Renabook: Dialysis Diary
Weight, BP and fluid records
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Your paper dialysis book, all in one place.
Renabook is a simple log for life on dialysis: weight and blood pressure morning and evening, and the fluid removed on dialysis days. No sign-up. No ads. Everything stays on your device.
■ Cards that match the day
On dialysis days you record pre- and post-dialysis weight and the fluid removed. On other days, weight and blood pressure morning and evening. Set your dialysis days once and today's cards line up for you.
■ The difference from your dry weight, as a number
Enter the DW your doctor gave you and the weight card shows the difference. It makes no judgement and gives no warnings — the number is yours to take to your clinic.
■ Charts and a two-week table
Weight, blood pressure, and lab values become charts. The last two weeks appear in the same table layout as a paper dialysis book.
■ One page for your clinic
Hand over your records as a clinic summary (PDF). CSV export is included.
■ An emergency and travel card
Keep your treatment settings — access, dialyzer, blood flow rate, session length — on a card you can show staff at another unit, in large text, even with no signal.
■ Reminders that know your schedule
Measurement reminders morning and evening, and a reminder the night before a dialysis day. No measurement reminders on dialysis days, since you are measured at the unit.
Free: daily measurements, the access check, lab values, one emergency card, and the last 90 days of the charts
Pro (a one-time purchase, no subscription): the clinic PDF, CSV export, the full chart history, and managing other people
Note: this app is a log and reminder for life on dialysis. It is not a dialysis record book issued by a medical provider, and it does not diagnose, treat, or provide medical advice. Always talk to the doctors and staff at your clinic about your weight, your blood pressure, and your treatment.
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The developer, RAINBOW TREE LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- User Content
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- RAINBOW TREE LLC
- Size
- 17.2 MB
- Category
- Medical
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Pro (Lifetime) $5.99
- Copyright
- © 2026 RAINBOW TREE LLC