Alt Text Intelligence
Productividad
Gratis · Diseñada para iPad. No verificada para macOS.
Alt Text Intelligence composes alt text from photos using only your device.
The deterministic composer reads each image with the system Vision framework (labels, recognized text, animals, faces, saliency, dominant color) and writes a short, factual description. It never invents details beyond what was detected. Length presets range from a brief 150 characters to a detailed 1200, plus the platform ceilings of Bluesky, Mastodon, X, LinkedIn, and Instagram.
THREE WAYS TO USE IT
• Open Alt Text Intelligence, pick a photo, get a description.
• Share a photo from any app; the Alt Text Intelligence Share Extension drops a description into your clipboard.
• Long-press a photo in the Photos app and choose Alt Text Intelligence to describe it without leaving Photos.
Export your descriptions in the Bluesky Alt Text Dataset format (the same 279,173-row open dataset published by the author) for downstream use, citation, or fine-tuning.
A PLAYGROUND FOR THE ON-DEVICE STACK
Beyond alt text, Alt Text Intelligence ships a chat surface for the system language model with a small, growing tool catalog. The model is text-only at the prompt layer; the chat lets you watch it call tools that reach things prompts can't:
• vision_recon: reads an image you attached using the Vision framework and returns labels, OCR text, animals, face count, saliency, and dominant color.
• regex_match: applies a regular expression to a string and returns matches and capture groups.
More tools (Wikipedia summary, weather, generic web fetch) are queued for future updates. When they ship, each network call surfaces a "uses internet" indicator so you always see which tool reached out.
PRIVACY POSTURE
• The on-device language model never leaves your device.
• The deterministic alt-text composer runs fully on device.
• No accounts, no telemetry, no tracking.
• Today's build requests no network entitlements at all.
• Future network tools, when added, are scoped per call and clearly indicated.
• The Privacy Manifest declares no data collected, no tracking domains.
ACCESSIBILITY
• Atkinson Hyperlegible font option.
• Dynamic Type and VoiceOver supported across surfaces.
• W3C WAI rule citations link back to the source.
WHO IT'S FOR
The deterministic alt-text composer is for accessibility advocates, social-media posters who want WAI-compliant descriptions without sending images to a server, and developers building offline accessibility tooling. The chat-with-tools playground is for curious users and developers who want to feel the shape of the on-device CV + language model stack.
ABOUT
Alt Text Intelligence is built by Luke Steuber (Bridge City Lab LLC), speech-language pathologist and indie iOS developer. It's the iOS sibling of the Bluesky Alt Text Dataset and dr.eamer.dev/alt/.
OPEN-SOURCE NOTICES
• Atkinson Hyperlegible © 2020 Braille Institute of America, Inc., licensed under the SIL Open Font License 1.1.
• WAI / W3C accessibility guidance is paraphrased and cited.
• System Vision and on-device language model APIs are provided by Apple under the Apple Developer Program License Agreement.
NOT INCLUDED
This is not a multimodal chat client. The on-device language model is text-only at the prompt layer; image awareness comes from tools the model calls, not from passing pixels directly. Expect terse, factual alt text; the deterministic composer never invents details.
Calificaciones y reseñas
- Esta app no ha recibido suficientes calificaciones ni reseñas para mostrar un resumen.
El desarrollador (LanguageCraft) indicó que las prácticas de privacidad de la app pueden incluir el manejo de datos que se describe a continuación. Para obtener más detalles, consulta la política de privacidad del desarrollador .
No se recopilan datos
El desarrollador no recopila ningún dato en esta app.
Accesibilidad
El desarrollador aún no ha indicado cuáles funciones de accesibilidad admite esta app. Obtén detalles
Ficha técnica
- Vendedor
- Bridge City Lab LLC
- Tamaño
- 4.1 MB
- Categoría
- Productividad
- Compatibilidad
Requiere iOS 17.0 o posterior.
- iPhone
Requiere iOS 17.0 o posterior. - iPad
Requiere iPadOS 17.0 o posterior. - Mac
Requiere macOS 14.0 o posterior y una Mac con el chip M1 de Apple o posterior. - Apple Vision
Requiere visionOS 1.0 o posterior.
- iPhone
- Idiomas
- Inglés
- Edad
4+
- 4+
- Copyright
- © 2026 Bridge City Lab LLC