# appfield

> Mobile app development decoded — frameworks, teams, and the cost of shipping on iOS and Android.

Mobile-development reference: React Native vs Flutter vs Swift vs Kotlin, app-dev agencies by city, ASO tactics, cost benchmarks, and the how-to guides that turn a spec into a shipped build.

## Browse
- [React Native](https://appfield.dev/react-native)
- [Flutter](https://appfield.dev/flutter)
- [Native iOS](https://appfield.dev/native-ios)
- [Native Android](https://appfield.dev/native-android)
- [Expo](https://appfield.dev/expo)
- [Mobile backend](https://appfield.dev/backend)
- [Analytics](https://appfield.dev/analytics)
- [Push notifications](https://appfield.dev/push)
- [ASO + storefront](https://appfield.dev/aso)
- [Crash reporting](https://appfield.dev/crash-reporting)
- [In-app payments](https://appfield.dev/payments)

## Resources
- [Sitemap](https://appfield.dev/sitemap.xml): every indexable page on appfield.dev
- [RSS feed](https://appfield.dev/feed.xml): latest published pages
- [robots.txt](https://appfield.dev/robots.txt): crawl rules + Content-Signal preferences

## About
appfield covers mobile development tooling — frameworks, backends, analytics, ASO, monetization. Independent reviews from app teams who've actually shipped at scale.

## For agents
- This site permits AI training, AI input/grounding, and search indexing
  (robots.txt `Content-Signal: search=yes, ai-input=yes, ai-train=yes`).
- Request any page with the header `Accept: text/markdown` to receive a
  clean markdown rendering instead of HTML (responses carry
  `Content-Type: text/markdown` and `x-markdown-tokens`).