Productivity
AppBlock's screen-time blocks are easy to bypass
In 7 weeks you can make $4,200/month by building a harder-to-bypass screen-time blocker.
Fontmaker interrupts every few letters with a 90-second ad
In 7 weeks you can make $5,000/month by building a one-time-purchase handwriting font keyboard.
LastPass autofill breaks after years of data breaches
In 14 weeks you could make $1,800/month building a more reliable password manager, but the bar is unusually high.
Goodnotes' Android app is still a laggy web wrapper after 3 years
In 8 weeks you can make $6,800/month by building a native, offline-first Android S-Pen note app.
Gemini Notebook’s Android app is losing trust
In 14 weeks you can make $1,200/month by building a better source-grounded research notebook.
Notepad's ads make a basic notes app unusable, paying users included
In 3 weeks you can make $480/month by building a genuinely ad-free notes app (an app clone closing the existing market gap).
Easy Voice Recorder Pro is stable, loved, and barely worth challenging
In 5 weeks you'd likely cap out around $900/month cloning Easy Voice Recorder Pro (a mature utility whose fans have no real reason to switch).