These Terms of Service ("Terms") are a binding agreement between you and StackForge Studios ("we", "us", "our"). By creating an account or using any StackForge Studios product, you agree to these Terms.
Plain-English summary: be a good user, subscriptions auto-renew until you cancel, free trials convert unless cancelled, our products are not medical advice, and disputes go through informal resolution or arbitration before court.
1. Our products
StackForge Studios builds mobile games and apps for iOS and Android. Our current products include Nineward Sudoku, PlateStack, Tenward, Upward, and Twoward, with more to come. The "Service" means any StackForge Studios product, app, website, or feature you access. We add, change, and remove features over time. New features become part of the Service and are governed by these Terms. Product-specific details (pricing, subscriptions, feature sets) are published on each product's page.
2. Eligibility
You must be at least 13 to use our products. If you're under 18, a parent or guardian must agree to these Terms on your behalf. Our products are not directed at children under 13 and we do not knowingly collect their information.
3. Accounts
- You're responsible for keeping your credentials secure.
- You're responsible for all activity under your account.
- You can sign in with Sign in with Apple or Google. If you do, your use of those providers is also governed by their terms.
- If you suspect unauthorized access, notify us immediately at hello@stackforgestudios.com.
- You can request an export of your data at any time by emailing hello@stackforgestudios.com. We will provide a machine-readable export within a reasonable period.
4. Subscriptions, free trials, and payments
Some products offer free and paid tiers. Current pricing is listed on each product's page. Prices are in USD; localized pricing in the App Store and Google Play may differ slightly due to regional tax and platform conventions.
4.1 Mobile subscriptions (App Store / Google Play)
- Subscriptions purchased through the App Store or Google Play are billed and managed by Apple or Google.
- Subscriptions auto-renew at the end of each billing period at the then-current price unless you cancel at least 24 hours before the renewal date.
- Cancel anytime from your platform's Subscriptions screen. Access continues until the end of the paid period — no partial refunds.
- Refunds for App Store or Play Store purchases are handled by Apple or Google per their refund policies.
4.2 Free trials
- Where offered, free trials apply to eligible users on first sign-up for that product.
- Apple and Google generally limit each Apple ID or Google account to one free trial per subscription product.
- Unless you cancel at least 24 hours before the end of the trial, the subscription will automatically convert to a paid subscription at the then-current price, charged by Apple or Google.
4.3 Web subscriptions
- Subscriptions made on our websites are processed by Stripe.
- Web subscriptions auto-renew monthly or annually depending on the plan selected.
- You can cancel a web subscription anytime from your account settings or by contacting hello@stackforgestudios.com. Access continues through the current paid period.
- Refund requests for web purchases should be directed to hello@stackforgestudios.com. Refunds are issued at our discretion within 30 days of purchase for users who have not meaningfully used premium features.
4.4 Consumable in-app purchases
- Some products offer optional consumable purchases (such as Streak Shields in PlateStack). Consumables are non-refundable once used.
- Consumables have no cash value, no real-world value, are not transferable between accounts, and cannot be exchanged for money, refunds, or any other form of credit outside the Service.
- Consumables may expire, be modified, or be retired at any time. On account closure, unused consumables are forfeited and have no residual value.
5. Referral programs
Some products offer referral programs. Where available:
- Credits are issued only after a new account is created using your link and meets our eligibility checks. Existing users, reactivated accounts, and accounts that share device, payment, or identity signals with the referrer do not qualify.
- Self-referrals, fake accounts, fraudulent or automated sign-ups, paid promotion, and any other abuse are prohibited. We may reverse, void, or withhold credits for any account involved in suspected abuse.
- Referral credits have no cash value, are not transferable, cannot be sold or traded, and may expire if unused.
- We may change, suspend, or end any referral program, or change the credit amount, at any time.
6. Acceptable use
You agree not to:
- Reverse engineer, decompile, or extract source code from any of our apps.
- Scrape, mass-harvest, or redistribute any data accessed through the Service.
- Harass, threaten, harm, or impersonate others through any Service feature.
- Use any social or community feature to share illegal, infringing, sexually explicit, hateful, or harassing content.
- Upload content you do not have the rights to upload.
- Interfere with the Service's operation, attempt to bypass usage limits or quota controls, or probe, scan, or test the security of the Service without prior written permission.
- Use automated means to create accounts, generate activity, or manipulate streaks, scores, or leaderboards.
- Use the Service to develop a competing product or to train machine-learning models on Service content.
7. User-generated content
By submitting content through the Service — including logs, progress photos, voice recordings, chat messages, profile information, and feedback — you grant us a worldwide, non-exclusive, royalty-free license to host, store, process, transmit, display, and create derivative works of that content solely to operate, secure, and improve the Service for you and the people you choose to share it with. You retain ownership of your content. You warrant that you have all rights necessary to submit the content and to grant the license in this section.
To report abuse or content that violates these Terms, use the in-app report function or email hello@stackforgestudios.com. For copyright complaints under the DMCA, send a written notice including all elements required by 17 U.S.C. § 512(c)(3) to the same address.
8. AI features and disclaimers
- AI-generated content (food estimates, nutrition values, coach responses, meal plans, voice transcription) is produced by third-party models, including those operated by OpenAI and Anthropic.
- AI output may be inaccurate, incomplete, or out of date. Always review AI output before acting on it.
- AI features are informational only — not medical, dietary, training, or professional advice.
- We are not responsible for decisions you make based on AI-generated content.
- Under our agreements with our AI providers, your content is not used to train their public models.
9. Health disclaimer
Our products are not medical devices. Nothing in any of our apps constitutes medical, nutritional, or fitness advice from a licensed professional. Consult a qualified provider before starting or changing any fitness or nutrition program. Do not rely on our products for emergency or diagnostic purposes.
10. Apple Health / HealthKit and Android Health Connect
On iOS, PlateStack may request permission to read and write selected metrics from Apple Health. On Android, PlateStack may request permission to read and write selected metrics from Health Connect. These integrations are entirely optional and can be revoked at any time in iOS or Android settings.
- We use Apple Health / HealthKit and Android Health Connect data only to sync your activity, nutrition, recovery context, and body metrics within PlateStack.
- We do not use HealthKit or Health Connect data for advertising, marketing, data mining, or any similar purpose, and we do not share or sell that data to third parties.
11. Notifications and communications
- With your permission, we send push notifications for reminders, milestones, and other in-app events. You can disable notifications at any time in your device settings or in-app preferences.
- We send transactional emails to your registered address for account, billing, security, and legal updates. These cannot be opted out of while you have an active account.
- We may send product-update and marketing emails. You can unsubscribe from marketing email at any time via the link in any marketing message.
12. Downloadable assets
Wallpapers and other downloadable assets we make available through our websites are licensed to you on a personal, non-commercial basis. You may download and use them on your own devices. You may not resell, redistribute, mass-mirror, sublicense, claim authorship of, or use them for any commercial purpose. We may add, change, or remove assets at any time.
13. Intellectual property
Our products — including their design, features, code, logos, marketing copy, and content we provide — are owned by StackForge Studios and protected by US and international copyright and trademark law. You receive a limited, non-exclusive, non-transferable license to use our apps for personal, non-commercial purposes. No rights are granted by implication, estoppel, or otherwise except as expressly set out in these Terms.
14. Indemnification
You agree to defend, indemnify, and hold harmless StackForge Studios and its officers, employees, and agents from any claims, damages, liabilities, and expenses (including reasonable attorneys' fees) arising from: (a) your use of the Service; (b) your violation of these Terms; (c) your violation of any third-party rights; or (d) any content you submit through the Service.
15. Disclaimers and limitation of liability
The Service is provided "as is" and "as available" without warranties of any kind, express or implied, including warranties of merchantability, fitness for a particular purpose, or non-infringement.
To the maximum extent permitted by applicable law, StackForge Studios is not liable for any indirect, incidental, special, consequential, or punitive damages — including loss of data, revenue, or profits — arising from your use of or inability to use the Service.
Our total aggregate liability for any claim arising from the Service is limited to the greater of: (a) the amount you paid us in the twelve months preceding the claim, or (b) $50 USD.
16. Force majeure
We are not liable for delays or failures caused by events outside our reasonable control, including natural disasters, internet outages, third-party service failures, acts of government, or other force majeure events.
17. Termination
- You may delete your account anytime via the in-app option or by emailing hello@stackforgestudios.com. Before deleting, you may request a data export.
- We may suspend or terminate your account if you violate these Terms, with or without notice depending on severity.
- On termination, your data is deleted per the Privacy Policy (within 30 days), and unused referral credits and consumables are forfeited with no refund or cash value.
18. Dispute resolution
18.1 Informal resolution first
Before filing any claim, contact us at hello@stackforgestudios.com and describe your issue. We'll try to resolve it within 30 days.
18.2 Binding arbitration
If we can't resolve the issue informally, you and StackForge Studios agree to resolve any dispute through binding individual arbitration administered by the American Arbitration Association (AAA) under its Consumer Arbitration Rules, not in court. Arbitration is less formal than court but just as binding.
Exception: either party may bring claims in small claims court if the claim qualifies. Either party may also seek emergency injunctive relief in court to prevent irreparable harm while arbitration proceeds.
18.3 No class actions
You and StackForge Studios each waive the right to participate in class action lawsuits or class-wide arbitration. All claims must be brought individually.
18.4 Governing law
These Terms are governed by the laws of the State of Delaware, without regard to conflict-of-law principles. Any court proceedings not subject to arbitration will be brought in the state or federal courts in Delaware, unless otherwise required by applicable law.
19. Changes to the Service or Terms
We may change the Service or these Terms. Material changes will be communicated in-app or by email to your registered address at least 14 days before they take effect. Continued use after changes take effect means you accept them. If you don't agree, close your account before the effective date.
20. Contact
Questions? Email hello@stackforgestudios.com.
StackForge Studios
United States