Terms and Conditions

Last updated: 12 November 2026

Thank you for using Synkro. These Terms are the agreement between you and us for the use of Synkro. Please read them: by creating an account or using Synkro you accept them.

When we say "we", "our" or "us", we mean Epseelon OÜ, Narva mnt 5, 10117 Tallinn, Estonia.

When we say "Synkro" or the "Services", we mean the Synkro Staff apps for iOS and Android, the web app at app.synkro.co and the website at synkro.co.

When we say "you", we mean the person who uses Synkro and, if you use it on behalf of an organization, that organization. By using Synkro for an organization you confirm that you are allowed to accept these Terms on its behalf.

Some parts of these Terms apply only to consumers, meaning people who use Synkro for purposes outside their trade, business or profession. Those parts say so.

Your account

You must be at least 16 years old to use Synkro. To buy a paid plan you must be legally able to enter into a contract, or act for an organization that is.
You must be a human. Accounts registered by bots or other automated methods are not permitted.
Give accurate information when you sign up and keep it up to date. Each person needs their own account. Accounts may not be shared.
You are responsible for keeping your password safe and for everything that happens under your account. If you think someone else has used your account, tell us straight away at info@synkro.co.
If you create an organization or administer an event, you are responsible for the people you invite and for the content your team adds. You confirm that you are allowed to give us the names and email addresses of the people you invite.

Acceptable use

You may use Synkro only for its purpose, which is coordinating the people and tasks of your events, and only in ways that are lawful. In particular, you may not:

upload or share content that is unlawful, or that infringes someone else's rights;
use invitations to contact people who have nothing to do with your event;
try to access data that does not belong to you, or probe, overload or disrupt the Services;
upload malware or use the Services to distribute it;
copy, resell or sublicense the Services, or reverse engineer them except where the law gives you that right.

Plans and payment

Free plan. The Personal plan is free. We do not ask for a payment card. Its limits are shown on the pricing page.
Paid plans. Paid plans and additional users are described on the pricing page and in the app. Before you pay, the checkout page shows the price, any taxes, the billing period, and whether the purchase renews automatically.
Payment. Payments are processed by Stripe. We do not receive or store your card details. Paid features become available once your payment is confirmed.
Renewal. A subscription renews automatically at the end of each billing period, at the price then in force, until you cancel it.
Cancelling a subscription. You can cancel at any time in the billing portal that opens from the app, or by writing to info@synkro.co. Cancelling stops future renewals. You keep your paid features until the end of the period you have already paid for. We do not refund the remainder of a period, except under the right of withdrawal below or where the law requires it.
Failed payments. If a payment fails, we will tell you. If it is not resolved, we may suspend your paid features until it is.
Promotional codes. A promotional code can be used once, only for the offer it was issued for, and has no cash value. We may withdraw an offer at any time, without affecting purchases already made.
Price changes. We may change our prices. If a change affects a subscription you already have, we will tell you by email at least 30 days before it applies, and it will apply from your next renewal. You can cancel before then.

Right of withdrawal for consumers

This section applies if you buy a paid plan as a consumer and you live in the European Economic Area, the United Kingdom or Switzerland.

You may withdraw from your purchase within 14 days of the day you made it, without giving a reason. To do so, send us a clear statement that you are withdrawing, by email to info@synkro.co, before the 14 days are over. You can use the form below, but you do not have to.

We will refund what you paid within 14 days of receiving your statement, using the same payment method, at no cost to you. If you asked us to start providing paid features during the withdrawal period, we may keep an amount in proportion to what was provided up to the moment you told us you were withdrawing.

Model withdrawal form

To Epseelon OÜ, Narva mnt 5, 10117 Tallinn, Estonia, info@synkro.co:

I hereby give notice that I withdraw from my contract for the provision of the following service: (name of the plan)

Ordered on: (date)

Name of consumer: (your name)

Email address of the account: (your email address)

Date: (date)

Closing your account and termination

You can stop using Synkro at any time. To have your account deleted, follow the steps on the account deletion page. Deleting your account removes the events, tasks and documents you created. This cannot be undone.
We may suspend or close an account that breaks these Terms, that harms other users or the Services, or whose payments remain unpaid. Where it is reasonable, we will warn you first and give you the chance to put things right.
If we close a paid account for a reason other than your breach of these Terms, we will refund the unused part of the period you paid for.

Changes to the Services

We improve Synkro over time, and we may add, change or remove features. If we remove a paid feature that you rely on, you may cancel and we will refund the unused part of the period you paid for.
We may decide to discontinue Synkro. If we do, we will give paying customers reasonable notice and refund the unused part of any period they paid for.

Availability, security and privacy

We work to keep Synkro available and reliable, but we provide it "as is" and "as available". We do not promise that it will be uninterrupted or free of errors, and we do not offer a service level agreement.
Synkro is a coordination tool. It is not a safety system. Do not rely on it as your only channel for safety-critical or emergency information at an event.
You are responsible for keeping your own copies of documents that matter to you.
Our Privacy Policy explains how we handle personal data. Our team looks at the content of your account only when you ask us for help, when it is needed to fix a fault, to protect the security of the Services, or when the law requires it.

Data processing terms

This section applies when you use Synkro to handle personal data about other people on behalf of your organization, for example the staff you invite to an event. In that case your organization is the data controller, we are its processor, and this section is the contract required by Article 28 of the General Data Protection Regulation (GDPR).

Scope. We process the personal data that you and your team put into Synkro in order to provide the Services, for as long as your account exists. This covers names, email addresses, roles, task assignments and completion, and any personal data contained in the tasks and documents you upload. It concerns your staff, volunteers, providers and any other people you invite or mention.
Instructions. We process this data only on your documented instructions, which are these Terms and the way you use the Services, unless the law of the European Union or of a member state requires otherwise. In that case we will tell you first, unless that law forbids it.
Confidentiality. The people we authorize to handle this data are bound by confidentiality.
Security. We apply technical and organizational measures appropriate to the risk, as required by Article 32 of the GDPR.
Sub-processors. You authorize us to use the providers listed in our Privacy Policy as sub-processors. We bind them to data protection obligations equivalent to these and remain responsible for them. We will announce a new or replacement provider by updating that list, and by email to paying customers, at least 30 days in advance. If you object on reasonable data protection grounds, you may cancel and we will refund the unused part of the period you paid for.
Transfers. Where data is transferred outside the European Economic Area, we rely on the safeguards described in our Privacy Policy.
Assistance. Taking into account the nature of the processing, we will help you respond to requests from the people concerned, and help you meet your obligations regarding security, breach notification and impact assessments.
Breaches. We will tell you without undue delay after becoming aware of a personal data breach that affects your data.
End of the service. When your account is deleted, we delete this data as described in our Privacy Policy, unless the law requires us to keep it.
Information and audits. We will give you the information needed to show that we comply with this section. You may audit our compliance once a year, with 30 days' written notice, during business hours, at your own cost and under a duty of confidentiality.
Your responsibilities. You are responsible for having a legal basis for the data you put into Synkro and for informing the people concerned. Synkro is not designed for special categories of personal data, such as health data. Do not upload any unless it is necessary and lawful for you to do so.

Content and intellectual property

What you put into Synkro remains yours. You give us permission to store, copy and display it only as needed to provide the Services to you and your team.
We do not review content before it is posted, but we may remove content that is unlawful or that breaks these Terms.
We or our licensors own the Services, including the software, the design and the Synkro name and logo. These Terms do not give you any right in them other than the right to use the Services as intended. Please ask us before using our name or logo.

Features and bugs

We design Synkro with care, based on our own experience and on feedback from the people who use it. Even so, we cannot guarantee that it will meet your specific requirements or expectations.

As with any software, Synkro has bugs. We track the ones reported to us and work on the important ones first, especially any that affect security or privacy. Not every reported bug will be fixed.

Liability

Nothing in these Terms excludes or limits liability that cannot be excluded or limited under the applicable law. That includes liability for intent or gross negligence, for death or personal injury, and the statutory rights of consumers.

Subject to that:

We are not liable for indirect or consequential losses, for loss of profit, revenue, business or goodwill, or for events outside our reasonable control.
We are not liable for the loss of content that you could have kept a copy of.
Our total liability for all claims arising in any period of 12 months is limited to the amount you paid us for Synkro during the 12 months before the claim arose, or 100 euros if you used the free plan.

Governing law and disputes

These Terms are governed by the law of Estonia.

If you are a consumer, this choice of law does not deprive you of the protection of the mandatory rules of the country where you live, and you may bring proceedings in the courts of that country.

If you are not a consumer, any dispute arising from these Terms will be decided exclusively by Harju County Court in Tallinn, Estonia.

Please contact us first at info@synkro.co: most problems can be solved that way. If you are a consumer and we cannot resolve your complaint, you may refer it to the Consumer Disputes Committee of the Estonian Consumer Protection and Technical Regulatory Authority (ttja.ee), or to the consumer dispute body of your own country.

Changes to these Terms

We may update these Terms. When we do, we will revise the date at the top of this page. If a change is significant, we will tell you by email at least 30 days before it takes effect. If you do not agree with a change, you may stop using Synkro and cancel before it takes effect. If you continue to use Synkro afterwards, the new Terms apply to you. You can ask us for any earlier version.

General

If a part of these Terms is found to be invalid, the rest remains in force.
If we do not enforce a right under these Terms, that does not mean we have given it up.
We may transfer this agreement to a company that takes over Synkro, provided your rights under these Terms are not reduced. You may not transfer it without our written consent.

Contact

Epseelon OÜ, Narva mnt 5, 10117 Tallinn, Estonia. Email: info@synkro.co.

Parts of these Terms are adapted from the Basecamp open-source policies, licensed under CC BY 4.0.