App ideas and inspiration

Stuck on what to build? These categories consistently perform on the App Store, and each fits in a single Zzz prompt. Paste one, then make it yours.

Habit and streak trackers

The evergreen. Simple loop, daily opens, natural subscriptions.

A habit tracker where I check off my habits each day, see my streak with a flame, and get a gentle reminder in the evening. Clean style, big numbers.

Health and self-quantification

Photo-based calorie apps proved people pay for effortless tracking.

An app where I photograph my meal and log it in two taps: name, estimated calories, time. Weekly summary with a simple chart. Clean, white, like Cal AI.

Sleep, focus and calm

Soft design, strong retention, ideal for the Soft or Glassy styles.

A wind-down app: a 5-minute evening routine with breathing, gratitude note and phone-down reminder. Soft pastel style, rounded cards, calm tone.

Niche coaching

Pick one audience and speak only to them: runners, new dads, guitar learners, van lifers.

A daily coach for new runners: a 8-week walk-to-run plan, one session per day, audio-style cues written on screen, progress ring. Dark and editorial.

Micro-journals

One entry a day, one emotion, one photo. Tiny scope, deep attachment.

A one-line journal: each day I write a single sentence and pick a mood. Calendar view of moods by color. Minimal style, perfect typography.

Quizzes and learning

Playful style shines here; streaks and levels do the retention work.

A quiz app about football history: 10 questions a day, levels, streak, share your score. Playful like Duolingo, chunky buttons.

Good to know

• The best niches sound too small: "for climbers who train at home" beats "for athletes".
• Browse the App Store’s top charts in one category and ask: what would the simpler, prettier version look like? Build that.