Terms of Use

Vialog · last updated 17 August 2026

Vialog is a reconstitution calculator and an injection log. It does the arithmetic in front of you and keeps the record you enter. It never tells you what to take. By using the app you agree to these terms.

What Vialog is, and what it is not

Vialog converts figures you give it — what is in a vial, the water you add, your dose — into the units to draw on your syringe, and stores the doses, sites and notes you log. It is not a medical device. It does not diagnose, treat, cure or prevent any condition, it is not medical advice, and it never recommends a compound, a dose or a protocol. Every value in the app was entered by you.

Your responsibility for the numbers

Vialog shows its working so you can check it rather than trust it, and it refuses to produce a number your syringe cannot draw. Even so, you are responsible for verifying every figure before you act on it, and for the consequences of what you inject. Always consult a qualified healthcare professional about your health and before making any medical decision. If you are unsure of a result, do not rely on it.

Eligibility

Vialog is intended for adults aged 18 or over. It is not directed to children.

The free app and Vialog+

• The reconstitution calculator and a first tracked compound, with its log, reminders, backup and export, are available at no cost.
• Vialog+ is an optional, auto-renewing subscription that unlocks tracking several compounds at once and the picture across time.
• All purchases and renewals are handled entirely by the App Store or Google Play. We never see your card or billing details. A subscription renews unless cancelled at least 24 hours before the period ends, and is managed and cancelled in your store account settings. Any free trial converts to a paid period unless cancelled before it ends.

Apple & Google terms also apply

On iOS your use is additionally governed by Apple's Licensed Application End User License Agreement (the standard EULA) at apple.com/legal/internet-services/itunes/dev/stdeula; on Android, by the Google Play Terms of Service. Where those store terms give a user more rights than these terms, the store terms prevail for that store.

Acceptable use

Use Vialog for your own record-keeping. Do not attempt to break, reverse-engineer or misuse the app, and do not use it in any unlawful way.

Your data

Your record lives on your device. How it is stored, backed up and exported is described in the Privacy Policy. You own your record and your backups; keeping and deleting them is in your hands.

The app is provided “as is”

Vialog is provided without warranties of any kind, to the fullest extent the law allows. We do not warrant that it will be error-free or uninterrupted. To the extent permitted by law, we are not liable for any loss arising from your use of, or inability to use, the app, or from any decision made on the basis of a figure it displays. Nothing in these terms limits any liability that cannot be limited by law, including for death or personal injury caused by negligence.

Changes to the app and to these terms

We may update the app and revise these terms. Material changes will be reflected on this page with a new date. Continuing to use Vialog after a change means you accept the revised terms.

Contact

Questions about these terms? Email vialogapp@protonmail.com. We read everything and we answer.