See how great apps are built.
Screens, design, tech stack and release history for the apps worth studying. Ready for your agent.
App of the week
ChatGPT
A tracked app with store screens and a public version.
OpenAI OpCo, LLC
This week in apps
Week 43, 2026, 19 to 25 Oct 2026. Rank moves across 175 countries, new versions and SDK changes.
- #3


Tech stack · Discord - Talk, Play, Hang Out iOS
Added hermesvm. Removed FlashList, hermes, Lodash, Moment.js and 2 more. Compared with 331.0.
- v1.2026.286

- +66

- +0.16
- #8

Just added
The newest apps in the catalog, with the stack we found in their public store build.
GitHubGitHub · iOSSwiftUI65 SDKsv1.282.0
Lensa AI: Photo EditorPrisma labs, inc. · iOSSwiftUI68 SDKsv8.13.0
Picsart AI Photo Editor, VideoPicsArt, Inc. · iOSSwiftUI47 SDKsv30.9.2
Remini - AI Photo EnhancerBending Spoons Apps ApS · iOSSwiftUI87 SDKsv2.10.221
Photoroom: AI Photo EditorPhotoroom · iOSSwiftUI92 SDKsv2026.43.01Photoroom: AI Photo EditorPhotoroom AI Photo Editor · AndroidJetpack Compose37 SDKsv2026.43.04
Speechify – Text to Speech PDFSpeechify Inc. · iOSReact Native103 SDKsv5.5.17Le Chat by Mistral AIMistral AI · AndroidReact Native34 SDKsv2.16.0
Screens
In-app screens from recent capture runs.
Terms consentKimi · Moonshot AI
Home (signed out)Kimi · Moonshot AI
WelcomeMeta AI · Meta Platforms, Inc.
New chatMeta AI · Meta Platforms, Inc.
WelcomeDuolingo: Learn Languages · Duolingo
IntroDuolingo: Learn Languages · Duolingo
Welcome and sign inDeepSeek - AI Assistant · 杭州深度求索人工智能基础技术研究有限公司
IntroDeepSeek - AI Assistant · 杭州深度求索人工智能基础技术研究有限公司
Welcome and sign inClaude by Anthropic · Anthropic PBC
New chatClaude by Anthropic · Anthropic PBCBuilt with
SDKs and frameworks in the latest analysed build. Counts are apps, not installs.
What shipped
Public store versions, newest first.
How AI apps are built
Assistants and generative apps, ordered by their current US chart rank, with the stack in their public build.
ChatGPTOpenAI OpCo, LLC · AndroidJetpack Compose36 SDKsv1.2026.286
ChatGPTOpenAI OpCo, LLC · iOSSwiftUI28 SDKsv1.2026.286
Claude by AnthropicAnthropic PBC · iOSSwiftUI43 SDKsv1.261021.20
Google GeminiGoogle · iOSSwiftUI10 SDKsv1.2026.4171302
Grok - AI Chat & VideoX Corp. · iOSSwiftUI47 SDKsv1.4.58Grok BotSpaceX Super Intelligence · AndroidReact Native20 SDKsv1.5.0
Grok - AI Chat & VideoSpaceX Super Intelligence · AndroidJetpack Compose37 SDKsv1.1.78-release.02
Grok BotX Corp. · iOSReact Native18 SDKsv1.0.0
Who ranks where
The top free iPhone app in each big market, or the best-placed app we track there, from the latest App Store charts.
Vinted: Pre-loved marketplace#1 in United States
ASDA#1 in United Kingdom
AI Cleaner Storage Cleanup#1 in India
Muse from Meta#1 in Japan
抖音商城-下单返积分、退货包运费#1 in China
네이버플러스 스토어#1 in South Korea
Claude by Anthropic#1 in Germany
Disney+#1 in France
e-Título#1 in Brazil
BlinkDrama - Dramas y series#1 in Mexico
UC Browser#1 in Indonesia
Q | كيو#1 in Saudi Arabia
Charts
Tracked apps and their latest rank on the US top free chart.
iPhone
App Store chartsAndroid
Google Play chartsFor agents
Connect your agent
Remote MCP at /api/mcp. Send a Bearer key that starts with tdn_. The same key works on the public API.
mcp.json
{
"mcpServers": {
"techdevnotes": {
"url": "https://techdevnotes.com/api/mcp",
"headers": {
"Authorization": "Bearer tdn_YOUR_KEY"
}
}
}
}- search_apps
- get_app
- get_screenshots
- search_screens
- get_design_tokens
- get_tech_stack
- sdk_adoption
- get_version_history
- get_rankings
- compare_apps
Notes
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