Explore Successful Businesses

Problems

99 of some of the most painful, in-demand problems in a database for you to check out. How do people spot problems worth solving? What does a “good problem” look like? Can you solve a good problem in the wrong way? How do they know what’s the right solution to build?

Ask the data real businesses · real revenue · cited

Matching your filters

3 businesses

67% founder-reported, the rest researched

<$10K

$10K+

$50K+

$100K+

$1M+

Median revenue

$50K /mo

Middle half earn $1K – $3M/mo

How they grow

Business models

Showing 3 case studies

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Built With

Appointment alert service

"SMS alerts for fast Global Entry interviews."

globalentryalerts.com

$1K /mo Reported

Keto weight loss coaching

Thyroid-focused keto coaching for women's weight loss.

ketogirlnutritionist.com

$50K /mo Reported

Fastest email experience ever

AI-enhanced email client for ultra-productive professionals.

superhuman.com

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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.
Appointment alert service globalentryalerts.com "SMS alerts for fast Global Entry interviews."	$1K /mo Reported	One time payment	Word of mouth SEO +1	Travelers in the United... +3	+2	Founded 2022 · Solo founder · $10 to start	76	Build this
Keto weight loss coaching ketogirlnutritionist.com Thyroid-focused keto coaching for women's weight loss.	$50K /mo Reported	Group coaching +7	Direct sales Organic social media +1	Women With Thyroid Diso... +11	CO	Founded 2019 · Solo founder · $300 to start	71	Build this
Fastest email experience ever superhuman.com AI-enhanced email client for ultra-productive professionals.	—	Subscription +2	Referral Program Brand Authenticity +1	High-volume Email Users +13	LO +3	Founded 2014 · 130 people · $200K to start	64	Build this

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