The biggest change that mobile apps have brought to the health and wellness industry is that "the leadership of health management has shifted from hospitals to individuals." Blood pressure, sleep quality, and dietary habits could previously only be monitored during monthly checkups. Now, they can be recorded and analyzed daily, and in near real-time, with just a smartphone. As a result, the concept of preventive medicine has been elevated from a fantasy to a practical reality.
It would be a shame to simply dismiss this change as just "more convenient." Let's take a look, step by step, at what has actually changed, what challenges remain, and what companies should consider when developing apps in this area.
The widespread adoption of smartphones has led to "always-on health data."
As a fundamental premise, in Japan, the household ownership rate of smartphones has already surpassed that of televisions. A 2025 survey by the Ministry of Internal Affairs and Communications, reported by the Nikkei, confirmed that the household ownership rate of smartphones would exceed that of televisions for the first time. The Ministry of Internal Affairs and Communications' Information and Communications White Paper also reports that as of 2023, the household ownership rate of smartphones had reached a level of over 90%.
The implications of these numbers are simple. If you create a health app, you already have a device to use it on in almost every household. In other words, the barrier to distribution is practically zero. Healthcare services that, just a few years ago, required users to purchase a dedicated device can now be started simply by downloading an app. This difference isn't about development costs; it's a difference that determines whether a business is viable or not.
The focus of care has shifted from hospital-based care to continuous care in daily life.
Traditional health management was basically a "go to the hospital only after something happens" model. Today's mobile apps excel at picking up on the small changes in daily life, even before that happens.
For example, apps that continuously record blood sugar levels, heart rate, and sleep patterns can accumulate far more detailed data than a doctor can obtain in a consultation. What you learn from a quarterly health checkup is completely different from the trends that emerge from daily records. Ideally, you should notice changes in your health when the numbers start to fluctuate gradually; it's too late once symptoms appear.
How fitness training apps have changed the way we "stick with" our routines.
Going to the gym and continuing to exercise are not actually the same thing. Many people quit the gym because they "stopped going," not because they were dissatisfied with the facilities.
When you look at successful fitness apps, what they all have in common is a focus on making progress "visible," rather than the design of notifications and reminders. How has your exercise volume changed this week compared to last week? How far have you come towards your goal? When this is immediately clear through numbers and graphs, people are more likely to stick with it. Conversely, apps that are crammed with too many features tend to see users abandon them within the first week. I feel that this kind of design philosophy should be solidified from the very beginning when developing a fitness app .
The role of nutrition and meal management apps is shifting from "recording" to "suggestions."
Until a few years ago, the main function of meal tracking apps was calorie counting. Now that features that automatically recognize ingredients and estimate nutrients from photos have become common, the role of apps is shifting from "recording" to "suggesting what to eat next."
This is particularly effective in managing lifestyle-related diseases such as diabetes and hypertension. If doctors and registered dietitians can track the contents of each meal in real time, they can adjust dietary guidance without waiting for the next appointment. The increasing number of inquiries from companies regarding the development of nutrition management apps is due to this need for measures against lifestyle-related diseases.
A new form of medical consultation has emerged through the combination of telemedicine and other healthcare services.
Combining monitoring apps with online consultations can reduce the frequency of hospital visits altogether. For people living in rural areas without nearby specialists, or those whose work schedules prevent them from going to the hospital during weekday hours, this offers more than just convenience. It fundamentally changes the issue of whether or not they can actually access medical care.
This is also the reason why more and more companies and medical institutions are adopting health monitoring apps . The system, which automatically collects vital data in conjunction with wearable devices and sends alerts to doctors when abnormal values are detected, is no longer a novelty but is becoming a standard requirement.
Government and businesses are also taking serious action.
This isn't just a matter for private companies. The Ministry of Health, Labour and Welfare is working to improve public health awareness through its "Smart Life Project," collaborating with companies and local governments. There are also emerging instances where the government itself is using apps to deliver health policies, such as the "online community gathering place" app for the elderly, jointly developed with the National Center for Geriatrics and Gerontology.
The same trend is seen in the field of corporate health management. More and more companies are introducing systems that centrally manage employee stress checks and health check results on an app. This is not simply to reduce paperwork, but a practical measure to identify mental health problems early. The percentage of workers experiencing high levels of stress has remained high in recent years, and companies are increasingly motivated to take preventative measures.
Challenges that the development team actually faces
I've only written about the good things so far, but developing a health app is not easy. Here are some points where people often stumble.
Low retention rates . No matter how many downloads an app has, it's not uncommon for only about 10% of users to still be using it after three months. Health apps are the kind of service where "value only comes from continued use," so the key to success isn't the abundance of initial features, but rather how well you design the small reasons for users to open the app every day.
Accuracy as medical information is crucial . When automating nutritional guidance or exercise load suggestions, providing unsubstantiated figures directly impacts the user's health. This is an area where approaching it like an entertainment app can lead to serious problems.
Data handling . Personal health data is considered sensitive information. In Japan, it often needs to be treated as sensitive personal information under the revised Personal Information Protection Act, and if encryption and access permission design are postponed, it may require a complete rework just before release.
Platform and device fragmentation . Apple Health and Google Fit, and the API specifications for each company's wearable devices, are different. Trying to add more integrations later often requires larger modifications than anticipated. This is a point that should be determined in the early stages of design.
The direction of functions that will be required in the future
Personally, I believe that AI-powered personalization will become even more important in the future. The same goal of "8,000 steps a day" means different things to someone in their 60s than to someone in their 20s. A system that automatically adjusts target values and advice to suit each individual based on their age, medical history, and daily lifestyle will surely become a standard feature in health apps going forward.
Another important feature is the ability to share information with family members and healthcare professionals. Features that allow family members living far away to check on the health status of elderly parents, or that allow primary care physicians to review app data before appointments, are currently only implemented in a limited number of apps. This is where there is room for growth.
What companies considering app development should decide first
If you decide to create an app in the health and wellness field, the first thing you should decide is not a list of features, but "whose daily problems you will solve and what kind of problems you will solve." Preventing lifestyle-related diseases, maintaining fitness, mental health care, monitoring the elderly—these all fall under the same category of "health apps," but the necessary features, UI, and how to comply with legal regulations are completely different.
Therefore, choosing a development partner with experience in handling medical data will ultimately reduce both development time and costs. It's a good idea to check in advance whether they have the capacity to handle everything from wearable integration and AI-based data analysis to the implementation of telemedicine functions. A company with experience in wellness app development should be able to proactively point out these pitfalls during the requirements definition phase.
Some companies may want to incorporate healthcare features as part of a broader mobile app development , beyond just fitness and nutrition management . In such cases, the key is to consider how to integrate them seamlessly into existing services.
lastly
For the health and wellness industry, mobile apps are no longer merely supplementary tools; they are transforming the very way care is delivered. They allow for the tracking of daily changes without requiring hospital visits, and deliver information to those who need it, at the right time. This system will undoubtedly become even more sophisticated in the future.
Companies looking to integrate health management features into their services, or those wanting to develop a specialized app from scratch, should consult with a team like <font dir="auto" style="vertical-align: inherit;"><font dir="auto" style="vertical-align: inherit;">Nyusoft Solutions</font></font> , which has experience in healthcare development, at an early stage. There's nothing that reduces the cost of rework more effectively than consulting before requirements are finalized.