Basic report
FreeEvery reading in one clear table, ready to print or send.
- Overall average with category and pulse
- Morning and evening averages
- Share of readings in your target
- All readings with category, tags and notes
Your blood pressure diary, kept on your phone.
Sistovia records your home readings, averages them the way medical guidelines recommend, and gives you a clear report to take to your doctor.
See how it works
Coming soon to Google Play
- Works offline
- No account
- No ads, no tracking
What Sistovia does
A simple tool for people who measure their blood pressure at home, whether on their own or because their doctor asked them to.
Quick entries
Record systolic and diastolic pressure, pulse and an optional note in a few taps.
Averages that follow guidelines
Your readings are averaged using the home measurement method of the guideline for your region.
Measurement reminders
Optional reminders help you complete a full measuring week.
Reports for your doctor
A free basic PDF report, or an extended one with charts and comparisons.
Private by design
No server, no sign in, no analytics. Everything stays on your device and works without internet.
Five languages
The app interface, reports and dates adapt to the language you choose.
How a measuring week works
A single reading says little. Blood pressure changes through the day, so guidelines ask for a series of home readings and look at the average.
Example: the European and US method
Measure for 7 days, morning and evening.The first day is left out, because readings tend to run higher while you get used to measuring.
Choose your region
On first launch the app suggests a region based on your phone. You can change it anytime in your profile.
Record your readings
Enter each reading as you take it. Reminders help you keep the rhythm.
See your average
After the week, Sistovia compares your average with the home threshold of your region's guideline.
Guidelines by region
Medical societies around the world set slightly different limits for home readings. Sistovia uses the one that applies where you live.
| Region | Guideline | Home threshold | Measuring period |
|---|---|---|---|
| Europe | ESC 2024, ESH 2023 | 135/85 mmHg | 7 days, first day skipped |
| United States | AHA/ACC 2025 | 130/80 mmHg stage 2 from 135/85 | 7 days, first day skipped |
| Japan | JSH 2025 | 135/85 mmHg grades I to III | at least 5 days |
| China | Chinese guidelines 2024 | 135/85 mmHg two levels | at least 5 days |
Sistovia stores your raw readings. If you change your region, your whole history is recalculated with the new guideline.
Safety alerts
Two warnings apply in every region, no matter which guideline you use.
180/110
Very high reading. From this value the app shows a clear warning and the emergency number for your region. If you feel unwell, call it.
90/60
Low reading. Below this value the app lets you know, so you can mention it to your doctor, especially if you feel dizzy or weak.
Two reports for your doctor
Both are created on your phone as a PDF and follow the guideline of your region. The pages below come from a sample diary of 25 days.
Extended report
4.99 EUR onceA full picture of your measuring period on seven pages. Launch price 2.99 EUR during the first 30 days after release.
- Overview at a glance, with your average on the regional scale
- Measurement quality: missed mornings, evenings and days
- Four trend charts, including morning surge and pulse pressure
- First and second half of the period compared
- Weekly averages and readings by tag
- Category distribution, stability and a measuring calendar
- Unusually high or low readings and your notes, listed separately
Tap a page to enlarge it.
One purchase, linked to your Google account, so it moves with you to a new phone. No subscription.
Questions
How should I measure at home?
Sit quietly for a few minutes before measuring, with your back supported and feet flat on the floor. Put the cuff on your bare upper arm at heart level. Do not smoke, drink coffee or exercise in the 30 minutes before. Use a validated automatic upper arm device and follow the instructions from your doctor if they differ.
Why is the first day left out?
On the first day people are often a little tense about measuring, and readings tend to be higher. European and US guidelines therefore skip it and average the following days.
Why is the home limit lower than the one at the doctor's office?
Readings at the doctor's office are usually higher than at home. Guidelines set separate, lower limits for home readings, which is why Sistovia only uses home thresholds.
What happens if I change my region?
Nothing is lost. The app keeps your original readings and recalculates your averages and results according to the newly selected guideline.
Does Sistovia tell me whether I have high blood pressure?
No. Sistovia records your readings and shows how they compare with published guidelines. Only a doctor can assess your blood pressure and decide on any treatment. Never change your medication based on the app.
Where is my data stored?
Only on your phone. There is no account and no server, so we cannot see your readings. If you delete the app, the data is deleted too, so export a report if you want to keep a copy.
How much does it cost?
The app and the basic PDF report are free, with no ads. The extended report is a one-time purchase of 4.99 EUR, with a launch price of 2.99 EUR during the first 30 days after release. No subscription, no account. Your purchase is linked to your Google account, so it moves with you to a new phone.
Your health data never leaves your phone
Health information is a special category of personal data under GDPR. Sistovia keeps it on your device and never sends it anywhere.