OiTr: iPhone vs Android
OiTr by OiTr, Inc. is on both the App Store and Google Play. Here are both versions together: downloads, users, revenue, ratings and chart positions, store by store with totals.
App Store
App details
Google Play
App details
OiTr downloads & installs
Both stores, worldwide. Bands are open; exact numbers are free with an account.
| Store | Downloads / day | Lifetime installs |
|---|---|---|
| iPhone | – | – |
| Google Play | – | 100k+ Measured |
| Total | – | 100k+ Confidence |
How this is calculated
Where OiTr's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Retention · share of new users still active
Time spent · per daily user
How this is calculated
Business model: Ad-led
How OiTr makes money: subscriptions, one-off purchases and ads.
Where it ranks now
Both stores, across every country we track.
Ratings
Both stores. Store data, measured.
| Store | Rating | Ratings |
|---|---|---|
| App Store | 4.8 ★ | 16k |
| Google Play | – | – |
| Both stores | 4.8 ★ weighted by ratings | 16k |
About OiTr
OiTr is Japan's first service to provide free sanitary napkins in private restrooms.
The app allows you to receive sanitary napkins, manage and predict your period, and monitor your health.
■Receiving Sanitary Napkins
**How to Use**
1) Install the OiTr app (free).
2) Launch the app and tap the eject button (green) on the app screen.
3) With the app open, hold your smartphone close to the OiTr logo (green) on the dispenser.
4) While still holding your smartphone, tap the "Eject" button (pink).
5) Do not remove your smartphone from the dispenser until the "Requesting Sanitary Napkins" screen appears.
6) Once communication is complete, one sanitary napkin will dispense from either the left or right outlet.
7) Use the sanitary napkin by manually pulling it out of the outlet.
~Ensuring sanitary products reach those who need them~
**No user registration required for the first time**
The first time you use a pad, you don't need to register. Simply download the app and you'll be able to use it. However, if you use more than one pad, you'll need to register. Please take your time and register at your leisure.
**Number of sanitary napkins you can receive**
Once you register, you can receive up to seven free pads per person. After registering, you can use up to seven for 25 days from the first use date. On the 26th day, the limit will reset and you will receive seven free pads again.
**Change at least every two hours**
There is a time limit for using sanitary napkins.
After using one, you can use a new one two hours later. This two-hour limit is based on the recommendation from sanitary product manufacturers and obstetricians/gynecologists that you should change your sanitary napkins every two to three hours.
**OiTr is very hygienic**
You can dispense sanitary napkins without touching the dispenser. Additionally, the dispenser is antibacterial, so you can use it with peace of mind.
■Other Features
**Period Prediction**
This feature recognizes the time you receive your sanitary napkins as your period and allows you to enter the start date of your period with just one tap. This makes predicting your period easier, even for first-time users of period prediction apps or those who find entering your period dates a hassle.
**Schedule Management**
You can easily plan your period and ovulation dates at a glance on the calendar.
**Health Management**
You can record not only your weight, period, and physical condition, but also your mood throughout the day, allowing you to keep detailed track of changes in your physical health. The more information you have about your period, the more accurate your predictions will be.
**OiTr Points**
OiTr Points is a "point-earning" service that allows you to earn points through OiTr services and actions.
<Future Outlook>
As OiTr continues to grow, we will promote various initiatives that support women's health and well-being. Please feel free to send us your f
OiTr iPhone
OiTr is #17 in Health & Fitness Free in Japan and charting in 1 of 24 countries we track.
Updated 27 Sep 2026 · rankings refresh through the day
OiTr on the App Store
App details
OiTr downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Where OiTr's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Retention · share of new users still active
Time spent · per daily user
How this is calculated
Business model: Ad-led
How OiTr makes money: subscriptions, one-off purchases and ads.
Where it ranks now
Every top chart it appears in across 24 countries.
| Country | Charts | Rank |
|---|---|---|
| Health & FitnessFree | #17 |
Apps near OiTr on the chart
Health & Fitness Free, around #17.
Ratings
App Store, worldwide.
About OiTr
OiTr is Japan's first service to provide free sanitary napkins in private restrooms.
The app allows you to receive sanitary napkins, manage and predict your period, and monitor your health.
■Receiving Sanitary Napkins
**How to Use**
1) Install the OiTr app (free).
2) Launch the app and tap the eject button (green) on the app screen.
3) With the app open, hold your smartphone close to the OiTr logo (green) on the dispenser.
4) While still holding your smartphone, tap the "Eject" button (pink).
5) Do not remove your smartphone from the dispenser until the "Requesting Sanitary Napkins" screen appears.
6) Once communication is complete, one sanitary napkin will dispense from either the left or right outlet.
7) Use the sanitary napkin by manually pulling it out of the outlet.
~Ensuring sanitary products reach those who need them~
**No user registration required for the first time**
The first time you use a pad, you don't need to register. Simply download the app and you'll be able to use it. However, if you use more than one pad, you'll need to register. Please take your time and register at your leisure.
**Number of sanitary napkins you can receive**
Once you register, you can receive up to seven free pads per person. After registering, you can use up to seven for 25 days from the first use date. On the 26th day, the limit will reset and you will receive seven free pads again.
**Change at least every two hours**
There is a time limit for using sanitary napkins.
After using one, you can use a new one two hours later. This two-hour limit is based on the recommendation from sanitary product manufacturers and obstetricians/gynecologists that you should change your sanitary napkins every two to three hours.
**OiTr is very hygienic**
You can dispense sanitary napkins without touching the dispenser. Additionally, the dispenser is antibacterial, so you can use it with peace of mind.
■Other Features
**Period Prediction**
This feature recognizes the time you receive your sanitary napkins as your period and allows you to enter the start date of your period with just one tap. This makes predicting your period easier, even for first-time users of period prediction apps or those who find entering your period dates a hassle.
**Schedule Management**
You can easily plan your period and ovulation dates at a glance on the calendar.
**Health Management**
You can record not only your weight, period, and physical condition, but also your mood throughout the day, allowing you to keep detailed track of changes in your physical health. The more information you have about your period, the more accurate your predictions will be.
**OiTr Points**
OiTr Points is a "point-earning" service that allows you to earn points through OiTr services and actions.
<Future Outlook>
As OiTr continues to grow, we will promote various initiatives that support women's health and well-being. Please feel free to send us your f
Latest updates
OiTr Android
OiTr is #54 in Health & Fitness Free on Google Play in Japan and charting in 1 of 15 countries we track.
Updated 27 Sep 2026 · rankings refresh through the day
OiTr on Google Play
App details
OiTr downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Where OiTr's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
How this is calculated
Business model: Ad-led
How OiTr makes money: subscriptions, one-off purchases and ads.
Where it ranks on Google Play
Every top 200 chart it appears in across 15 countries.
| Country | Charts | Rank |
|---|---|---|
| Health & FitnessFree | #54 |
Apps near OiTr on the chart
Health & Fitness Free, around #54.
About OiTr
The app allows you to receive sanitary napkins, manage and predict your period, and monitor your health.
■Receiving Sanitary Napkins
**How to Use**
1) Install the OiTr app (free).
2) Launch the app and tap the eject button (green) on the app screen.
3) With the app open, hold your smartphone close to the OiTr logo (green) on the dispenser.
4) While still holding your smartphone, tap the "Eject" button (pink).
5) Do not remove your smartphone from the dispenser until the "Requesting Sanitary Napkins" screen appears.
6) Once communication is complete, one sanitary napkin will dispense from either the left or right outlet.
7) Use the sanitary napkin by manually pulling it out of the outlet.
~Ensuring sanitary products reach those who need them~
**No user registration required for the first time**
The first time you use a pad, you don't need to register. Simply download the app and you'll be able to use it. However, if you use more than one pad, you'll need to register. Please take your time and register at your leisure.
**Number of sanitary napkins you can receive**
Once you register, you can receive up to seven free pads per person. After registering, you can use up to seven for 25 days from the first use date. On the 26th day, the limit will reset and you will receive seven free pads again.
**Change at least every two hours**
There is a time limit for using sanitary napkins.
After using one, you can use a new one two hours later. This two-hour limit is based on the recommendation from sanitary product manufacturers and obstetricians/gynecologists that you should change your sanitary napkins every two to three hours.
**OiTr is very hygienic**
You can dispense sanitary napkins without touching the dispenser. Additionally, the dispenser is antibacterial, so you can use it with peace of mind.
■Other Features
**Period Prediction**
This feature recognizes the time you receive your sanitary napkins as your period and allows you to enter the start date of your period with just one tap. This makes predicting your period easier, even for first-time users of period prediction apps or those who find entering your period dates a hassle.
**Schedule Management**
You can easily plan your period and ovulation dates at a glance on the calendar.
**Health Management**
You can record not only your weight, period, and physical condition, but also your mood throughout the day, allowing you to keep detailed track of changes in your physical health. The more information you have about your period, the more accurate your predictions will be.
**OiTr Points**
OiTr Points is a "point-earning" service that allows you to earn points through OiTr services and actions.
<Future Outlook>
As OiTr continues to grow, we will promote various initiatives that support women's health and well-being. Please feel free to send us your feedback on our service or propose partnerships.
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