In this podcast episode, we hear from Patrick, the founder of "100 Bad Ideas" studio and developer of the StressWatch app, about how StressWatch was featured on the App Store in over 170 countries and acquired approximately 4 million users in just 2 years. Drawing from his experience at Meizu, Frog Design, and FITURE, Patrick shares his methodology for spotting opportunities, the winding journey he took, and insights into how today's app factory model differs from the mobile internet era, including who the new players are.

1. Patrick's Introduction and the StressWatch Success Story

Ronghui opened the podcast by introducing Patrick as the developer of the StressWatch app and a former designer at Meizu and Frog Design, previewing a conversation about his development experience over the past 2 years and his methodology for spotting opportunities.

Patrick introduced himself as a designer by background, having worked at Meizu, Frog Design, and FITURE before now developing StressWatch at his product studio "100 Bad Ideas." StressWatch is an Apple Watch-based app offering stress monitoring, health management, and watch face customization. Notably, StressWatch was launched in April two years ago (as of 2025), making this podcast a second anniversary retrospective.

Since launch, StressWatch has acquired approximately 4 million global users and was featured on the Apple App Store in over 170 countries. Between February and March of the previous year, it even topped the real-time trending search rankings on Xiaohongshu (Little Red Book). Patrick said he was shocked when a friend sent him a screenshot showing the app had gone viral.

When Koji asked why it hit number one in trending searches, Patrick explained it was because of a user's post about "their Apple Watch alarm going off during a blind date" while experiencing extreme stress.

This user was feeling extreme stress during a blind date, and our app happened to alert them on the Apple Watch that they were in a high-pressure state. The comments section exploded with "What app is this?" and many people shared their own blind date stress-monitoring screenshots, creating a wave of shared experience.

Another memorable experience came from Taiwan. One day, StressWatch downloads from Taiwan surged, driven by a heated discussion on Threads. After one user shared their app experience, a professional doctor and well-known influencers joined the conversation, making it a major topic. StressWatch climbed to 2nd place in Taiwan's overall app download rankings, surpassing ChatGPT at 3rd -- a fact Patrick said he commemorated with a screenshot, feeling immense accomplishment. Currently, StressWatch shows strong performance in markets like Japan, Korea, and Germany.

2. The Birth Story of "100 Bad Ideas" Studio

When Koji asked about the story behind the studio name "100 Bad Ideas," Patrick said it was inspired by magic. Beyond being a designer, Patrick is a magic enthusiast who was president of the magic club in college.

The name originated when Patrick and his co-founder Alex were brainstorming business ideas and recording them in a document, around the same time they happened to listen to a podcast featuring Blake Vogt, one of the world's most creative magicians.

When Koji joked that he only knew David Copperfield, Patrick explained that Blake Vogt is well-known in the US, having placed highly on "America's Got Talent." During college, he even interviewed for a consulting role with David Copperfield's team.

During the interview, Copperfield's team asked Blake Vogt, "Can you guarantee at least one good idea if we hire you?" Blake Vogt responded:

I can't guarantee one good idea, but I can provide bad ideas endlessly.

Patrick recalled finding this answer fascinating, believing that the essence of all creative work is not hastily dismissing new ideas but finding the innovative and valuable parts within them. He emphasized that if you keep developing ideas even when they seem bad, good ideas will inevitably emerge. Allowing failure is paramount.

So Patrick wrote at the top of his idea document: "Let's start by coming up with 100 bad ideas." Later, when considering a studio name, a friend saw this line and suggested, "Why not just call it '100 Bad Ideas'? You wrote right there that you're starting with 100 bad ideas." And that is how the studio got its name.

3. From Designer to Entrepreneur: Patrick's Growth Journey

Ronghui asked how Patrick's experiences at Meizu, Frog Design, and FITURE helped and inspired the development of StressWatch.

Patrick said his professional journey started even earlier -- during college, he worked at a small advertising agency specializing in the fishing industry. When Koji asked why fishing, Patrick explained that the fishing industry is small but fragmented, with many small companies needing advertising, leaving room for small agencies to survive.

A notable characteristic of Patrick's post-graduation career was that he never worked at a traditional internet company. Meizu and FITURE were hardware-software hybrid companies, while Frog Design was a design consulting firm. Working at Meizu in 2016 and Frog Design in 2018, he felt he had missed the last train of the internet boom. Many colleagues at the time were moving to rapidly growing internet companies like ByteDance and Pinduoduo.

When asked about his specific work at Meizu, Patrick said he mainly handled visual design -- the visual and interaction experience of the mobile operating system. Meizu was a company that placed great importance on user experience and design.

At Frog Design, his work varied depending on the client. Having focused on interface design at Meizu, Patrick wanted to broaden his horizons into user research and product building from 0 to 1 -- early-stage design work. Fortunately, he was able to join when a colleague's departure created an opening. At Frog Design, he participated extensively in 0-to-1 innovation processes for major corporations and startups, gaining much from discovering product opportunities and feature innovations through user research.

When asked about Frog Design's user research methodology, Patrick explained they followed the "Design Thinking" methodology, widely used at many design firms like IDEO. In short: summarize insights from research, diverge into ideas, build prototypes, test, and iterate toward a minimum viable product (MVP).

After tiring of always having the client set the problems rather than discovering them himself, Patrick set one criterion when leaving Frog Design: joining a startup. He chose FITURE, drawn by its focus on sports-related hardware development.

FITURE was a smart mirror-based health fitness hardware company. Patrick worked domestically before spending a year in New York managing the US team. This experience, including North American user interviews about Americans' lifestyle habits and the health fitness domain, profoundly influenced his path. Though he left FITURE, those experiences became the catalyst for founding "100 Bad Ideas," with the core always being "big health" and "health fitness."

4. Differences Between Eastern and Western Health Markets and Opportunities

Patrick discovered several unexpected insights about the health fitness sector.

First, the age demographics of users were different from the domestic market. In Korea (including current StressWatch users), the 20-35 age group dominates, while in the US the age range is much broader, with frequent feedback from elderly users. FITURE had expected 30-40 year-olds, but actual buyers were more often in their 40s and 50s.

Patrick connected this to national development stages. In the US, baby boomers born during economic prosperity have strong health and fitness demand and willingness to spend. In Korea, different demographics result in a relatively younger consumer base for health tech products.

Second, US fitness demand is highly segmented, and users willingly pay for very niche fitness needs. For example, while basic fitness bands sell for modest prices domestically, the US market has premium products like WHOOP for passionate fitness enthusiasts -- selling for $200-300 with an additional ~$20 monthly subscription. The Oura ring similarly follows a hardware-plus-software subscription model at $6/month. The Hatch bedside lamp, which uses circadian-rhythm lighting to wake users naturally, is also popular in the US. These combined hardware-software subscription models are commonplace in America but relatively rare in China.

These observations shaped StressWatch's development direction. Patrick identified several key opportunities:

First, post-pandemic demand for blood oxygen monitoring had driven Apple Watch sales globally.

Second, HRV (heart rate variability) monitoring had become a major selling point in the US market. HRV substantially reflects physical recovery and psychological stress states, and stress is a particularly important topic in East Asian cultures.

Patrick saw that a concept widely accepted in the US, with underlying themes of stress and physical recovery that align well with East Asian culture, had no quality product serving the East Asian market -- this was the core of the product-market fit.

Third, after analyzing existing stress monitoring software, Apple ecosystem options were extremely rare, and the few existing apps had mediocre, "masculine" designs. Smartwatches like Garmin and COROS had stress monitoring features, but most only displayed raw numbers like "stress index 85" without additional interpretation.

Patrick believed stress as a topic should be expressed emotionally. The combination of growing wearable adoption, the East Asian market gap, and the potential for emotional design to add significant user experience value led to the final decision to develop StressWatch.

The app's most visible feature is not numbers but a "Stress Bubble" -- a dynamic illustrated character that changes based on the user's state. When relaxed (high HRV, low resting heart rate), a green Stress Bubble character lounges on a tube wearing sunglasses in sunny weather. When stressed, a red bubble character hides under tree shade surrounded by storms. The weather around the bubble changes with stress levels -- clear skies for optimal states, thunderstorms for the worst, and overcast or light rain for intermediate states.

5. Startup Exploration: Ideas That Haven't Been Realized Yet

Patrick shared some of the ideas he recorded but never realized, noting some had already been built by others.

One was SunAlly, a watch-based sun care app. When Apple announced "outdoor sunlight exposure time tracking" at WWDC two years ago, Patrick envisioned combining it with sun health, skincare, and tanning, but never built it at the time.

He also considered developing Apple Watch diving features when Apple Watch Ultra added dive support -- even traveling to Mexico to learn diving. But Apple's dive API was not publicly available to developers and required specialized qualifications, so the project never materialized.

Patrick also developed an AI Bible website to help Christians ask questions about scripture. Though functional, they could not sustain it because they were not Christians themselves and lacked deep product insight. They later discovered a similar product, "Bible Chat," built by a Romanian team that was doing quite well.

Before StressWatch, Patrick and his co-founder agreed they were comfortable with potentially having no income for 2 years while experimenting. Without mortgage debt, being unmarried, and childless, they could sustain a simple lifestyle. Patrick acknowledged this was a "luxurious choice" that not everyone could make.

6. Methodology for Spotting Product Opportunities

Through experience developing multiple products, Patrick distilled several insights about finding product opportunities.

First, for small teams, it is better to think in terms of MPF (Market-Product Fit) rather than PMF (Product-Market Fit). PMF assumes you have a product first and then find a market. MPF reverses this -- observe what already exists in the market first. This includes copying products from one country to another (common in early Chinese internet) or discovering information gaps. StressWatch found the HRV information gap between the US and East Asian markets, identified that existing products were mostly 60-point quality, and elevated the product to 80-90 points through design optimization to enter the empty market.

Patrick advised against directly copying competitors. Even if your product is 10 points better, users will not switch from established habits if the switching cost exceeds the perceived value gain.

When looking at product rankings, I suggest focusing on products ranked 200th-500th in a specific subcategory. This shows there is some user demand but not many competitors. If people are using a product despite poor quality, there might be an opportunity. Top-ranked products have good reasons for being there and are hard to overtake.

Second, do not fear small demand. Using the Pareto principle (80/20 rule), four quadrants emerge:

• 80% population / 80% demand (most people's strong needs): Already dominated by big companies (ride-sharing, food delivery, messaging).
• 80% population / 20% demand (most people's weak needs): Suited as big company sub-businesses leveraging existing traffic.
• 20% population / 80% demand (few people's strong needs): The sweet spot for small teams. Though users are few, needs are crystal clear and strong. A food recognition app for diabetic patients is one example -- general users might not care, but diabetics absolutely need to know nutritional details.
• 20% population / 20% demand: Usually unsuitable as a primary product, though AI may eventually address this.

Patrick also emphasized the importance of following new technology trends, especially Apple's WWDC for iOS developers. StressWatch earned a worldwide App Store feature because Patrick studied WWDC announcements repeatedly and built a mood logging feature using Apple's new mood-recording API -- perfectly aligning with Apple's promotional direction.

7. Learning from Mistakes: Entrepreneurial Experience and Lessons

Patrick's key lessons from experience included:

First, when you discover product-market fit (PMF), do not hesitate -- go all in. He admitted to underestimating StressWatch's potential, initially thinking Apple Watch users were limited and that 100,000-200,000 downloads would be fine. This led to about 6 months of insufficient focus, during which competitors developed copycat products or added similar features that achieved better growth.

Second, small teams should not fear small niches. While large internet companies must target massive markets, small teams can sustain operations by serving just tens of thousands of paying users well.

Third, growth strategy is as important as the product itself. Coming from hardware-software and consulting backgrounds, Patrick and his co-founder lacked pure software growth experience and had to learn continuously. Getting a product from 0 to 1 is just the first step; going from 1 to 100 may require hundreds or thousands of times more effort and resources.

Regarding growth opportunities, when StressWatch showed good domestic response and an East Asian market gap, Patrick quickly decided to expand internationally. Every product has a window period for growth -- early on, customer acquisition costs in several countries were very low due to lack of competition. Those costs have since risen 2-3x.

8. Global App Factory Success Models and Implications

Koji asked about app factory models that Patrick particularly admired. Patrick mentioned several:

AIBY -- an early-established company with excellent product operations and commercialization. Companies from Vietnam and Turkey also operate similarly, and some have even copied StressWatch. Despite the "factory" label suggesting crude products, Patrick emphasized that downloading and using these apps reveals they are all very polished.

Domestically, Enerjoy (Beijing) has launched multiple products with outstanding overall design, animation effects, and monetization strategies. Their "MePlus" app, essentially a to-do list app, cleverly targeted homemakers who need task management but had no tailored products. Beyond basic to-do lists, it provides premade templates like "5 habits to transform your morning," appealing to users seeking self-improvement, with particularly impressive paid conversion rates.

Internationally, Patrick praised Lumi (France) for its beautiful design across all products, focusing on exercise and health. Genesis (Ukraine) has many products including BetterMe, which performs well in health and fitness rankings across many countries.

Voodoo (France), a hyper-casual game company, has a fascinating internal innovation mechanism. Their product division splits into two teams: a prototype team focused on gameplay innovation, and a business team handling full product operations. When prototype test data shows promise, it is immediately handed to the business team for further development and monetization.

Abishkking (China) uses a "reskinning" strategy in the fitness app space -- creating variations like women's abs, men's chest training, etc. During the pandemic, they occupied half the top 10 health fitness app downloads globally.

These companies all carry the "app factory" label, but their strategies and models differ significantly. Some leverage outstanding product quality and sharp market insight; others excel at self-replication to build comprehensive product matrices; still others, like Abishkking, thrive on powerful commercial monetization with high conversion rates.

Closing Thoughts

Patrick's StressWatch success story was not born from lucky coincidence but from intense deliberation, trial and error, and relentless exploration of new technology trends. What stood out most was the "100 Bad Ideas" spirit of fearlessly iterating on ideas despite failure, combined with the execution to invest boldly and expand globally upon discovering product-market fit. As we enter the AI era, this story reinforces the value of pursuing "small niches" and "rapid experimentation."

Patrick identified three reasons why now is a great time to start a business: the maturation of global go-to-market infrastructure, AI capabilities dramatically improving globalization efficiency (multilingual support, user communication), and AI enabling faster experimentation that increases the odds of finding product-market fit. As Koji joked, thanks to AI, the "100 Bad Ideas" studio might soon upgrade to a "1 million bad ideas" studio -- because the cost of experimentation has dropped so dramatically.