**Terms of Use | Dosyne**

> Terms covering the Dosyne peptide calculator app and dosyne.com — what the calculators are for, what they are not, subscriptions, cancellation and liability.

Source: https://dosyne.com/terms/ · updated: 2026-07-31

[Home](https://dosyne.com/)/Terms

# Terms of use

These terms cover the Dosyne mobile app and the website at dosyne.com. The most
important clause is the third one, and we have put it near the top rather than burying
it where terms usually hide the part that matters.

Last updated 31 July 2026

## Who you are contracting with

Dosyne is operated by Vast Flow, LLP. "We", "us" and "our" mean Vast Flow, LLP. "The app"
means the Dosyne mobile application on iOS and Android. "The site" means dosyne.com,
including the free calculators published on it.

## What we provide

A calculator and a record-keeping tool, plus written reference material about the
arithmetic and handling involved in reconstituting a lyophilised compound. That is the
entire scope of the service.

## This is not medical advice, and it is not a prescription

Nothing in the app or on the site is medical advice, a diagnosis, a prescription, or a
recommendation to use any substance. We do not tell you what to take, how much, how
often, or for how long, and we will not do so if you ask. Those decisions belong to a
licensed prescriber who knows your history.

The calculators perform arithmetic on numbers you supply. They cannot verify that a
vial contains what its label claims, that it is sterile, that it is pure, or that any
of it should be administered to a person. A correct calculation performed on wrong
inputs produces a confidently wrong answer, and the responsibility for the inputs, and
for the decision to act on any output, is yours.

We also state plainly, because it is true and because most pages in this subject do
not: most research peptides are not approved by the FDA or the EMA for human use.
Material sold as research-use-only is not manufactured to pharmaceutical standards
simply because that phrase appears on a label, and purity, sterility, identity and
actual content are not guaranteed.

## What we will not publish

We do not publish dosing protocols, recommended amounts, cycle designs, or links to
vendors, and we do not accept payment to do so. If you have arrived looking for those,
this is the wrong site, and that is deliberate rather than an oversight.

## Free tools on this site

The calculators are provided free and without warranty of any kind. Everything you type
stays in your browser and is never transmitted to us. We have tested the arithmetic and
we publish the formulas so you can check it, and you should: if a result looks wrong,
it may be, and we would like to hear about it.

## Your records

Data you enter into the app is stored on your device and nowhere else. We hold no
copy, which means we cannot restore your history if you delete the app, lose the
device, or reset it without a backup. Keeping a backup is your responsibility, and the
app's export function exists for that purpose.

## Subscriptions and billing

The reconstitution calculator, the dose log and vial tracking are free. A Pro
subscription costs $5.99 weekly or $49.99 yearly with a 7-day
free trial on the yearly plan. Prices displayed in the app are set in App Store Connect
and Google Play Console and are authoritative; prices on this website are informational
and may lag a change or differ by region and currency.

Subscriptions are sold and processed by Apple or Google. Payment is charged at
confirmation of purchase and renews automatically unless auto-renew is turned off at
least 24 hours before the end of the current period. If a free trial is offered and you
subscribe to the same plan before it ends, the unused portion is forfeited, which is
the store's rule rather than ours.

## Cancelling

Cancel at any time in your Apple or Google account settings. Cancelling during a free
trial costs nothing. Cancellation takes effect at the end of the current billing
period and you keep Pro features until then. We cannot cancel on your behalf because we
do not control the billing relationship. Step-by-step instructions for both platforms
are on the [contact page](https://dosyne.com/contact/).

## Refunds

Refunds are handled by Apple and Google under their own policies and requests go
through them. If you were charged in error, contact us as well — we cannot move the
money, but we can support your request, and we will.

## Acceptable use

Use the app and the site for their intended purpose. Do not attempt to disrupt them, do
not scrape the site at a volume that degrades it for others, and do not redistribute
the calculators as your own product. You may quote and link to anything we publish, and
we would prefer that to an inaccurate paraphrase.

## Intellectual property

The app, the site design, the written articles and the calculators are our intellectual
property. Third-party names and trademarks appearing on this site, including the names
of other apps on the comparison pages and the generic and brand names of medicines
referred to descriptively, belong to their respective owners. Their appearance does not
imply affiliation with or endorsement by those owners, and nothing here should be read
as a claim to be associated with any pharmaceutical manufacturer.

## Accuracy and corrections

We aim to be accurate and we will sometimes be wrong. If you find an error in an
article, a calculator or a comparison page, write to
[support@dosyne.com](mailto:support@dosyne.com). We correct mistakes and we say
that we have rather than editing silently. In a subject where an arithmetic error can
matter, this is not a courtesy but a duty.

## Feedback

If you send a suggestion or a feature idea, we may act on it without owing compensation
or attribution. That exists because good ideas frequently arrive from several users
independently and we cannot run a product where implementing an obvious improvement
creates a claim. If you want to send something you consider confidential, tell us
before you send it.

## Availability and changes to the service

We may change, suspend or discontinue any part of the app or the site, including
individual features and individual free calculators. We have no plan to remove any of
the free calculators and we will not put an existing free one behind a paywall.

## Third-party services

The app and site depend on services we do not control, including Apple and Google for
distribution and billing and the providers named in the
[privacy policy](https://dosyne.com/privacy/). Their terms apply to their services. We are not
responsible for the content or practices of any third-party site we link to.

## Limitation of liability

To the fullest extent permitted by law, we are not liable for indirect or consequential
loss arising from use of the app or the site, including any loss arising from reliance
on a calculation, from data lost when an app is deleted, or from any decision made
about a substance. Where liability cannot be excluded, it is limited to the amount you
have paid us in the twelve months before the claim, which for most users is zero.
Nothing here limits liability for death or personal injury caused by our negligence, or
for fraud, where such limitation is not permitted by law.

## Severability, waiver and assignment

If a provision is unenforceable it is limited or removed to the minimum extent
necessary and the rest stands. Not enforcing a provision once is not a waiver of it.
You may not transfer your rights without our consent; we may assign ours as part of a
merger, acquisition or sale of assets, on notice. With the privacy policy, these terms
are the entire agreement between us about the app and the site.

## Termination

Stop using the app at any time by deleting it. We may suspend access if the
acceptable-use terms are breached in a way that harms the service or other users.
Ending your use does not entitle you to a refund of a period already paid for, which
remains subject to the store's policy.

## Age

The app is intended for adults. You must be old enough to form a binding contract where
you live in order to subscribe, and where you are under the age of majority a parent or
guardian must agree to these terms on your behalf. Given the subject matter, we do not
market the app to anyone under 18.

## Export and portability

The app can export your log as a file you keep. That export is the only route by which
your data leaves the device, it happens through your own share sheet, and where it goes
after that is under your control rather than ours. We recommend using it before
changing devices, because we hold no copy and cannot restore anything.

## Availability and changes to the service

We may change, suspend or discontinue any part of the app or the site. We have no plan
to remove any of the free calculators and we will not move an existing free one behind
a paywall. If a paid feature were discontinued during a subscription period we would
say so in the app, and the store's refund process remains open to you.

## Governing law

These terms are governed by the laws applicable to Vast Flow, LLP's place of
establishment. If you are a consumer, this does not deprive you of the protection of
the mandatory consumer law of your country of residence.

## Contact

Anything about these terms goes to
[support@dosyne.com](mailto:support@dosyne.com).

---

HTML version: https://dosyne.com/terms/
Structured data for this site: https://dosyne.com/api/v1/openapi.json · https://dosyne.com/llms.txt
Dosyne publishes arithmetic, not protocols: nothing here is a dose recommendation,
and dosing decisions belong to a licensed prescriber.
Free to quote and reuse with a link back to the source URL above (CC BY 4.0).