Idea

Apps So Simple

Apps So Simple Yet So Profitable

Ask the data real businesses · real revenue · cited

Matching your filters

7 businesses

100% founder-reported, the rest researched

<$10K

$10K+

$50K+

$100K+

$1M+

Median revenue

$20K /mo

Middle half earn $3K – $50K/mo

How they grow

Business models

Showing 7 case studies

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Built With

AI Excel formula generator

AI tool that generates Excel formulas instantly

betteranalyst.com

$30K /mo Reported

Done-for-you HARO link builder

Digital PR agency specializing in high-quality backlinks

linkifi.io

$50K /mo Reported

Early-stage startup lead service

Subscription service for B2B SaaS startup leads.

fuelblock.io

$3K /mo Reported

Pdf document generation API

PDF generation tool for non-coders.

craftmypdf.com

$20K /mo Reported

Business growth coaching program

Business coaching for sustainable growth and work-life balance.

jenniferdawncoaching.com

$100K /mo Reported

Ai-powered email outreach tool

AI-powered personalized email outreach for agency growth.

nureply.com

$4K /mo Reported

Prospecting email finder tool

B2B prospecting tool for agencies and sales pros.

hawkprospecting.com

$1K /mo Reported

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.
AI Excel formula generator betteranalyst.com AI tool that generates Excel formulas instantly	$30K /mo Reported	SaaS +2	Word of mouth Brand Authenticity +1	Finance Professionals +9	+8	Founded 2022 · Solo founder · $200 to start	87	Build this
Done-for-you HARO link builder linkifi.io Digital PR agency specializing in high-quality backlinks	$50K /mo Reported	Agency +3	Affiliate program Word of mouth +1	Ecommerce Sellers +10	VI +26	Founded 2022 · 6 people · $1K to start	66	Build this
Early-stage startup lead service fuelblock.io Subscription service for B2B SaaS startup leads.	$3K /mo Reported	Subscription +1	Direct sales Email marketing	Agency Owners +5	CO LE +15	Founded 2022 · Solo founder · $600 to start	79	Build this
Pdf document generation API craftmypdf.com PDF generation tool for non-coders.	$20K /mo Reported	Subscription +2	Word of mouth Advertising on social media +1	Citizen Developers +7	+24	Founded 2020 · Solo founder · $800 to start	83	Build this
Business growth coaching program jenniferdawncoaching.com Business coaching for sustainable growth and work-life balance.	$100K /mo Reported	Coaching +2	Word of mouth Direct sales +1	Entrepreneurs +3	+35	Founded 2014 · 10 people · $10K to start	68	Build this
Ai-powered email outreach tool nureply.com AI-powered personalized email outreach for agency growth.	$4K /mo Reported	SaaS +1	Word of mouth Direct sales +1	SaaS Business Owners +5		Founded 2022 · Solo founder · $200 to start	76	Build this
Prospecting email finder tool hawkprospecting.com B2B prospecting tool for agencies and sales pros.	$1K /mo Reported	SaaS +1	Direct sales Email marketing +1	Marketing Agencies +4	PR +17	Founded 2021 · Solo founder · Built in 24 days	72	Build this

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Idea	Revenue
Crm marketing attri...	$100K/mo
No-code Airtable AP...	$20K/mo
Pdf bank statement ...	$40K/mo
Ai music video gene...	$20K/mo