Software and apps side hustle ideas
A web app, SaaS, mobile app, browser extension, bot or API that people pay for or that earns from ads.
64 ideas, page 1 of 2
- Software and appsAn iOS fitness app built to solve the founder's own problem at the gym. The founder had never shipped code before and grew it with content and a personal brand.$100 to $1kOnlineStarter Story, 2026
- Software and appsA mobile game built by a former big tech employee after leaving a full-time job. It grew with no paid marketing.OnlineStarter Story, 2026
- Software and appsThe operator runs a few near-identical sites that each sell access to a niche database, such as investors, angels or journalists. The revenue model is not stated in the source and is likely paid access.OnlineStarter Story, 2026
- Software and appsA micro-SaaS that replaces messy spreadsheets for agencies and e-commerce brands trying to make sense of their data. The founder spotted the problem while consulting for these businesses and built the app with Claude.OnlineStarter Story, 2026
- Software and appsAfter leaving an agency, the operator built a directory-related software tool that earns recurring revenue and is adding a lead-gen angle.OnlineNiche Pursuits Podcast, 2026
- Software and appsA members-only group charges a recurring or lifetime fee for access to a niche audience and its resources. The host promotes it from an existing audience.OnlineThe Koerner Office, 2025
- Software and appsSells middleware that lets developers access Airtable and Google Sheets data through GraphQL.OnlineHacker News, 2024
- Software and appsA free web tool for converting text case, built up over years.OnlineHacker News, 2024
- Software and appsA checklist app built for the owner's own routines that now earns recurring income.Hands-offOnlineHacker News, 2024
- Software and appsA random number service sold through a website and a cloud marketplace listing, left running with little attention.Hands-offOnlineHacker News, 2024
- Software and appsA GIF meme site that earns from one-off sales of watermark removal.Hands-offOnlineHacker News, 2024
- Software and appsRuns a subscription tool that converts PDF bank statements into CSV, used mostly by individuals, bookkeepers and small business owners.OnlineHacker News, 2024
- Software and appsCreated a web tool for making GIF memes with text that follows motion, after finding it hard to do elsewhere.Hands-offOnlineHacker News, 2022
- Software and appsA solitaire site that began as a Mac app, found by looking for popular apps with poor reviews, and now supports the owner.OnlineHacker News, 2022
- Software and appsA web app that pulls transaction data out of PDF bank statements, built after the owner needed it for personal spending analysis.OnlineHacker News, 2022
- Software and appsBuilt an embeddable analytics product that avoids cookies, sold as hosted subscriptions and to customers on invoice.OnlineHacker News, 2022
- Software and appsCreated an open-source email verification tool, then built a paid hosted service on top of it.OnlineHacker News, 2022
- Software and appsBuilt a monitoring tool that began with GraphQL services and expanded to all APIs and web apps, running it with a couple of hours of work each workday.Part-timeOnlineHacker News, 2022
- Software and appsBuilt a small tool that emails a weekly digest of newly saved Twitter bookmarks, with paid subscribers.Hands-offOnlineHacker News, 2022
- Software and appsA coupon site for developers plus a set of single-purpose web tools such as encoders and HTML cleaners.Hands-offOnlineHacker News, 2021
- Software and appsA tool for recording video explanations on pull requests, to reduce misunderstandings during code review.OnlineHacker News, 2021
- Software and appsA charting product for data maps, earning from subscriptions and from licensing its chart library.OnlineHacker News, 2019
- Software and appsRuns a subscription service that lets sites display announcement banners.Hands-offOnlineHacker News, 2019
- Software and appsSells a web service that randomly sends text reminders for kids to call their parents or for adults to call theirs.Hands-offOnlineHacker News, 2019
- Software and appsPublishes a few small utility apps on the App Store and keeps improving them. Income comes from app sales.$100 to $1kOnlineHacker News, 2018
- Software and appsProduces long, project-based video lessons on the Elixir language, with free videos on YouTube and premium content for paying subscribers.OnlineHacker News, 2018
- Software and appsRuns a site showing historical average weather by city and month. Income so far is from ad revenue, with plans to add more features.OnlineHacker News, 2016
- Software and appsBuilt a simple CMS and CRM for a freelance client and set up automated billing per user. Income grows as the client's user base grows.Hands-offOnlineHacker News, 2016
- Software and appsBuilt a tool that takes a keyword, translates it into many languages and shows available .com domains. It has earned some revenue from users.Hands-offOnlineHacker News, 2016
- Software and appsLets a couple of people use a personal instance of an open source program they run, so they do not have to host it themselves, in exchange for a small monthly fee.Hands-offOnlineHacker News, 2016
- Software and appsA lossless screen recording app for macOS sold through the Mac App Store and its own site. Adds features like animated GIF export to keep sales coming in.OnlineHacker News, 2016
- Software and appsA service where customers text a photo and a physical postcard is mailed. Built with a web framework and an SMS API, and paid per postcard.Hands-offOnlineHacker News, 2016
- Software and appsSells a watermarking tool, and also runs a multi-week video productivity course that is paid for each time a new class fills.OnlineHacker News, 2016
- Software and appsBuilt a set of web tools for converting between data formats like CSV. Income comes mostly from Google ads plus an occasional affiliate link.A few hours a weekOnlineHacker News, 2016
- Software and appsRuns a free tool that lets people make colored maps of countries and regions. Income comes from display ads and occasional donations.Hands-offOnlineHacker News, 2016
- Software and appsA paid RSS reader that is open source and runs on a managed cloud platform. Users pay a subscription handled through a payment processor, and it needs almost no ongoing effort.Hands-offOnlineHacker News, 2016
- Software and appsBuilds and sells many iPhone apps, with updates and freelance on the side.Hands-offOnlineHacker News, 2014
- Software and appsBuilt a minimalist wine catalog app for iPhone, sold as a paid app.Hands-offOnlineHacker News, 2014
- Software and appsBuilt a simple Android shopping app that earned from Amazon affiliate links and ads.Hands-offOnlineHacker News, 2014
- Software and appsA web app for sending and reading anonymous messages, with paid accounts adding extra features.Hands-offOnlineHacker News, 2014
- Software and appsBuilt an iPhone photo reminder app that Apple featured, earning without marketing spend.Hands-offOnlineHacker News, 2014
- Software and appsAn iPhone app that converts tracker activity to diet program points and offers calorie tracking, sold through the App Store.Hands-offOnlineHacker News, 2014
- Software and appsBuilds iPhone apps for groups like skydivers and beer fans, earning from sales and Apple affiliate links.OnlineHacker News, 2014
- Software and appsBuilt a website where people pay in Bitcoin per character to post a message.$100 to $1kHands-offOnlineHacker News, 2014
- Software and appsBuilt an iPad piano app that stays in music charts and sells without marketing.Hands-offOnlineHacker News, 2014
- Software and appsA web tool that tracks phones periodically and shows locations on a map, earning from site and YouTube ads.Hands-offOnlineHacker News, 2014
- Software and appsBuilt a puzzle game for iPhone that earns a tiny amount from sales.Hands-offOnlineHacker News, 2014
- Software and appsBuilt iPhone apps like an oscilloscope and spectrum analyzer, used by sound engineers and teachers.Hands-offOnlineHacker News, 2014