Ownership
Customers retain ownership of the files and data they provide. Supplying a file for version tracking does not transfer ownership to Praxis Lab.
Houston / Data & privacy
Your files remain your files.
Houston uses working files to provide an agreed version-tracking service. Ownership stays with the customer, access is agreed and uncertainty remains visible.
A clear basis for working together.
Purpose
Files are used to provide the Houston service: configuring tracking, running version reviews and examining the agreed results.
Original evidence
Houston does not silently edit original files. The original versions remain the evidence behind a review.
Human access
Praxis will only inspect customer files when access has been agreed, such as during founder-supported setup or an agreed review.
Product learning
Any optional access for product learning must be explicit. Declining it does not prevent private use of Houston.
Deletion
Customers can request deletion of their files and related service data by contacting Praxis Lab.
Privacy notice · Last updated 31 July 2026
Who is responsible for your information.
Applied Praxis Limited, company number SC891275, trading as Praxis Lab, is the controller for personal information collected through the Houston enquiry form.
Registered office: 48 West George Street, Glasgow G2 1BP, United Kingdom.
Contact: gs@praxis-lab.co.uk.
What is collected, and why.
Information you provide
Name, work email, company, role, spreadsheet type, update frequency, what you need to identify, an optional message and the originating Houston page. It comes directly from you.
Purpose
Praxis uses this information to respond, assess whether Houston is suitable, arrange a requested next step and protect the enquiry service from abuse. It is not added to an unrelated marketing list.
Lawful basis
Praxis relies on legitimate interests to respond to expected business enquiries and operate a secure service. Where you ask Praxis to take steps towards a contract with you personally, those pre-contract steps may also provide the lawful basis.
Security information
The service creates a keyed, one-way hash from the submitting address for rate-limiting. The raw address is not stored in the enquiry database, and the hash expires after one hour.
Is it required?
Providing information is not a statutory or contractual requirement. The fields marked as required are needed if you want Praxis to understand and respond to the enquiry.
Automated decisions
Praxis does not use enquiry information for solely automated decisions or profiling that has legal or similarly significant effects.
Storage, recipients and retention.
Where it is stored
Enquiries are stored in a private database on Praxis Lab’s Hetzner-hosted server in Helsinki, Finland. Hetzner Online GmbH acts as the infrastructure provider. The database is not publicly accessible and the form does not accept spreadsheet uploads.
Who may receive it
Access is limited to authorised Praxis personnel and infrastructure providers acting on Praxis’s instructions. Information may also be disclosed where required by law or to professional advisers under duties of confidentiality. Praxis does not sell enquiry information.
International transfers
The enquiry database and its deployment backups remain within the European Economic Area. If a later service arrangement requires a transfer outside the UK or EEA, Praxis will use an applicable UK adequacy regulation or appropriate safeguards and provide further information where required.
How long it is kept
Enquiries are deleted automatically from the active database and every retained database backup once they reach 90 days. Deployment database backup files are also deleted after 90 days. One-hour rate-limit hashes expire separately and are not retained in deployment backups. A confirmed deletion request removes the matching enquiry from the active database and retained backups.
If an enquiry becomes a customer relationship, information needed for the contract, accounts or legal obligations may be retained under the terms applicable to that relationship.
Do not send confidential working files through the public form or ordinary email unless an appropriate transfer method has been agreed.
Your information rights.
Depending on the circumstances, you may ask for access to your personal information, correction, deletion, restriction of its use or portability. You can make a request by emailing gs@praxis-lab.co.uk. These rights are not always absolute, and Praxis will explain if an exemption applies.
Your right to object
You may object to processing based on legitimate interests. You have an absolute right to object if personal information is ever used for direct marketing.
If you are dissatisfied, please contact Praxis first so the concern can be addressed. You also have the right to complain to the UK Information Commissioner’s Office through its complaints service.
The launch service in plain terms.
Houston is offered initially as a founder-supported service tracking successive versions of one agreed recurring source at £100 per month, with no ongoing commitment.
During setup, Praxis and the customer agree the relevant worksheets, expected version frequency, intended users and fields that matter. A materially different structure or another recurring source is assessed separately before any change to scope or price.
Houston brings changes and uncertain matches forward for human review. It does not make operational decisions, replace the customer’s source systems or guarantee that every spreadsheet error will be found. Either party can decide not to continue if the version review is not useful.
Private use remains available.
Houston is not presented on the basis that customer data is used to train AI models. Any materially different use would require a clear, separate agreement.
Questions about your files?
Agree the handling before sharing the data.
Contact Praxis Lab to discuss a representative file and the appropriate way to review it.
Contact Praxis Lab