Utility iPhone / iOS apps
Build small paid or ad-supported utility iOS apps (calculators, scanners, QR tools) on a portfolio basis, monetized via App Store sales and ads.
The idea, in plain language
Build small paid or ad-supported utility iOS apps (calculators, scanners, QR tools, single-purpose widgets) on a portfolio basis and monetise via App Store sales. The videos share four repeatable proof points: Tom's $55K/month single widget built in about a year with 100% bootstrapped spend; Jake Glacer's $50K/month simplest app in four months; Blake Anderson's three AI iPhone apps earning over $10M combined; Sarah's Stella at $340K/month in 60 days; Steven Cravotta's $40K/month viral app; Will Baker's $10K/month 'lazy founder' portfolio with paid ads; Jay's nomadtable at $140K/month; Cal AI co-founders selling their calorie tracker for millions. Startup capital is essentially an Apple developer account plus ad spend; the customer is a mobile user with one specific painful problem. Quoted numbers are the proof: $50K/month widgets, $140K/month nomadtable, $340K/month Stella, $10M with three apps, $40K/month viral hit.
Where the sources agree
- Single-purpose beats platform — every breakout app in this batch (Cal AI, nomadtable, Puffcount, Stella, Pushscroll) solves one painful problem and nothing else.
- Marketing from day one is the wedge — Glacer, Baker and Sarah all frame the build as a marketing problem, not an engineering problem; AppFigures, ASO and paid ads are cited by name.
- iOS distribution is the moat — the App Store search ad, the keyword layer and the lock-screen widget are recurring unfair advantages the videos keep coming back to.
- Year-of-iOS cadence compounds — Blake Anderson's 'year of iOS' framing, Tom's single widget in 12 months and Jake's four-month-from-zero story all argue one win funds the next attempt.
- Build the simplest possible thing — every founder stresses that their breakout app started as a weekend prototype with no engineering team, often in SwiftUI or Replit.
Where they differ
- Starter Story dominates with nine of the thirteen episodes; MFM contributes two (Dumb iPhone Apps, Viral App), Greg Isenberg contributes two (Jason Fried's Scratch-off/Shower Door ideas, Late Checkout's six ideas for 2024). Koerner Office contributes one — Chris's Replit/OnlyWaivers build in 85 minutes — that explicitly says the lesson generalises to web apps too.
- Founder archetype differs — students and 20-somethings (Benjamin Chen, Sarah, Blake, the Cal AI co-founders) vs experienced devs (Jay from big tech, Tom's widget, Steven Cravotta) vs operators treating iOS as a marketing channel (Will Baker's paid-ads playbook).
- Monetisation differs — subscription (Cal AI, nomadtable), one-time purchase (Puffcount, Pushscroll), ads (Baker's paid-ads-to-simple-app), in-app purchase (Stella), B2B video (one of Pat Walls' named apps) — the same 'simple utility' sells in five different shapes.
- Some videos pitch iOS-only (Blake, Tom, Glacer), others pitch iOS-as-mobile-distribution for any idea (Sarah's viral playbook, Baker's 'marketing from day one') — the platform is the wedge for some, the product surface for others.
- The Chris-only Koerner episode argues the lesson generalises to web apps and Replit builds; Late Checkout pitches iOS-shaped ideas (Locket-style lock-screen widget, Apple Vision Pro bars). The batch leans mobile-first but is not exclusively iOS.
What each source says
KoernerWatch Me Build an App With AI and Make a Sale in 85 Minutes
Solo Replit build of OnlyWaivers around a problem from Chris's church — building, Stripe payments, Facebook ads, Reddit promotion and the first paying customer in 85 minutes.
Watch on YouTubeStarter StoryI Make $50K/Month From This One Widget
Tom built a single tiny widget solving one painful problem, launched it about a year ago and it now makes $55K/month — 100% bootstrapped, with a focus on spotting a real problem and the simplest possible solution.
Watch on YouTubeside-hustle-school#461 - EMT Moonlights as App Builder, Earns $15,000 a Month
The episode follows an EMT who builds iPhone apps on the side, landing contracts with BuzzFeed and UMass and earning about $15,000 a month. It covers freelancing iOS app builds for clients.
Listen on Side Hustle Schoolside-hustle-school#738 - iPhone “Progress App” Weighs in with Measurable Profits
Side Hustle School profiles a UK bank employee who launched a weight-tracking iPhone app three years after entering the space, growing it into full-time income while travelling, with no revenue figures shared.
Listen on Side Hustle SchoolStarter StoryThis Insanely Simple App Makes $50K/Month
Jake Glacer built one of the simplest apps in the channel's history, which hit $50K/month in four months by finding a viral idea and marketing from day one — covers growth/marketing including deal structure and tracking.
Watch on YouTubeStarter StoryHe Made $10M with 3 iPhone Apps
Blake Anderson built three AI iPhone apps that earned over $10M combined — 'year of iOS apps' framing, idea-finding cadence, validation process, tools, marketing, monetisation and profit margins.
Watch on YouTubeMFMDumb iPhone Apps Are Making People Rich Again (Here’s how)
Pat Walls (founder of Starter Story) dissects why simple iPhone apps are printing money — Pushscroll, Puffcount, 5-0 Scanner, Cal.ai and B2B Video — and frames the moment as a return to 'dumb iPhone apps'.
Watch on YouTubeStarter StoryShe Built This $340K/Month App in 60 Days
Sarah built Stella, an iOS app that hit $340K/month in just 60 days — the start of a 'next wave' where building apps is trivially easy and distribution/virality decides winners.
Watch on YouTubeStarter StoryHow I Work: $140K/Month App Developer
Jay (former software engineer) built nomadtable — a mobile app for digital nomads — to $140K/month revenue, with a day-in-the-life look at morning routine, iOS idea generation, building apps while traveling and afternoon coding.
Watch on YouTubeStarter StoryThe Lazy Method: How I Build $10K/Month Apps
Will Baker calls himself 'the laziest founder' on the channel — he built apps that together make $10K/month with no TikTok army, no UGC, no build-in-public, just paid-ads-to-simple-app.
Watch on YouTubeStarter StoryHow I Built It: $40K/Month iPhone App
Steven Cravotta built a viral iPhone app to over $40K/month — founder profile with chapters on founder background, building/validating the app, organic marketing, monetisation, pricing and onboarding.
Watch on YouTubeMFMHow To Build A Viral App & Make Millions From It (#379)
Brainstorming on hostile-takeover of 'Sara's List' plus Nikita Bier on how he built GAS — at the time the #1 app — and reverse-engineering the viral-app playbook.
Watch on YouTubeIsenbergThe ultimate guide to product building with the man who changed software
Jason Fried (37signals) on innovative product ideas — a 'Scratch-off Ad' app (scratch a full-screen ad with your finger, blow into the mic to clear 'dust'), a 'Shower Door Sketch' app (drawing on steamy glass with ambient sound) and the broader 'new idea' thesis.
Watch on YouTubeStarter StoryI Spent 24 Hours With iOS Millionaires
Pat spends 24 hours with the co-founders of Cal AI — numbers behind the app, what it was like building a company with friends, the experience of selling the calorie tracker for millions.
Watch on YouTubeIsenbergSteal These 6 Startup Ideas For 2024 | Theo Tabah & Jordan Mix
Theo Tabah and Jordan Mix (Late Checkout) pitch six startup ideas for 2024 — Locket for creators (lock-screen widget for fan engagement), Apple Vision Pro bars (a subscription bar pass), a multi-industry fitness product, neighbourhood apps and a few more.
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