Terms and conditions
Version 2.0 · Last updated 26 August 2026
Ronin records what you write down. It does not interpret it, and it is not part of your treatment. These terms cover using the app and this website.
What Ronin is
Ronin is a diary for adults with type 1 diabetes. You write down glucose, insulin, carbs and notes, and the app stores them, shows them back to you and lets you find them again. That is the whole of it. It is not a medical device, not a dosing calculator and not a monitoring service. It does not alarm, does not predict, and does not tell you what a number means.
Who it is for
Ronin is written for adults who manage their own diabetes. It is not made for children, and it has none of the things a child’s app needs. If you are looking for one for a child, DiabetesNinja is the sibling app from the same people. Nothing here stops a young person using Ronin, but the app assumes you are the one making the decisions.
No medical advice
Ronin never suggests a dose and never gives medical advice. Nothing in the app is a recommendation, and nothing it shows you is a reason to change what you do. Decisions about your treatment are yours together with your care team. If you are unsure about a value or feel unwell, contact your care team or seek care. Do not wait to write something down first.
Estimates are estimates
Carb figures from the app’s food list, or from weighing something on a kitchen scale, are estimates. Check them and correct them before you write them down. The target range is a display setting you choose yourself, not a prescription: it draws a faint band and enters no calculation, and values are never graded, coloured or scored. Reading the carbs from a photo of a plate is not built. The app will tell you so where you would use it, and it will never show you a number it made up.
Free, and as it is
The app costs nothing, has nothing to buy inside it and is provided as it is, without warranty of any kind. Venueve AB is not liable for loss that follows from using it, including entries that are lost, a phone that fails or a backup that cannot be restored. Keep your own copies of anything you need to keep. None of this limits liability that cannot be limited under Swedish law, which includes liability for death or personal injury caused by negligence and liability for a defective product.
Your responsibility
You are responsible for what you write down and for the device you write it on. Ronin cannot recover a diary it never had a copy of, so if the phone is lost or wiped, the diary goes with it unless your phone’s own backup had it. If you share an export, you are responsible for where you send it and for what happens to it afterwards.
What you may do with the app
You may install Ronin and use it, on as many of your own devices as you like, for as long as you want to. That right is personal to you and cannot be passed on. You may not resell it, republish it, or take it apart and build something from it. The source code is not public. The name Ronin and the app’s mark stay ours. Anything you write in the diary is yours; we have no claim on it and no copy of it.
If the app changes or stops
Ronin is free, and we make no promise that it will always be available or that it will keep every feature it has today. It can change, and it can be withdrawn from the stores. Your diary is on your phone rather than on a server of ours, so it does not disappear when we stop: it stays where it is, and the CSV export keeps working. That is a large part of why the app is built this way.
Personal data
Ronin has no account and collects nothing from you. What little personal data reaches us, and what your phone’s backup and the stores do with the app’s data, is set out in the privacy notice linked at the foot of this page. It is worth reading: it is short, and it is specific about the few places where something leaves the phone.
Changes to these terms
If these terms change, the version and the date at the top of this page change with them. Carry on using Ronin and the terms as they stand then are the ones that apply. A change that matters is not made quietly: the version number is there so you can tell.
Governing law and disputes
These terms are governed by Swedish law, and disputes go to the Swedish general courts. If you are a consumer, this does not take away the protection you have under the mandatory law of the country you live in, and you can still bring a case where that law allows. A consumer in Sweden can also take a dispute to Allmänna reklamationsnämnden (ARN). Before any of that, write to us: most things are quicker to fix that way.
Who publishes Ronin
Questions about these terms, or anything else, go to the same address. We answer in Swedish and English.
Venueve AB
Org. no. 556872-6326
Limhamn, Sweden
support@diabetesninja.se