Terms of Use & EULA
1. Parties and Scope
This End User License Agreement ("Agreement") is between you ("User") and Bunyan Software ("we", "us", "our"), based in British Columbia, Canada. This Agreement governs your use of LogScanner and LogMaster (the "Apps") regardless of where in the world you are located.
Where local consumer protection laws provide rights that cannot be waived by contract, those rights are not affected by this Agreement.
2. License Grant
Subject to your compliance with this Agreement and payment of applicable subscription fees, we grant you a limited, non-exclusive, non-transferable, revocable license to install and use the Apps on Apple devices you own or control, solely for your personal or internal business purposes. This license does not include any right to sublicense, resell, redistribute, or commercially exploit the Apps.
3. Subscription Terms
Plans and Pricing
LogScanner is free. Log Master requires a subscription. Current Log Master pricing is displayed in the Apple App Store at the time of purchase.
Billing and Renewal
- Subscriptions automatically renew unless cancelled at least 24 hours before the renewal date
- Payment is charged to your Apple ID upon confirmation and at each renewal
- You will receive notice of any price changes before they take effect
Cancellation and Refunds
- Cancel any time through your Apple ID account settings
- You retain access until the end of the current billing period
- Refunds are handled by Apple per their refund policy and applicable consumer law
- Statutory withdrawal rights (e.g. 14-day EU cooling-off period) are not affected
4. Apple App Store Terms
The Apps are distributed through the Apple App Store and are also subject to Apple's standard EULA. Bunyan Software, not Apple, is solely responsible for the Apps and their content.
5. Permitted and Prohibited Uses
Permitted Uses
- Scanning logs for measurement, yield estimation, and planning
- Generating log scaling estimates for your own operations
- Exporting data (PDF, CSV, 3D files) for your own records or business use
- Using the Apps across your personal devices on the same Apple ID
- Opening scan files you created in LogScanner with Log Master, and sharing them with other LogScanner or Log Master users
Prohibited Uses
- Reverse engineering, decompiling, or disassembling the Apps
- Modifying or creating derivative works based on the Apps
- Removing proprietary notices from within the Apps
- Using the Apps for any unlawful purpose
- Reselling or sublicensing the Apps or providing commercial access to third parties
- Using automated tools to extract data from the Apps
- Decrypting, decoding, converting, or otherwise accessing the contents of a scan file produced by the Apps by any means other than the Apps, or making, distributing, or using any software or service that reads, writes, or converts the Apps' scan file format. The scan file container, its encoding, and the processed geometry and measurements it holds are part of the Apps under section 6 and are licensed only for use with the Apps
- Using the Apps, or data produced by the Apps in any form other than the exports the Apps provide (PDF, CSV, 3D model files), as an input to, or a component of, any third-party sawmill optimization, log scaling, or measurement product or service, whether commercial or not
6. Intellectual Property
The Apps and all related software, algorithms, interfaces, and content are the exclusive property of Bunyan Software, protected by Canadian copyright law and applicable international treaties. Nothing in this Agreement transfers any ownership rights to you.
The scan file format the Apps use to store and share scans, including its container, encryption, encoding, and the processed scan data it holds, is proprietary to Bunyan Software and is part of the Apps. No licence to that format is granted other than the right to open your own scan files in the Apps.
7. User Data
All scan data, measurements, and exported files you create are your data, stored locally on your device. Bunyan Software never accesses this data. You retain full ownership and responsibility. See our Privacy Policy for full details.
Your measurements and the exports the Apps produce (PDF, CSV, 3D model files) are yours to use as you see fit, including with other software. The scan file in which the Apps store and share a scan is not an export; it is part of the Apps, and section 5 applies to it.
8. Measurement Accuracy & Limitations
What the Apps Measure
LogScanner uses your iPhone's or iPad's LiDAR sensor to capture log geometry and calculate:
- Diameter — small end, large end, and mid-log cross-section
- Length — full log length from a single scan
- Taper — calculated from end-to-end diameter difference
- Board Feet Yield — Doyle, Scribner, or International log scaling rules
Factors That Affect Accuracy
- Hardware sensor tolerances (typically ±1–2% under optimal conditions — real-world accuracy may differ)
- Lighting conditions — low light and harsh direct sunlight both reduce accuracy
- Log surface conditions — bark, moss, moisture, ice, or debris
- Scanning technique — distance, speed, angle, and completeness of coverage
- Log geometry — heavily fluted or forked logs scan less precisely
- Log Defects — surface defects are not treated differently than regular geometry
- Dirty or black surfaces — aritifical obsturctions or black patches create issues with the vision feedback systems
Log Yield Estimates
Board feet figures are approximations and do not account for sawing variation, blade kerf, drying shrinkage, or mill-specific factors. They should not be used as the sole basis for commercial timber transactions.
Well Suited For
- Rapid field assessment and pre-scaling screening
- Estimating yield before detailed scaling
- Comparing relative log sizes and quality in a pile
- Personal sawmill planning and yield estimation
- Record-keeping and inventory tracking
Requires Independent Verification
- Commercial timber or lumber purchase or sale contracts
- Insurance valuations or claims
- Legal or regulatory compliance determinations
- Structural or safety-critical applications
- Any purpose where certified measurement is legally required
9. Disclaimer of Warranties
10. Limitation of Liability
11. Regional Consumer Rights
12. Governing Law
This Agreement is governed by the laws of British Columbia, Canada. EU and UK consumers may also rely on mandatory consumer protection laws of their country and bring proceedings in local courts. EU dispute resolution: ec.europa.eu/consumers/odr/.
13. General
- This Agreement is the entire agreement between you and Bunyan Software regarding the Apps
- If any provision is unenforceable, remaining provisions stay in effect
- We may update this Agreement with notice; continued use constitutes acceptance
- You may not assign this Agreement without our prior written consent
- The English version governs where a translation is provided
14. Contact
Questions? Visit our Support page or contact us through the App Store listing.
© 2026 Bunyan Software · Privacy Policy · Terms of Use · Support
Terms of Use & EULA
1. Parties and Scope
This End User License Agreement ("Agreement") is between you ("User") and Bunyan Software ("we", "us", "our"), based in British Columbia, Canada. This Agreement governs your use of LogScanner and LogMaster (the "Apps") regardless of where in the world you are located.
Where local consumer protection laws provide rights that cannot be waived by contract, those rights are not affected by this Agreement.
2. License Grant
Subject to your compliance with this Agreement and payment of applicable subscription fees, we grant you a limited, non-exclusive, non-transferable, revocable license to install and use the Apps on Apple devices you own or control, solely for your personal or internal business purposes. This license does not include any right to sublicense, resell, redistribute, or commercially exploit the Apps.
3. Subscription Terms
Plans and Pricing
LogScanner is free. Log Master requires a subscription. Current Log Master pricing is displayed in the Apple App Store at the time of purchase.
Billing and Renewal
- Subscriptions automatically renew unless cancelled at least 24 hours before the renewal date
- Payment is charged to your Apple ID upon confirmation and at each renewal
- You will receive notice of any price changes before they take effect
Cancellation and Refunds
- Cancel any time through your Apple ID account settings
- You retain access until the end of the current billing period
- Refunds are handled by Apple per their refund policy and applicable consumer law
- Statutory withdrawal rights (e.g. 14-day EU cooling-off period) are not affected
4. Apple App Store Terms
The Apps are distributed through the Apple App Store and are also subject to Apple's standard EULA. Bunyan Software, not Apple, is solely responsible for the Apps and their content.
5. Permitted and Prohibited Uses
Permitted Uses
- Scanning logs for measurement, yield estimation, and planning
- Generating log scaling estimates for your own operations
- Exporting data (PDF, CSV, 3D files) for your own records or business use
- Using the Apps across your personal devices on the same Apple ID
- Opening scan files you created in LogScanner with Log Master, and sharing them with other LogScanner or Log Master users
Prohibited Uses
- Reverse engineering, decompiling, or disassembling the Apps
- Modifying or creating derivative works based on the Apps
- Removing proprietary notices from within the Apps
- Using the Apps for any unlawful purpose
- Reselling or sublicensing the Apps or providing commercial access to third parties
- Using automated tools to extract data from the Apps
- Decrypting, decoding, converting, or otherwise accessing the contents of a scan file produced by the Apps by any means other than the Apps, or making, distributing, or using any software or service that reads, writes, or converts the Apps' scan file format. The scan file container, its encoding, and the processed geometry and measurements it holds are part of the Apps under section 6 and are licensed only for use with the Apps
- Using the Apps, or data produced by the Apps in any form other than the exports the Apps provide (PDF, CSV, 3D model files), as an input to, or a component of, any third-party sawmill optimization, log scaling, or measurement product or service, whether commercial or not
6. Intellectual Property
The Apps and all related software, algorithms, interfaces, and content are the exclusive property of Bunyan Software, protected by Canadian copyright law and applicable international treaties. Nothing in this Agreement transfers any ownership rights to you.
The scan file format the Apps use to store and share scans, including its container, encryption, encoding, and the processed scan data it holds, is proprietary to Bunyan Software and is part of the Apps. No licence to that format is granted other than the right to open your own scan files in the Apps.
7. User Data
All scan data, measurements, and exported files you create are your data, stored locally on your device. Bunyan Software never accesses this data. You retain full ownership and responsibility. See our Privacy Policy for full details.
Your measurements and the exports the Apps produce (PDF, CSV, 3D model files) are yours to use as you see fit, including with other software. The scan file in which the Apps store and share a scan is not an export; it is part of the Apps, and section 5 applies to it.
8. Measurement Accuracy & Limitations
What the Apps Measure
LogScanner uses your iPhone's or iPad's LiDAR sensor to capture log geometry and calculate:
- Diameter — small end, large end, and mid-log cross-section
- Length — full log length from a single scan
- Taper — calculated from end-to-end diameter difference
- Board Feet Yield — Doyle, Scribner, or International log scaling rules
Factors That Affect Accuracy
- Hardware sensor tolerances (typically ±1–2% under optimal conditions — real-world accuracy may differ)
- Lighting conditions — low light and harsh direct sunlight both reduce accuracy
- Log surface conditions — bark, moss, moisture, ice, or debris
- Scanning technique — distance, speed, angle, and completeness of coverage
- Log geometry — heavily fluted or forked logs scan less precisely
- Log Defects — surface defects are not treated differently than regular geometry
- Dirty or black surfaces — aritifical obsturctions or black patches create issues with the vision feedback systems
Log Yield Estimates
Board feet figures are approximations and do not account for sawing variation, blade kerf, drying shrinkage, or mill-specific factors. They should not be used as the sole basis for commercial timber transactions.
Well Suited For
- Rapid field assessment and pre-scaling screening
- Estimating yield before detailed scaling
- Comparing relative log sizes and quality in a pile
- Personal sawmill planning and yield estimation
- Record-keeping and inventory tracking
Requires Independent Verification
- Commercial timber or lumber purchase or sale contracts
- Insurance valuations or claims
- Legal or regulatory compliance determinations
- Structural or safety-critical applications
- Any purpose where certified measurement is legally required
9. Disclaimer of Warranties
10. Limitation of Liability
11. Regional Consumer Rights
12. Governing Law
This Agreement is governed by the laws of British Columbia, Canada. EU and UK consumers may also rely on mandatory consumer protection laws of their country and bring proceedings in local courts. EU dispute resolution: ec.europa.eu/consumers/odr/.
13. General
- This Agreement is the entire agreement between you and Bunyan Software regarding the Apps
- If any provision is unenforceable, remaining provisions stay in effect
- We may update this Agreement with notice; continued use constitutes acceptance
- You may not assign this Agreement without our prior written consent
- The English version governs where a translation is provided
14. Contact
Questions? Visit our Support page or contact us through the App Store listing.
© 2026 Bunyan Software · Privacy Policy · Terms of Use · Support