November 2026 Summaries

Oscar Leche created Samio, an offline, ad-free educational app for children aged 4 to 12, after his son’s language and reading difficulties made existing subscription- and advertising-based learning software unsuitable. Designed around spoken guidance, mastery-based progression rather than age, multilingual support, and a one-time purchase model, Samio grew from a family project into a product reaching the Netherlands App Store’s paid Education rankings and later expanded into a classroom platform used in several countries. Leche and his wife Olga jointly shaped the product, with Olga contributing testing, feedback, branding, and social efforts while he developed the software. Built with Expo, React Native, and a shared codebase, Samio supports separate children’s and school apps on iOS and Android as well as a web-based teacher dashboard, allowing a solo developer to maintain five product surfaces. Automated builds, submissions, testing, variant-aware development scripts, and local build workflows reduce operational overhead, while technical challenges included synchronizing pre-recorded multilingual audio, validating handwriting, building a gesture-based drawing studio, and ensuring offline functionality. Leche argues that cross-platform development, scripted release processes, and end-to-end testing enable individual developers to build and maintain sophisticated educational products.

Expo development can begin on an iPhone at no cost using Expo Go on Windows, Linux, or macOS, without any Apple account, although Expo Go is limited to its included native libraries and cannot support custom native code or certain features such as widgets, Live Activities, Siri integrations, and unsupported native modules. Developers with a Mac can create their own development builds using a free Apple Account and Xcode, enabling custom native code and Fast Refresh but imposing limits including seven-day app expiration, up to three apps per device, use only on personal devices, and no access to paid capabilities such as remote push notifications, in-app purchases, Sign in with Apple, NFC, iCloud, Apple Pay, or associated domains. The $99-per-year Apple Developer Program enables cloud signing for iOS device builds, wider testing through TestFlight or ad hoc distribution, App Store publication, remote push notifications, and paid Apple services, while also extending development-profile validity to up to one year. Developers should enroll immediately if they need paid capabilities, remote device testing without a Mac, or cloud-signed iPhone builds; otherwise, they can build for free first and join when they are ready to share or publish. Android development and build sharing remain free until Play Store publication, which requires a one-time $25 Google Play Console fee.