DIY AI Agent Achieves First Multi-App Task Using OCR and Task Memory

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A developer building a personal AI phone agent reached a key milestone on Day 15 of the project, successfully completing a cross-app task autonomously. The agent was instructed to read an account balance from a banking app and send it to a contact on WhatsApp, executing both steps without manual intervention. This was made possible by implementing a task memory system — a Python dictionary that stores values extracted from one app and passes them to the next. The developer used OCR to read banking app text and the Gemma 4 model to parse and plan task steps. Known issues remain, including unreliable OCR accuracy and inconsistent app-switching behavior, with a three-app workflow planned for the next development day.

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