IUS - Tesis y Leyes de México

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About this app

Mexico's complete and up-to-date legal library: all the jurisprudence of the Supreme Court of Justice of the Nation (SCJN) and federal and state laws, with a Research Assistant that answers questions citing its sources.

Since 2012, thousands of lawyers have used IUS to find the exact ruling in seconds. Today, it's a completely new application, rewritten from the ground up.

THE COMPLETE CORPUS
• 262,099 theses and jurisprudence from the Judicial Weekly of the Federation, from the Fifth to the Twelfth Epoch
• 6,222 federal and state laws with their amendment history
• 486,126 indexed articles linked to the theses that interpret them
• ​​Judgments, rulings, and agreements, all interconnected
• Continuous updates as the SCJN publishes its rulings

IUS ASSISTANT: AI WITH SOURCES
Ask a colleague in Spanish: "Who must prove the dismissal of a pregnant employee?" The Assistant searches the corpus, writes the response, and cites each statement. You tap the quote and open the thesis or article. If the sources are insufficient, it tells you instead of making them up. AI-generated content: verify sources before citing.

RESEARCH FASTER
• Search that understands concepts, not just exact words (with or without accents)
• Filters by subject, period, court, year, and type
• Smart summary of theses and rulings: criteria, facts, and relevance in seconds
• Every reference within a document is navigable: from the thesis to the article, and from the article to the theses that cite it

YOUR PRACTICE, ORGANIZED
• Folders by case file, saved files, and private notes
• Alerts: we notify you when the Court publishes theses on the topics you follow
• Articles linked to the current reform or fixed to a specific reform
• Careful typographical reading, designed for reading law

IUS ACCESS
Single subscription, no tiers: $149 MXN per month or $999 MXN per year with a 7-day free trial. The price may vary depending on the region and is always displayed before confirmation. Your subscription will automatically renew unless you cancel it at least 24 hours before the end of the current period through your account settings in the store.

IUS is a research tool; it does not constitute legal advice and does not replace professional judgment. Official publications are the only ones with legal standing.

Terms and conditions: https://buscaius.com/legal
Privacy notice: https://buscaius.com/legal#privacidad
Support: support@buscaius.com
Jurisprudence of the SCJN and laws of Mexico, with AI Assistant that cites sources.
Updated on
Jul 20, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info, App activity and 2 others
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

IUS renace: la aplicación fue reescrita desde cero.
· Nuevo Asistente IUS: pregunta en español y responde citando tesis y leyes reales; toca la cita para abrir la fuente.
· Búsqueda por conceptos, con o sin acentos.
· Resumen inteligente de tesis y sentencias.
· 6,222 leyes federales y estatales con reformas, ligadas a sus tesis.
· Alertas de nuevas tesis sobre tus temas.
· Nuevo diseño editorial, más rápido y claro.
Oferta de Mes del Abogado en la app hasta el 31 de julio.
Content rating
Everyone
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App support

About the developer
Francisco Javier Vera Gomez
hi@franciscovg.com
49 A Sur 4923 Estrella del Sur 72190 Puebla, Pue. Mexico