Last updated: 14 August 2026
In short. Use our products lawfully and they remain yours to use. Subscriptions renew until you cancel, and you cancel them wherever you bought them. Your content stays yours. Keep your own backups of anything you cannot afford to lose.
These Terms of Use form an agreement between you and Project Null0, a software studio based in Poland ("Project Null0", "we", "us"). They apply when you use any of our applications, web services or websites (each a "Service"), including Radar: Tasks & Habits, RateCollector, our other applications, and this website.
By installing, opening or using a Service you accept these Terms. If you do not accept them, do not use the Service.
Some Services publish additional product-specific terms. Where they exist, they apply alongside these Terms, and the product-specific document governs on any point where the two differ.
When you obtain an application through the Apple App Store or Google Play, that platform's own terms also apply to the download and to any purchase you make there. Apple and Google are not parties to these Terms and are not responsible for the Service. Where Apple's Standard End User Licence Agreement applies, it governs the licence to the application to the extent it conflicts with these Terms.
You must be old enough to enter into a binding contract where you live, and old enough to consent to online services in your country. If you use a Service on behalf of an organisation, you confirm you are authorised to accept these Terms for it.
Some Services can be used without an account. Where an account is required or offered, you are responsible for keeping your sign-in credentials secure and for activity that happens under your account. Tell us promptly if you believe your account has been compromised.
You may delete your account where the Service offers that option, or by writing to us. Deleting an account removes the data held under it and cannot be undone.
We grant you a personal, non-exclusive, non-transferable, revocable licence to use the Services for your own purposes, and for your organisation's internal business purposes where you subscribe on its behalf. You may not copy, sell, sublicense, rent or redistribute a Service, reverse engineer it except to the extent the law expressly permits, or remove any notices from it.
Depending on the Service, a paid subscription may be purchased through the Apple App Store, Google Play, or on the web. Web purchases are processed by Stripe, which acts as merchant of record and is responsible for taking payment and handling applicable tax.
A subscription is managed where it was purchased. That is the only place it can be cancelled, changed, refunded or have its payment method updated:
Where a Service is available on several platforms, an active subscription unlocks it on all of them once you sign in with the same account. Because the stores cannot cancel one another's billing, you should not buy the same subscription twice through different channels; our applications will not offer you a second purchase while an existing subscription is active.
Subscriptions renew automatically at the end of each period at the then-current price, until cancelled. Cancel at least 24 hours before the period ends to avoid the next charge. Cancelling stops future renewals; access continues until the end of the period you already paid for.
Where a free trial is offered, it is available to eligible new subscribers only, and eligibility is determined by the store or channel. Unless you cancel before the trial ends, it converts into a paid subscription at the stated price.
Prices are shown before you confirm a purchase and may vary by country and over time. Applicable taxes are added or included as the checkout indicates. Refunds for purchases made in a mobile app are handled by Apple or Google under their policies. For web purchases, statutory withdrawal and refund rights apply, and you can contact us to start a request.
Anything you create or upload in a Service remains yours. You grant us only the limited permission needed to host, process, transmit and display it so we can operate the Service for you. You are responsible for having the rights to the content you provide and for it being lawful.
Where a Service offers export or backup, you are responsible for keeping your own copies of anything you cannot afford to lose.
You may not:
Some Services include features that generate content with the help of AI models. Generated output can be inaccurate, incomplete or unsuitable, and you are responsible for reviewing it before you rely on or publish it. You must not use these features to produce content that is deceptive, unlawful, or misrepresents genuine experience where honesty is required.
Our Services rely on third parties for hosting, authentication, payments and related functions, and may link to sites we do not control. We are not responsible for third-party services or their content, and their own terms and policies apply to your use of them.
The Services, their software, design, branding and content are owned by Project Null0 or our licensors and are protected by intellectual property law. These Terms grant you a licence to use the Services, not ownership of them. You may not use our names or logos without permission.
We aim to keep the Services available and working, but we do not guarantee uninterrupted or error-free operation. We may update, change or discontinue features, and may withdraw a Service. Where a withdrawal materially affects a paid subscription, we will give reasonable notice and, where appropriate, a pro-rata refund for the unused period.
The Services are provided "as is" and "as available". To the extent permitted by law, we exclude implied warranties, including fitness for a particular purpose and uninterrupted availability.
To the extent permitted by law, we are not liable for indirect or consequential loss, loss of profits, or loss of data where you could reasonably have kept your own copy. Our total liability arising out of or relating to a Service is limited to the amount you paid us for that Service in the twelve months before the event giving rise to the claim.
Nothing in these Terms limits liability that cannot be limited by law, including liability for death or personal injury caused by negligence, or for fraud. If you are a consumer, you keep all mandatory rights available to you under the law of your country of residence, and nothing here reduces them.
You may stop using a Service at any time. We may suspend or terminate access if you materially breach these Terms, if required by law, or to protect the Service or other users. Where the circumstances allow, we will give notice and an opportunity to put things right first. Terms that by their nature should survive termination will survive it.
These Terms are governed by the laws of Poland, without regard to conflict-of-law rules. The courts of Poland have jurisdiction over disputes arising out of or relating to these Terms or the Services.
If you are a consumer resident in the European Economic Area or the United Kingdom, you keep the benefit of mandatory protections under the law of your country of residence and may also bring proceedings in the courts there. Before starting formal proceedings, please contact us so we can try to resolve the matter directly.
We may update these Terms when our Services, providers or legal obligations change. The revision date at the top always reflects the current version. Where a change materially affects you, we will give notice in the Service or by email before it takes effect. Continuing to use a Service after that means you accept the updated Terms.
Project Null0, Poland — contact@projectnull0.com