Terms of Use

Last Updated: April 3, 2026

Welcome to Tools for Divers

These Terms of Use (“Terms”) govern your use of all apps published by Tools for Divers, LLC, including Dalton, Slate, and Slate Link. By downloading, installing, or using any of our apps, you agree to these Terms.

Important: Our apps are diving tools, not substitutes for proper dive training, safety equipment, a functioning dive computer, or good diving judgment.

About Our Apps

Dalton — Technical Diving Gas Calculator

Dalton is a safety-critical gas calculation tool for technical divers. It performs MOD, MinOD, EAD, END, Best Mix, gas density, partial pressure, return number, bottom time, team gas matching, and multi-gas dive profile calculations entirely offline on your device.

Dalton is a paid app available on iOS and Android. A one-time purchase grants a perpetual license to use the app. Dalton performs all calculations locally on your device with no accounts and no collection of personal data. The only network activity is anonymous crash reporting via Sentry and purchase verification via RevenueCat (through the App Store on iOS or Google Play on Android).

Slate — Professional Dive Logbook

Slate is a dive logging app for iPhone. It records, reviews, and analyzes scuba dives with data from manual entry, dive computers, UDDF files, and Apple Watch. All dive data is stored locally on your device, with optional iCloud sync across your Apple devices.

Slate is free to download. Core logging, dive computer import, search, and export are free with no limits. Slate Premium unlocks advanced analytics, career trends, on-device analysis, and additional features via an annual subscription or lifetime purchase.

Slate Link — macOS Dive Computer Companion

Slate Link is a free macOS companion app for Slate. It downloads dive data from dive computers over Bluetooth and syncs it to your Slate logbook via iCloud.

User Responsibilities

Diving Safety First

Critical Safety Notice: Dalton is a reference calculator only. You are solely responsible for:

  • Safe Diving Practices: Following your training, certification limits, and diving safety protocols
  • Equipment Safety: Using properly maintained, appropriate diving equipment
  • Dive Planning: Creating safe dive plans using proper decompression tables, dive computers, or certified dive planning software
  • Emergency Preparedness: Having appropriate emergency procedures, insurance, and safety equipment
  • Skill Maintenance: Staying current with your certifications and diving skills

Data Accuracy and Responsibility

  • Verification: Always verify gas calculations against multiple independent sources before any dive
  • Logbook Accuracy: You are responsible for the accuracy of dive data you enter or import into Slate
  • Professional Use: If using our apps for professional diving, ensure compliance with all applicable regulations and standards

Appropriate Use

  • Use our apps only for legitimate diving purposes
  • Do not use the apps for any illegal activities or to circumvent diving safety regulations
  • Follow all applicable laws and regulations in your jurisdiction

Gas Calculation Safety Disclaimer

CRITICAL SAFETY NOTICE:

Our apps are diving tools, not safety equipment. They are NOT a substitute for:

  • Proper technical diving training and certification (TDI, IANTD, GUE, or equivalent)
  • A functioning dive computer with real-time monitoring
  • Pre-dive gas analysis using calibrated oxygen and helium analyzers
  • The judgment and experience required for technical diving
  • Redundant safety equipment and proper gas management procedures

You acknowledge and agree that:

  • Technical diving (including nitrox, trimix, and rebreather diving) carries extreme risks including serious injury or death
  • Gas calculations must always be verified against multiple independent sources before any dive
  • Calculations are based on established formulas but cannot account for individual physiological variation, equipment condition, or environmental factors
  • You will never rely solely on our apps for life-safety decisions
  • You assume complete responsibility for verifying all gas calculations before diving

Intellectual Property Rights

Your Content

  • Ownership: You retain complete ownership of all gas mixes, calculations, dive logs, and data you enter into our apps
  • Privacy: Your data remains on your device under your exclusive control (with optional iCloud sync in Slate)
  • No License Grant: You do not grant us any rights to use, analyze, or monetize your data

App Content and Technology

  • Our apps’ software, design, and functionality are protected by intellectual property laws
  • You receive a limited, non-exclusive license to use the apps for personal diving purposes
  • You may not reverse engineer, modify, or create derivative works based on our apps
  • All trademarks and copyrights remain the property of their respective owners

Disclaimers and Limitations

Diving Safety Disclaimer

IMPORTANT SAFETY NOTICE:

Our apps are diving tools. They are NOT:

  • A dive computer or real-time decompression monitor
  • A substitute for proper dive training or certification
  • A replacement for standard diving safety equipment
  • A source of diving medical or safety advice
  • An emergency assistance or rescue service

You acknowledge that:

  • Scuba diving is an inherently dangerous activity that can result in serious injury or death
  • Proper training, certification, equipment, and judgment are essential for safe diving
  • No app or technology can replace proper diving safety practices
  • You dive at your own risk and assume all responsibility for your safety

Technical Limitations

No Warranties:

  • Dalton is provided “as is” without warranties of any kind
  • We do not guarantee the app will be error-free or continuously available
  • Data accuracy depends on user input and device functionality

Data Responsibility:

  • You are responsible for verifying all calculation results
  • While we strive for accuracy, you should always cross-reference results against published tables
  • We are not liable for any errors in calculations

Limitation of Liability

Maximum Liability Cap

To the maximum extent permitted by law, our total liability to you for any claims related to our apps shall not exceed the amount you paid for the app or subscription.

Excluded Damages

We are not liable for:

  • Any diving accidents, injuries, or fatalities
  • Lost profits, data, or business opportunities
  • Indirect, incidental, or consequential damages
  • Damages resulting from your use or inability to use the app
  • Inaccuracies in gas calculations

Your Assumption of Risk

By using Dalton, you acknowledge that:

  • You understand the inherent risks of scuba diving
  • You will not rely solely on our apps for diving safety decisions
  • You assume all responsibility for your diving activities
  • You will maintain appropriate diving insurance and emergency procedures

Privacy and Data Protection

Privacy First

  • All gas calculations and dive data remain on your device (with optional iCloud sync in Slate on iOS)
  • Network activity is limited to anonymous crash reporting (Sentry) and purchase/subscription verification (RevenueCat via Apple or Google Play)
  • No personal data, dive data, or usage patterns are collected or transmitted to Tools for Divers
  • See our Privacy Policy for complete details

International Use and Compliance

Global Availability

Our apps may be used internationally, but you are responsible for:

  • Compliance with local diving regulations and laws
  • Understanding that diving practices vary by country and region
  • Obtaining appropriate diving insurance for your location

Export Controls

If applicable, you agree to comply with all export control laws and regulations.

Updates and Changes

App Updates

  • We may update our apps to add features, improve performance, or fix issues
  • Updates may require acceptance of revised terms
  • Continued use after updates indicates acceptance of changes
  • Critical safety updates will be communicated clearly

Terms Changes

  • We may modify these Terms with 30 days’ notice
  • Material changes will be highlighted in app notifications
  • Continued use after changes indicates acceptance
  • If you disagree with changes, discontinue use of the app

Termination

Your Rights

  • You may stop using our apps at any time
  • Delete the app to remove all locally stored data

Our Rights

We may terminate or suspend access to our apps if you:

  • Violate these Terms of Use
  • Use the app for illegal or harmful purposes
  • Attempt to reverse engineer or modify the app

Support and Contact Information

Technical Support

Email: contact@toolsfordivers.com Response Time: Best effort, typically within a few days

Email: contact@toolsfordivers.com Please include “Legal” or “Privacy” in your subject line.

Emergency Notice

Tools for Divers support is not an emergency service. For diving emergencies, contact:

  • Local emergency services (911, 112, etc.)
  • Divers Alert Network (DAN): +1-919-684-9111
  • Local hyperbaric chamber or emergency medical services

Governing Law and Dispute Resolution

Applicable Law

These Terms are governed by applicable law without regard to conflict of law principles.

Dispute Resolution

Before pursuing legal action, we encourage users to contact us directly to resolve any issues. We’re committed to working with our diving community to address concerns fairly and promptly.

Special Provisions for Professional Divers

Commercial and Technical Diving

If you use our apps for commercial, technical, or professional diving:

  • Ensure compliance with all applicable occupational safety standards
  • Understand that Dalton supplements but does not replace mandatory safety procedures
  • Consider additional liability insurance appropriate for professional diving activities

Acknowledgment and Agreement

By using our apps, you acknowledge that you have:

  • Read and understood these Terms of Use
  • Agreed to assume all risks associated with scuba diving
  • Confirmed you will not rely solely on our apps for diving safety decisions
  • Understood that our apps are diving tools, not safety equipment
  • Agreed to use the apps responsibly and in accordance with these Terms

Remember: Your safety underwater depends on your training, judgment, and proper equipment — not on any app or technology.

Quick Reference

What our apps are:

  • Dalton — A professional gas calculation reference tool for iOS and Android (one-time purchase)
  • Slate — A professional dive logbook for iPhone (free core, optional premium)
  • Slate Link — A free macOS companion for downloading dives to Slate
  • All data stored locally on your device

What our apps are NOT:

  • A dive computer or decompression planner
  • A substitute for proper dive training
  • Safety equipment or an emergency service

Questions? Email contact@toolsfordivers.com