--- title: Medium | daily.dev description: A solo developer shares the story of building Yuki, a free all-in-one dog training and health tracker app available on iOS and Android. Frustrated by... canonical: https://daily.dev/posts/medium-qsodsqaef twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Medium | daily.dev og:description: A solo developer shares the story of building Yuki, a free all-in-one dog training and health tracker app available on iOS and Android. Frustrated by... og:url: https://daily.dev/posts/medium-qsodsqaef og:image: https://api.daily.dev/og/posts/qSoDSQaEF.png og:image:alt: Medium og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Medium **[Medium](https://daily.dev/sources/medium_js)** · 6 min read · 1 upvotes · 0 comments ## Summary A solo developer shares the story of building Yuki, a free all-in-one dog training and health tracker app available on iOS and Android. Frustrated by fragmented, subscription-heavy dog apps, the author combined GPS walk tracking, training progress, health records, nutrition logging, barcode scanning, expense tracking, and family sharing into a single free app supporting 26 languages. The post covers product decisions shaped by solo development constraints, challenges like GPS accuracy, acquiring first users, multi-language support overhead, and the reality that marketing consumed roughly 40% of total effort. The app is ad-supported with a one-time payment to remove ads, deliberately avoiding subscriptions. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#mobile](https://daily.dev/tags/mobile) [View this post on daily.dev](https://daily.dev/posts/medium-qsodsqaef) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Medium","url":"https://daily.dev/posts/medium-qsodsqaef","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/medium-qsodsqaef"},"datePublished":"2026-07-27T19:33:07.575Z","dateModified":"2026-07-27T19:41:02.580Z","description":"A solo developer shares the story of building Yuki, a free all-in-one dog training and health tracker app available on iOS and Android. Frustrated by...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/5ce6596bd60e3c60cdddcd6eebe848d7?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/5ce6596bd60e3c60cdddcd6eebe848d7?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Medium","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Medium","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/medium","url":"https://daily.dev/sources/medium_js"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/medium-qsodsqaef","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"mobile","timeRequired":"PT6M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Medium","item":"https://daily.dev/sources/medium_js"},{"@type":"ListItem","position":3,"name":"Medium"}]} ```