Cookie Notice
This Notice is issued by Zero Gravity Tech Ltd ("Zero Gravity", "we", "us" and "our"). This notice was most recently updated on 8th April 2026.
Websites and applications to which this Notice applies
This Notice applies to the following websites and applications operated or controlled by Zero Gravity: www.zerogravity.co.uk, app.zerogravity.co.uk, tutor.zerogravity.co.uk, and the Zero Gravity iOS and Android mobile applications (collectively, the "Sites").
What are cookies?
Cookies are small text files that may be stored on your device when you visit a website. They are generally used to make websites function properly, keep track of your movements within the website, remember your login details, preferences, interests, and more.
The cookies used on our Sites have been categorised based on the guidelines found in the ICC (International Chamber of Commerce) UK Cookie guide. We use the following categories:
Category 1 — Strictly Necessary Cookies
These cookies are essential to enable you to browse around our Sites and use their features. Without these cookies, our services cannot be provided. These cookies do not require your consent.
Category 2 — Performance and Analytics Cookies
These cookies collect information about how you use our websites — for instance, which pages you go to most, the time spent there, and general website performance. This data may be used to help improve our Sites and make them easier for you to navigate. All information these cookies collect is aggregated and anonymous. These cookies require your consent before they are placed on your device.
Category 3 — Functionality Cookies
These cookies allow our websites to remember choices you make while browsing in order to increase usability (e.g. language, region, login, fonts, text size etc.). The information these cookies collect will not personally identify you, and they cannot track your browsing activity on non-Zero Gravity sites. These cookies require your consent before they are placed on your device.
Category 4 — Targeting/Advertising Cookies
These cookies collect information about your browsing habits in order to make advertising relevant to you and your interests. These cookies require your consent before they are placed on your device.
Additionally, cookies can be classified as:
- First-party cookies: Placed by the website you are visiting.
- Third-party cookies: Placed by a website other than the one you are visiting. We do not control the collection or use of data by third parties.
Cookies can also vary in lifespan:
- Session cookies: Temporary cookies erased once you close your browser.
- Persistent cookies: Remain on your device until you manually delete them or until they expire as specified in the cookie file.
More information on all aspects of cookies can be found on www.allaboutcookies.org. Please note that Zero Gravity has no affiliation with, and is not responsible for, this third-party website.
Why do we use cookies?
We may use cookies to:
- Distinguish between visitors.
- Improve the use and the functionality of our Sites.
- Tailor our Sites and products to your needs and preferences.
- Analyse how our Sites are used and compile anonymous, aggregate statistics.
Cookies used on our AI Services (tutor.zerogravity.co.uk and app.zerogravity.co.uk)
Our AI Services are designed for students, including users under 18. The following cookies and similar technologies are used on these services.
| Name | Party | Lifespan | Category | Purpose |
|---|---|---|---|---|
| _zero_gravity_session | First Party | Session | Strictly Necessary | Maintains your login session. A hashed value — does not contain personal data. |
| CSRF token | First Party | Session | Strictly Necessary | Protects against cross-site request forgery attacks. |
| cf_clearance | Third Party (Cloudflare) | Session | Strictly Necessary | Issued by Cloudflare Turnstile to verify you are not a bot during login and signup. |
| theme_preference | First Party | 1 year | Strictly Necessary | Remembers your display preferences (e.g. light/dark mode). |
Non-essential
| Name | Party | Lifespan | Category | Purpose |
|---|---|---|---|---|
| AppSignal JS | Third Party (AppSignal) | Session | Performance Monitoring | Monitors application performance and identifies technical errors. Collects anonymous technical data only. |
| Progressier | Third Party (Progressier) | Persistent | Functionality | Enables "install as app" functionality for mobile and desktop devices. |
Cookies used on our marketing website (www.zerogravity.co.uk)
The following cookies may be placed when you visit our marketing website. Non-essential cookies require your consent via our cookie banner before they are activated.
Strictly Necessary
| Name | Party | Lifespan | Purpose |
|---|---|---|---|
| _zero_gravity_session | First Party | Session | Maintains your login session |
| CRAFT_CSRF_TOKEN | First Party | Session | Protects against cross-site request forgery attacks |
| CraftSessionId | First Party | Session | Maintains your session on the website |
| hasConsent | First Party | 1 year | Records whether you have made a cookie consent choice |
Performance and Analytics (require consent)
| Name | Party | Lifespan | Purpose |
|---|---|---|---|
| _ga | Third Party (Google) | 2 years | Google Analytics — tracks user behaviour across the site in aggregated, anonymous form |
| _ga_ID | Third Party (Google) | 2 years | Google Analytics 360 — distinguishes unique users |
| ph_phc_ID_posthog | Third Party (PostHog) | 1 year | Product analytics — unique identifier for tracking site usage patterns |
| ahoy_visitor | First Party | 1 month | Tracks page views and user activity in aggregated form |
Functionality (require consent)
| Name | Party | Lifespan | Purpose |
|---|---|---|---|
| intercom-id-ID | Third Party (Intercom) | 1 year | In-platform messaging — unique ID to differentiate users |
| intercom-session | Third Party (Intercom) | Session | In-platform messaging — maintains your current messaging session |
| intercom-device-id | Third Party (Intercom) | 9 months | In-platform messaging — unique device identifier, refreshed on each interaction |
Targeting and Advertising (require consent)
| Name | Party | Lifespan | Purpose |
|---|---|---|---|
| _fbp | Third Party (Meta) | 3 months | Meta pixel — tracks users referred from Meta platforms |
| _gcl_au | Third Party (Google Ads) | 90 days | Google Ads conversion tracking |
| _tt_enable_cookie | Third Party (TikTok) | 13 months | TikTok pixel — checks whether cookies can be placed |
| _ttp | Third Party (TikTok) | 13 months | TikTok pixel — tracks users referred from TikTok |
Please note that the processing of your personal data in connection with cookies, and for other purposes, is governed by our Privacy Policy.
In addition, we may also use web beacons (or clear GIFs) and other similar technologies in addition to, or in combination with, cookies. A web beacon is typically a transparent graphic image (usually 1-pixel x 1-pixel) that is placed on a website or in an email and helps us to understand the behaviour of visitors to our Sites.
Google Analytics
Our marketing website uses Google Analytics, a web analytics service provided by Google, Inc. ("Google"). Google Analytics uses cookies to help analyse how users use the site. The information generated by the cookie about your use of the website (including your IP address) will be transmitted to and stored by Google on servers in the United States. Google will use this information for the purpose of evaluating your use of the website, compiling reports on website activity, and providing other services relating to website activity and internet usage. Google may also transfer this information to third parties where required to do so by law, or where such third parties process the information on Google's behalf. Google will not associate your IP address with any other data held by Google. Google Analytics is not used on our AI Services (tutor.zerogravity.co.uk).
How can you control cookies and web beacons?
When you first access our marketing website, we will seek your consent to our use of non-essential cookies via a cookie banner. Such consent may be withdrawn at any time.
On our AI Services (tutor.zerogravity.co.uk and app.zerogravity.co.uk), non-essential cookies are limited to application performance monitoring and app installation functionality. No advertising or targeting cookies are used on these services.
Depending on your browser, you can set your browser to warn you before accepting cookies, or you can set it to refuse them. Please refer to the 'help' button (or similar) on your browser to learn more about how you can do this.
Disabling cookies may impact your experience on our Sites.
If you use different devices to access our Sites, you will need to ensure that each browser of each device is set to your cookie preference.
More information on how to manage cookies is available from: www.allaboutcookies.org/manage-cookies.
In addition, you may opt-out from certain cookies by visiting the following third-party websites and selecting which company cookies you would like to opt-out from: www.aboutads.info/choices and www.youronlinechoices.com. Please note that Zero Gravity has no affiliation with, and is not responsible for, these third-party websites.