Bluetooth Sync

Sync your meter in one tap

Connect your AccuCheck Instant or any standard Bluetooth glucose meter. Prick reads your readings directly over Bluetooth Low Energy. No cables, no typing, no cloud servers in between.

Bluetooth sync screen showing device discovery

Manual Entry

No meter? Log readings manually

Enter readings by hand if you prefer. Same full tracking, same analytics, same insights. Every reading gets the same treatment regardless of how it arrives.

Family Profiles

One meter, the whole family

Most glucose apps lock you into a single profile. Prick lets multiple people share the same meter. After syncing, new readings land in a staging area where you assign each one to the right person before saving. No reading slips through unassigned. Everyone gets their own clean history, trends, and analytics.

Staging area where readings are assigned to family members

Meal Tracking

Know what each meal does

Log meals with specific food tags. Track pre-meal and post-meal readings together to see your actual spike. Over time, you will learn which foods your body handles well and which ones cause trouble.

Meal tracking view with food tags and glucose spike

Guided Experiments

Test what actually works

Built-in experiment templates let you test real questions about your body. Does a walk after lunch lower your spike? Does eating vegetables first help? The app walks you through each test step by step, with timers and reminders, and shows a clear comparison when done.

Experiment results comparing walking effect on glucose spike

7 built-in experiment templates

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Walking Effect

Compare sitting vs. a 15-minute walk after the same meal. The app starts a walk timer and compares both spikes.

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Carb Order

Test eating vegetables and protein first vs. everything mixed. See if the order you eat changes your spike.

⚖️

Portion Size

Compare a full portion vs. a reduced portion of the same food. Find the amount your body handles well.

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New Food

Test how a specific food affects your glucose by comparing it against a known baseline meal.

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Fiber & Fat Pairing

Add nuts, ghee, or fiber to a carb-heavy meal and see if it blunts the spike compared to the carb alone.

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Food Consistency

Track the same food over multiple days. See if your body responds consistently or varies day to day.

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Custom

Design your own experiment with custom labels. Test any hypothesis you want to explore.

Analytics

Your numbers, at a glance

The dashboard shows your fasting trend, estimated HbA1c (GMI), glucose stability (CV, SD, MAGE), Time in Range, and meal spike analysis. Color-coded readings so you can spot patterns at a glance. All science-backed, derived from 100+ peer-reviewed sources.

Dashboard showing fasting trend chart and analytics cards

Insights Hub

Deep patterns, clear answers

The Insights hub shows your glucose heatmap, risk assessment scores (LBGI, HBGI, GRI), dawn phenomenon detection, exercise impact analysis, and progression risk. Advanced analytics presented in plain language, not medical jargon.

Insights hub showing glucose heatmap and risk assessment

Reports

Share with your doctor

Generate a clean glucose report with statistics, Time in Range breakdown, and data quality indicators. Export as PDF and share directly from your phone. Your doctor gets the numbers they need in a format they recognize.

Education

31 articles in plain English

A built-in learning library explains every metric, every chart, every number. Written for real people, not medical professionals. Understand what Time in Range means, why fasting glucose matters, how meal spikes work, and what you can do about all of it.

Learn view showing educational articles about glucose

Data Export

Your data, your way

Export your data as JSON (full backup) or CSV (readings only) to share with your doctor or keep as a backup. Import data back in if you need to. iCloud sync keeps everything backed up automatically across your devices with no account setup required.

Why I Built This

When someone you love gets a diagnosis, you want to help

A close family member was told she had prediabetes. She was already doing a lot of things right. She just needed to understand how her body responded to the foods she ate every day. Rice, lentils, bread, fruit. The basics.

We bought an AccuCheck Instant glucometer. It works well. But the app that came with it, mySugr, was built for a single person. Our family shares one meter. Readings from two people mixed together. Trends were meaningless. And none of the existing apps answered the simplest question: which meals are actually causing trouble?

So I built one. Prick syncs with the meter over Bluetooth, keeps each family member's data separate, and includes something no other glucose app offers: guided experiments. She can test whether eating vegetables before rice reduces her spike, or whether a short walk after dinner makes a difference. The app walks her through each test step by step, with timers and reminders, and shows a clear comparison when it is done.

The analytics are built on 100+ peer-reviewed medical sources. The educational content is written in plain language, not clinical jargon. Every design decision was tested by the person it was built for: a 60-year-old woman in Bangalore who uses her iPhone confidently and does not need to be talked down to.

No subscription, no account, no data leaving the device. Built with SwiftUI and iCloud. Personal health tracking, the way it should be.

Prick — Glucose Monitor