Idea

Apps So Simple

Apps So Simple Yet So Profitable

Ask the data real businesses · real revenue · cited

Matching your filters

4 businesses

75% founder-reported, the rest researched

<$10K

$10K+

$50K+

$100K+

$1M+

Median revenue

$80K /mo

Middle half earn $10K – $80K/mo

How they grow

Business models

Showing 4 case studies

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Built With

Wifi marketing for rentals

WiFi marketing for short-term rental operators.

stayfi.com

$80K /mo Reported

Private chat rooms for founders

Private chat rooms for startup founders.

mapped.rocks

—

Stoic-inspired graphic apparel

"Stoic-inspired art on graphic tees and stickers."

etsy.com

$10K /mo Reported

Job board for four-day week

"Job board for flexible 4-day week roles."

4dayweek.io

—

Idea	Revenue	Model	Growth	Customers	Tools	Details	Solo score A 0–100 estimate of how well-suited a business is to being run solo (or very lean). It blends team leanness, business model, growth channels, capital intensity, revenue per operator, tooling leverage and recency into one score. Higher = more solopreneur-friendly.
Wifi marketing for rentals stayfi.com WiFi marketing for short-term rental operators.	$80K /mo Reported	Lead Generation +5	Affiliate program Word of mouth +1	Professional Short-term... +4	ST +3	Founded 2019 · 6 people · $200K to start	65	Build this
Private chat rooms for founders mapped.rocks Private chat rooms for startup founders.	—	Subscription +1	Email marketing Organic social media	Early-stage startup fou... +4	PR	Founded 2020 · 2 people · Built in 190 days	87	Build this
Stoic-inspired graphic apparel etsy.com "Stoic-inspired art on graphic tees and stickers."	$10K /mo Reported	E Commerce +3	Word of mouth Direct sales +1	Digital Nomads +2	+8	Founded 2020 · Solo founder · Built in 1 day	63	Build this
Job board for four-day week 4dayweek.io "Job board for flexible 4-day week roles."	—	Marketplaces & Platforms +1	Word of mouth SEO +1	Job Seekers Interested ... +4	TH TE +5	Founded 2020 · Solo founder · Built in 2 days	81	Build this

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Idea	Revenue
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