Kstart, a start-up accelerator initiative of venture capital firm Kalaari Capital, has invested $100,000 in health-tech company Advenio Technosys Pvt Ltd and $500,000 in rental marketplace GuaRented Rentals Pvt Ltd. Advenio aims to enable improve healthcare outcomes through early detection and management of diseases,while GuaRented is a crowdsourcing marketplace to rent consumer durable products.