Terms of Service

By accessing or using Stackey, you confirm that you are at least 13 years of age and agree to be bound by these Terms. If you are under 18, you must have parental or guardian consent.

These Terms apply to all users of the service. Use of Stackey also implies acceptance of our Privacy Policy.

When you create an account, you agree to provide accurate and complete information.

• One account per person (except under the Business plan).
• You are responsible for maintaining the confidentiality of your password and for all activity under your account.
• Notify us immediately at Contact if you suspect unauthorized access to your account.
• Accounts may not be transferred, sold, or shared with others.

Stackey provides cloud-based file management including:

• File upload, storage, and management
• AI-powered automatic naming, categorization, and thumbnail generation
• Smart search by natural language and file content
• Import from Google Drive, Dropbox, and OneDrive (paid plans only)

Supported file types include PDF, images (JPG/PNG/HEIC), Office documents (Word/Excel/PPT), and text files. Video, audio, and archive files are not supported.

Plan limits and features are detailed on the pricing page.

You may not use Stackey to:

• Upload, store, or distribute illegal content (including copyright-infringing material, obscene content, or child sexual abuse material)
• Upload malware, viruses, or any other malicious files
• Attempt to gain unauthorized access to the service or other users' data
• Reverse engineer, decompile, or disassemble any part of the service
• Use automated tools to scrape, crawl, or overload the service
• Share, resell, or sublicense your account without authorization
• Build a competing product using our service or API
• Violate any applicable law or regulation

Your files: You retain all rights to the files you upload. By using Stackey, you grant us a limited, non-exclusive license to process your files solely to provide the service.

Stackey: All rights in the service, brand, design, and software are owned by 1carat International Co., Ltd. Your use of the service grants you a non-exclusive, non-transferable right to use it as intended.

Paid plans are billed in advance through Stripe.

• Monthly plans renew automatically each month; annual plans renew each year.
• All charges are non-refundable except where required by law.
• Free trials will not be charged until the trial period ends, after which the selected plan billing begins automatically.
• We will provide at least 30 days' notice of any price changes.
• Failure to pay may result in service suspension.

You may cancel your subscription at any time from your account settings.

• Access continues until the end of the current billing period after cancellation.
• Your data is retained for 30 days after account closure, then permanently deleted.
• We may suspend or terminate accounts that violate these Terms without notice.
• If we discontinue the service, we will provide at least 30 days' notice.

Stackey is provided "as is" without warranty of any kind. We are not liable for:

• Service interruptions, outages, or data loss
• The accuracy of AI-generated file names, categories, or summaries
• Content uploaded by users
• Loss or damage caused by unauthorized access to your account
• Events beyond our reasonable control (force majeure)

To the maximum extent permitted by law, our total liability to you shall not exceed the fees you paid in the three months preceding the claim.

We reserve the right to modify, add, or remove features at any time. We will make reasonable efforts to notify users of significant changes in advance. Continued use after changes constitutes acceptance.

We may update these Terms from time to time. Material changes will be communicated by email or in-app notice. Continued use of the service after the effective date of any update constitutes acceptance of the revised Terms.

These Terms are governed by the laws of Japan. Any disputes arising under these Terms shall be subject to the exclusive jurisdiction of the Tokyo District Court as the court of first instance.

Questions about these Terms? Please reach out:

1carat International Co., Ltd.
17-2 4F Nihonbashi Kabutocho, Chuo-ku, Tokyo 103-0026, Japan
Email: Contact