See what's happening between lab results.
Your kidney numbers go up and down. Months pass between appointments. ren is an AI companion that helps you see trends, understand fluctuations, and walk into your next visit with clarity — not confusion.
Coming soon to iOS
The in-between
You know something is off.
You just can't tell which direction it's going.
Your creatinine was 1.4 last time. Now it's 1.6. Is that a trend, or just a bad day?
Your eGFR dropped 5 points. Your doctor says "let's recheck in three months." Three months is a long time to wonder.
You changed your diet, started walking more, cut back on sodium. But you have no way of knowing if any of it is making a difference until the next draw.
The uncertainty between visits is real. You shouldn't have to navigate it alone.
The problem isn't lack of data.
It's lack of clarity over time.
A single lab result is a snapshot. It tells you where you are today, but not where you're headed. What you need is a companion that helps you see context — how this number compares to last time, and the time before that, and whether the changes you're making are showing up in the data.
That's why we built ren — an AI companion for the in-between.
What ren does
Your kidney lab results,
organized into a story.
ren takes scattered lab results and turns them into a clear timeline. Its AI reads your history and helps you understand what's changing, what's stable, and what questions to bring to your next appointment.
Trends, not just numbers
See how your creatinine, eGFR, and proteinuria change across months and years. One result is a data point. Several results are a pattern.
AI that explains, not alarms
Not every change is meaningful. ren's AI helps you understand which shifts matter and which are normal variation — reducing unnecessary worry.
Lifestyle as context
Optionally note changes in diet, hydration, or medication timing. Not as a tracker — but so you can see what might correlate with your numbers.
How it works
Three steps to clarity.
Enter your lab results
Add results as you get them — creatinine, eGFR, BUN, proteinuria, whatever your doctor orders. Takes less than a minute.
Ask ren what's changing
ren's AI organizes your results, highlights trends, and explains what the movement means in plain language — no medical jargon, no guesswork.
Go to your appointment prepared
Bring a clear picture of your trajectory. Ask specific questions. Your doctor gets a patient who understands their own data.
A note on trust
ren is not a doctor. And it never pretends to be.
ren uses AI to help you understand your lab results — but it does not diagnose, predict outcomes, or provide medical advice. It explains patterns in your own data so you can see what you'd otherwise miss.
The goal is simple: help you feel more prepared when you talk to your doctor. Better questions lead to better conversations. Better conversations lead to better care.
Your nephrologist is still your guide. ren is just a thoughtful companion that helps you show up as a more informed participant.
Stop guessing between lab draws.
Join the waitlist and be the first to try ren when it launches on iOS.
No spam. Just a heads-up when it's ready.