Edition of October 26, 2026Use cases · with prompt · with sourcePTEN

Home / Productivity

Productivity · Tabnews · 🇧🇷 Brazil

Running an offline AI assistant on your iPhone

A dev built Anvil, which runs models on the device for use on a plane, on the subway or without roaming.

Profession
Developer, Traveler
Tools
Gemma, Core ML
Source
tabnews.com.br ↗
Country
🇧🇷 Brazil
Report date
October 24, 2026
Verified on
October 24, 2026
Illustrative photo: Tourism sector

What they did

Built an app that chats, reads photos and translates signs and menus without internet.

How it went

The account gives no numbers.

Good to know

On-device AI avoids sending documents and photos to servers (good for LGPD compliance).

The prompt

Translate this sign/menu [photo or text] into English and explain any local terms a tourist might not understand.

Replace what is in [brackets]. Prompt written by us from the account, not a literal copy of the source. Do not paste other people’s personal data (privacy laws such as LGPD and GDPR apply).

Summary in our own words. Results as stated in the original account; we have not tested or audited them. Read the source ↗ Found a mistake?

Illustrative photo: Tourism sector01
Productivity🌐 International

Agent rebooks the connection while the passenger is still in the air

With the flight delayed, the agent talked to three airlines at once and got a new route at no cost.

TravelerOpenAI Dots
X · via agentusecases.aiSee prompt →
Illustrative photo: Tourism sector02
Productivity🇺🇸 United States

Japan trip reservations, negotiated in Japanese

The agent booked all the restaurants and chatted in Japanese with the Hakone hotel to get a dinner slot not listed on the site.

TravelerMeta Muse
X · via agentusecases.aiSee prompt →
Illustrative photo: Tourism sector03
Productivity🌐 International

Booking an airport hotel with clear rules

The author limited the agent to Booking.com, used the site's own filter names and set tiebreaker criteria.

TravelerChatGPT Agent
Blog · via agentusecases.aiSee prompt →
Illustrative photo: Tourism sector04
Productivity🌐 International

Comparing hotels in Lisbon across three different weeks

The browser opened Booking, Hotels.com, Expedia and Hyatt and kept a side-panel table of options up to US$220 a night.

TravelerGeminiChrome
Blog · via agentusecases.aiSee prompt →
Illustrative photo: Services/Technology sector05
Productivity🇧🇷 Brazil

When your AI limit runs out in the middle of the day

A dev running four subagents across four repositories ran out of tokens and reflected on their dependence on AI.

DeveloperClaude CodeGemini
TabnewsSee prompt →
Illustrative photo: Services/Technology sector06
Productivity🇧🇷 Brazil

Estimating how long your AI plan will last before it runs out

A dev published an open calculation to estimate how many tokens fit into the Pro/Max plans.

DeveloperClaude CodeCodex
TabnewsSee prompt →
Illustrative photo: Services/Technology sector07
Productivity🇧🇷 Brazil

Building a "thinking system" with Obsidian and Claude

A developer started recording what he learns in Obsidian and using Claude to connect notes.

DeveloperStudentObsidianClaude
TabnewsSee prompt →
Illustrative photo: Services/Technology sector08
Productivity🇧🇷 Brazil

Sending AI summaries and research straight to your Kindle

A developer built a Go MCP in minutes that lets Claude or Codex send texts to a Kindle.

DeveloperReaderClaudeCodex
TabnewsSee prompt →

The newsletter · Caderno de IA

As 5 da semana

5 AI use cases with prompts, every Tuesday in your inbox. Free, with sources. The newsletter is written in Portuguese.

No spam. Unsubscribe anytime.

We use your email only to send the newsletter. See the privacy policy.