Idea

Apps So Simple

Apps So Simple Yet So Profitable

Ask the data real businesses · real revenue · cited

Matching your filters

6 businesses

50% founder-reported, the rest researched

<$10K

$10K+

$50K+

$100K+

$1M+

Median revenue

$10K /mo

Middle half earn $4K – $50K/mo

How they grow

Business models

Showing 6 case studies

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Built With

Video summarization tool

AI tool summarizing YouTube videos for quick insights.

eightify.app

—

Customizable task management app

Gamified, subscription-free mobile task management app.

finaletodo.com

$4K /mo Reported

Productivity progress tracker

Taskbar app visualizing your day and year progress.

progressbarwindows.com

—

Email unsubscribe management tool

"Tool to easily unsubscribe from unwanted emails."

leavemealone.com

$10K /mo Reported

Your ai-powered second brain

**Supermemory AI**: "ChatGPT-powered organizer for your bookmarks."

supermemory.ai

—

Journaling and self-discovery app

'Journaling app for personal growth seekers'

clearful.com

—

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.
Video summarization tool eightify.app AI tool summarizing YouTube videos for quick insights.	—	Productivity	Word of mouth Organic social media	Professionals +2	+4	Founded 2022 · 3 people · $20K to start	76	Build this
Customizable task management app finaletodo.com Gamified, subscription-free mobile task management app.	$4K /mo Reported	One time payment +1	Affiliate program Advertising on social media +1	Students +2	FI +15	Founded 2022 · 2 people · Built in 90 days	70	Build this
P Productivity progress tracker progressbarwindows.com Taskbar app visualizing your day and year progress.	—	One-time purchase	Advertising on social media SEO	Windows Users Seeking P... +4	+3	Founded 2021 · Solo founder · Built in 28 days	77	Build this
Email unsubscribe management tool leavemealone.com "Tool to easily unsubscribe from unwanted emails."	$10K /mo Reported	One-time purchase +4	Word of mouth Referral Program +1	Digital Nomads +5	+22	Founded 2018 · 2 co-founders · $1K to start	79	Build this
SA Your ai-powered second brain supermemory.ai Supermemory AI: "ChatGPT-powered organizer for your bookmarks."	—	SaaS	SEO Organic social media	Knowledge Workers +2	NE	Founded 2024 · 2 co-founders · Built in 3 days	71	Build this
Journaling and self-discovery app clearful.com 'Journaling app for personal growth seekers'	—	Coaching	SEO Organic social media	Individuals +2		Founded 2020 · 2 co-founders · Vancouver, BC, Canada, Canada	65	Build this

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