Fair Use& Copyright.Fair Use | & Copyright.
Legal disclaimers, Fair Use claims, copyright information, and DMCA takedown procedures for ER QuickCalc.
ER QuickCalc is an unofficial, fan-made calculator tool created by Genshin Impact players for the community.
This tool is NOT affiliated with, endorsed by, or sponsored by HoYoverse Co., Ltd., miHoYo, or COGNOSPHERE PTE. LTD.
Genshin Impact® and all related characters, names, images, weapons, artifacts, and game mechanics are trademarks and copyrights of HoYoverse Co., Ltd. All rights reserved.
1. Official Links
ER QuickCalc is a free community tool that complements the official Genshin Impact experience. We strongly encourage you to support the developers who created this amazing game:
2. Fair Use Doctrine (17 U.S.C. § 107)
ER QuickCalc uses Genshin Impact game data and images under the Fair Use doctrine of United States copyright law (17 U.S.C. § 107) for the following purposes:
2.1 Educational & Transformative Purpose
This tool provides educational analysis and calculations that are:
- Not available in the official game — We calculate Energy Recharge requirements using complex formulas
- Transformative — We add substantial new value through computational analysis
- Educational — Players learn about game mechanics, team building, and stat optimization
- Commentary & Criticism — We provide analytical commentary on character viability and team synergies
2.2 Nature of Copyrighted Work
We use:
- Factual game data — Stats, mechanics, formulas (not copyrightable)
- Character/weapon images — Used solely for identification purposes (minimal creative use)
- Character names — Used nominatively to identify game entities
2.3 Amount and Substantiality Used
We use only the minimum necessary for identification:
- Character portraits (not full artwork)
- Weapon icons (small format)
- Names and stats (factual data)
- We do NOT reproduce: cutscenes, voice acting, story content, 3D models, or music
2.4 Effect on Market Value
ER QuickCalc does NOT compete with Genshin Impact:
- Complementary tool — Enhances player experience, does not replace the game
- No substitute for gameplay — Players still need to play Genshin Impact
- Promotes engagement — Helps players optimize builds, encouraging continued play
- Community positive — Part of the healthy fan ecosystem
- We do NOT sell: game assets, characters, accounts, or anything HoYoverse sells
Conclusion: Fair Use Analysis
Under the four-factor testof Fair Use (17 U.S.C. § 107), ER QuickCalc's use of Genshin Impact assets is:
- Factor 1 (Purpose): Transformative, educational, non-commercial core
- Factor 2 (Nature): Primarily factual data with minimal creative use
- Factor 3 (Amount): Minimal use necessary for identification
- Factor 4 (Market Effect): No negative impact; complementary tool
Result: We believe our use qualifies as Fair Use under copyright law.
3. Beta & Unreleased Content Policy
ER QuickCalc may occasionally feature data regarding characters, weapons, or artifacts that are currently in Beta testing or have not yet been officially released to the live servers.
3.1 Speculative Nature of Data
All calculations, stats, and recommendations for unreleased content are highly speculative and subject to change by HoYoverse at any time prior to (or even after) official release.
- No Guarantees: We cannot guarantee that unreleased characters will function as calculated.
- Financial Risk: We are not responsible for any in-game resources (Primogems, materials) spent based on beta calculations.
- Adjustment Period: We aim to update our database within 24-48 hours of official changes, but discrepancies may occur.
3.2 Spoilers & Release Timing
By using this calculator, you acknowledge the potential for spoilers regarding:
- Upcoming character kits and abilities
- Future game mechanics or artifact sets
- Banner release orders (if referenced)
We endeavor to mark such content clearly, but cannot guarantee a completely spoiler-free experience for users who wish to remain purely on the "Live" patch cycle.
4. Monetization & Revenue Model
4.1 How We Fund This Tool
ER QuickCalc is free to use and funded through:
- Voluntary donations — Ko-fi (optional, no exclusive features)
- NO paywalls — All calculations are completely free
- NO data selling — We do not sell user data
- NO premium features — Everyone gets the same tool
4.2 Revenue Transparency
All revenue goes towards:
- Server hosting costs (Supabase, domain, CDN)
- Development time (open-source maintenance)
- Research & data validation (KQM-sourced data)
- Design & UX improvements
We do NOT profit from HoYoverse's intellectual property. Revenue covers operational costs only.
5. Intellectual Property Ownership
5.1 What We Own
- ER QuickCalc source code — Original software developed by us
- Calculation engine — Proprietary algorithms and formulas
- User interface design — Original UI/UX work
- Documentation & guides — Written content (methodology, FAQs)
5.2 What HoYoverse Owns
- Genshin Impact® — Game title, trademark, logo
- Character names & designs — Raiden Shogun, Hu Tao, Zhongli, etc.
- Artwork & images — Character portraits, splash art, weapon icons
- Game mechanics — Energy Recharge system, elemental reactions
- Story & lore — Teyvat, character backstories, quests
5.3 Third-Party Credits
We rely on community research from:
- KeqingMains (KQM) — Gold standard theorycrafting data
- Genshin Optimizer community — Calculation methodologies
- Open-source contributors — Calculation verification
6. DMCA Takedown Procedure
If you are HoYoverse Co., Ltd. or an authorized representative and believe that content on ER QuickCalc infringes your copyright, please contact us immediately.
6.1 Contact Information
DMCA Agent: ER QuickCalc Legal Team
Email: support@erquickcalc.com
Response Time: We will respond within 48 hours
6.2 Required Information for DMCA Notice
To file a valid DMCA takedown request, please include:
- Identification of copyrighted work — Specify which Genshin Impact assets are at issue
- Location of infringing material — Provide URLs or specific pages on erquickcalc.com
- Contact information — Email, phone, and physical address
- Good faith statement— "I have a good faith belief that the use is not authorized by the copyright owner"
- Accuracy statement— "The information in this notice is accurate, and I am authorized to act on behalf of the copyright owner"
- Physical or electronic signature — From copyright owner or authorized agent
6.3 Our Commitment
We take copyright seriously and will:
- Respond promptly — Within 48 hours of receiving a valid DMCA notice
- Remove content if required — We will comply with valid takedown requests
- Maintain open communication — We prefer dialogue over legal action
- Respect intellectual property— We never intended to harm HoYoverse's rights
7. Updates to This Page
We may update this legal information as laws, regulations, or our practices change. Major updates will be announced on the homepage.
Last Updated: May 29, 2026
8. Questions or Concerns?
If you have questions about our legal practices or copyright usage:
- Legal inquiries: legal@erquickcalc.com
- DMCA notices: legal@erquickcalc.com
- General support: Discord Community
ER QuickCalc is built with love by Genshin Impact fans, for the community. We deeply respect HoYoverse's creative work and have no intention of infringing on their rights. If you have concerns, please reach out—we're happy to work together.