Where is Lifestack located?

Lifestack is headquartered in Alameda, United States.

How many employees does Lifestack have?

As of Jun 30, 2026, the latest employee count at Lifestack is 4.

Where does Lifestack rank among its competitors?

Lifestack ranks 31st amongst 454 active competitors, of which 18 are funded. It stands 11th in terms of total funding among its competitors. The most recent competitor to raise funding was TimeTree, which secured $14.8M in Sep, 2025.

Who are the top competitors of Lifestack?

Lifestack's top competitors include TimeTree, Reclaim and Sunrise. Among them, TimeTree secured the most recent funding round in September, 2025.

Lifestack - 2026 Company Profile, Team & Competitors

Lifestack is an unfunded company based in Alameda (United States), founded in 2022 by Hayato Waki. It operates as a Provider of AI-powered calendar app focused on health data integration. Lifestack has not raised any funding yet. The company has 454 active competitors, including 18 funded and 7 that have exited. Its top competitors include companies like TimeTree, Reclaim and Sunrise.

Company Details

Provider of AI-powered calendar app focused on health data integration. It provides users with tools that help individuals in scheduling tasks, meetings etc. through a calendar user interface.

Website: lifestack.ai
Social
Email ID: *****@demind-inc.com

Key Metrics

Founded Year

2022

Location

Alameda, United States

Stage

Unfunded

Ranked

31^st among 454 active competitors

Employee Count

4 as on Jun 30, 2026

Similar Companies

TimeTree & 598 more

View Lifestack's full profile

Lifestack has not raised any funding rounds yet.

The founders of Lifestack is Hayato Waki. Nao Yukawa is the CEO of Lifestack.

Here are the details of Lifestack's key team members:

Hayato Waki: Co-Founder of Lifestack.
Nao Yukawa: CEO of Lifestack.

View details of Lifestack's Founder profiles and Board Members

Lifestack's employee count trend

Lifestack has 4 employees as of Jun 26. Here is Lifestack's employee count trend over the years:

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Top competitors of Lifestack include TimeTree, Reclaim and Sunrise. Here is the list of Top 10 competitors of Lifestack, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	TimeTree 2014, Tokyo (Japan), Series F	Developer of a calendar app to manage schedules	$39.9M	Kakao Ventures, Stonebridge Capital & 9 others	67/100
2nd	Reclaim 2018, Portland (United States), Acquired	Provider of AI-based online virtual assistant-integrated calendar management tool	$9.5M	Gradient Ventures, Index Ventures & 15 others	55/100
3rd	Sunrise 2012, New York City (United States), Acquired	Smart calendar app	$8.2M	Resolute Ventures, Balderton Capital & 10 others	53/100
4th	Corca 2021, Seoul (South Korea), Seed	AI-powered demand-side platform	$5.37M	BonAngels Venture Partners, Laguna Investment ... & 1 others	48/100
5th	Stanza 2012, San Francisco (United States), Seed	Provider of software solutions for calendar management	$4.3M	Western Technology Investment, StartX & 5 others	48/100
6th	Flexibits 2011, San Francisco (United States), Unfunded	Flexible apps for events, tasks, meetings, and relationship management	-	-	47/100
7th	Supershift 2018, Hamburg (Germany), Unfunded	Provider of an app-based calendar management platform	-	-	46/100
8th	MC Calendar 2017, Moscow (Russia), Unfunded	Provider of a calendar management app	-	-	45/100
9th	MyShiftplanner 2013, Manchester (United Kingdom), Unfunded	Provider of a cloud-based calendar for work shift planning	-	-	45/100
10th	Shift Work Calendar 2020, London (United Kingdom), Unfunded	Provider of a cloud-based mobile application to create and track daily activities	-	-	45/100
31st	Lifestack 2022, Alameda (United States), Unfunded	Provider of AI-powered calendar app focused on health data integration	-	-	41/100