt
ABCDEFGHIJKLMNOPQRSTUVWXYZ 0123456789
Be first through the door.
PricingAI proposal
The material gives no competitor prices. These tiers are a starting point to test, based on the freemium idea in the opportunity.
Free
Free
- 1 search
- Email alerts
- Delayed alerts
Hunter
$9 a month
- 5 searches
- Push and chat alerts
- Fast alerts
- Duplicate merging
- Shortlist and notes
Season
$24 once
- Everything in Hunter
- 3 months of access
- Reply templates
Would you pay Hunter · $9 a month?
Your answer tells PWAS which prices people accept. It changes no score.
No answers yet.
What it could be worthEstimate
What a software business making this much sells for today, from real deals. Pick a monthly revenue.
If it makes
Worth about
$194,000
Sale range $132,000 to $263,000
$120,000 a year in revenue
From 87 software businesses listed and sold on Empire Flippers in the last year, revenue vetted by the broker: they sell for about 19× their monthly revenue, most between 13× and 26×.
Measured on profit, the middle deal is 32× monthly net profit: about 2.7 years of profit.
An estimate, not an offer or financial advice. A real price depends on profit, growth, churn, how much of the work is the owner's, and the buyer.
How it would growAI proposal
How the product would reach new customers through its own use, and how the first ones would be found. A plan to test, not a result.
- Built-in loop
- Shared outputs. Users share a listing or a shortlist link with flatmates or partners who search together. The shared page shows the product name and a link to start a search.
- Do they become customers?
- Flatmates and partners are also hunters, so they could become paying users. Test how many shared links lead to a new signup and then a paid plan.
- First customers
- Renters searching in Berlin, in one city and one price band, who are already checking several listing sites every day.
- Where to reach them
- City housing groups: Offer free alerts in local renter and expat groups on social media and forums.
- University housing boards: Reach incoming students who need a room or flat fast, around semester starts.
- Search content: Write guides on finding a flat in Berlin that lead to the free tier.
- First milestone
- Fifty free users in Berlin and ten of them paying for Hunter within two months.
Why people already pay for this
- VerifiedGitHub repository gained 1565 stars in 3191 days
- Public claimThe tool automates searching multiple European real estate platforms and delivers results via multiple notification channels, indicating users struggle with manual checking across platforms.
- AI inferenceThe repository has 1565 stars and 239 forks, demonstrating significant user adoption and demand for automated real estate monitoring.
- Public claimThe tool exists to help users focus on other priorities rather than constantly monitoring listings, indicating time burden is a key pain point.
Tech stack
Every proposal builds on the same PWA base, installable from the browser on any phone or computer. Dashed boxes are what this app adds.
- AppNext.js and TypeScript
- PWAManifest and service worker
- UITailwind CSS
- Data and authSupabase Postgres
- PaymentsStripe
- EmailResend
- HostingVercel
- This app · Listing collectionScheduled scraping workers with proxiesNew listings must be fetched often from several sites, which Vercel functions alone handle poorly.
- This app · Push and chat deliveryWeb Push plus a chat bot APIInstant alerts need push and chat channels beyond email.
RisksAI inference
- PlatformListing sites may block scraping or forbid it in their terms, which could cut off the main data source.
- RegulatoryCollecting listing data across several countries raises terms-of-use and database-rights questions to check with a lawyer.
- CommercialUsers stop paying once they find a flat, so retention is short and revenue depends on steady new signups.
- TechnicalAlerts are only useful if fast; polling many sites at short intervals is costly and breaks when pages change.
- CommercialA free open-source tool exists, so users may prefer to self-host instead of paying.
Everything marked AI proposal or AI inference was written by a model from the evidence on the opportunity page. The proposed name must be checked against trademark registers before it is used.