--- title: I Built a Polyamory App With No Backend, No Accounts,... description: A solo developer built a relationship tracker for polyamorous users with zero backend, no accounts, and no analytics — by design. The post walks through the... canonical: https://daily.dev/posts/i-built-a-polyamory-app-with-no-backend-no-accounts-and-no-analytics-fgkx2bshz twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: I Built a Polyamory App With No Backend, No Accounts, and No Analytics | daily.dev og:description: A solo developer built a relationship tracker for polyamorous users with zero backend, no accounts, and no analytics — by design. The post walks through the... og:url: https://daily.dev/posts/i-built-a-polyamory-app-with-no-backend-no-accounts-and-no-analytics-fgkx2bshz og:image: https://api.daily.dev/og/posts/FgKx2bShz.png og:image:alt: I Built a Polyamory App With No Backend, No Accounts, and No Analytics 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. # I Built a Polyamory App With No Backend, No Accounts, and No Analytics **[Medium](https://daily.dev/sources/medium_js)** · 7 min read · 0 upvotes · 0 comments ## Summary A solo developer built a relationship tracker for polyamorous users with zero backend, no accounts, and no analytics — by design. The post walks through the threat model that drove the architecture (physical access, subpoenas, compromised developer infrastructure, third-party SDKs), the technical stack (SwiftUI, SwiftData, CloudKit private database, StoreKit 2 for on-device receipt validation), and the real trade-offs: no crash reporting, no A/B testing, no remote kill switch, and no way to recover lost user data. In exchange: zero server costs, near-trivial GDPR compliance, nothing to breach, and a genuine privacy differentiator in a category full of data brokers. The core argument is that architecture is a product claim — local-first only makes sense when the data is inherently personal and single-player. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Architecture Decisions Behind Building a Simple Personal Software Tool](https://daily.dev/posts/architecture-decisions-behind-building-a-simple-personal-software-tool-piwlyezw4) · DEV · 75 upvotes · 3 comments - [Medium](https://daily.dev/posts/medium-qsodsqaef) · Medium · 1 upvotes · 0 comments - [Write-Only Architecture in a Health App](https://daily.dev/posts/write-only-architecture-in-a-health-app-gbrivkg97) · Atomic Spin · 0 upvotes · 0 comments - [I keep finding vibe coded apps that leak user data, and I'm not even looking for it](https://daily.dev/posts/i-keep-finding-vibe-coded-apps-that-leak-user-data-and-i-m-not-even-looking-for-it-74ydqzotl) · XDA Developers · 4 upvotes · 0 comments - [Increasing Users' Data Agency: From BlueSky's AT Protocol to the Local-First Software Movement](https://daily.dev/posts/increasing-users-data-agency-from-bluesky-s-at-protocol-to-the-local-first-software-movement-gdelmv11w) · InfoQ · 0 upvotes · 0 comments --- Tags: [#ios](https://daily.dev/tags/ios), [#privacy](https://daily.dev/tags/privacy), [#swiftui](https://daily.dev/tags/swiftui), [#local-first](https://daily.dev/tags/local-first) [View this post on daily.dev](https://daily.dev/posts/i-built-a-polyamory-app-with-no-backend-no-accounts-and-no-analytics-fgkx2bshz) ```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":"I Built a Polyamory App With No Backend, No Accounts, and No Analytics","url":"https://daily.dev/posts/i-built-a-polyamory-app-with-no-backend-no-accounts-and-no-analytics-fgkx2bshz","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/i-built-a-polyamory-app-with-no-backend-no-accounts-and-no-analytics-fgkx2bshz"},"datePublished":"2026-07-25T21:57:23.159Z","dateModified":"2026-07-25T21:59:10.332Z","description":"A solo developer built a relationship tracker for polyamorous users with zero backend, no accounts, and no analytics — by design. 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