The Singapore medtech startup behind migraine tracking app Migraine Buddy and the now-defunct emergency alert app JustShakeIt - has raised over US$1 million (S$1.37m) in its second round of seed funding.

Led by Wavemaker Pacific, the round also saw participation from GREE Ventures, the National Research Foundation, and the startup's original angel investor Shin Ryoku Trust.

This money will be used for expansion into overseas markets such as Japan, and eventually the rest of Asia and the US, co-founder and chief marketing officer Veronica Chew, told BT.

It will also be used for the hiring of new talent - mostly technical - to join the startup's existing team of 12, all of whom are based in an office at JTC's LaunchPad @ one-north.

Healint, whose vision is to provide the best "remote" patient care to sufferers of chronic disorders, seeks to do this by leveraging technology, data and health analytics. Its Migraine Buddy app, akin to a "virtual doctor", helps migraine sufferers track, analyse, predict and manage their migraine episodes.

Costing US$2.99 on the Apple App Store, Migraine Buddy has since last July amassed some 100,000 users from across the globe. "Most of them are from the UK, US and France - I think owing to the higher awareness of migraine there," said Ms Chew.

Healint recently partnered Migraine Action, a migraine support association in the UK, to advance research for UK migraine sufferers. It also partners pharmaceutical companies - among them Merck - to help them better understand patient behaviour and the effectiveness of various drugs, via projects and studies on sleep and gait for instance.

JustShakeIt, the startup's first app which had allowed patients - in the event of a stroke - to inform their emergency contact persons of their location just by shaking their phones, has since the second half of 2014 been discontinued.

"The incidence of stroke is not as high as that of migraines. As Healint is primarily data-driven, focusing on migraine tracking will give us more data to tap," explained Ms Chew. Healint had earlier raised about S$400,000 in angel funding from JFDI.Asia, Sublime IP, Shin Ryoku Trust and private investors.