Please read these Terms of Use carefully before downloading or using the DynoLog application. By downloading, installing, or using DynoLog, you agree to be bound by these Terms. If you do not agree to these Terms, do not download or use the App. These Terms constitute a legally binding agreement between you and DtimesTwo Technologies LLC ("we," "our," or "us").
By downloading, installing, accessing, or using the DynoLog application ("App") or the website at dynolog.com ("Site"), or the public build pages at dynolog.vercel.app, you agree to be bound by these Terms of Use and our Privacy Policy. These Terms apply to all users of the App, Site, and public build pages.
If you are using the App on behalf of an organization, you represent and warrant that you have the authority to bind that organization to these Terms.
Subject to your compliance with these Terms, we grant you a limited, non-exclusive, non-transferable, revocable license to download and use the App on your personal mobile device(s) solely for your personal, non-commercial purposes.
You may not:
DynoLog can be used without an account — your data stays local to your device. To access community features (public build profiles, the community feed, likes, comments, and follows), you must create a DynoLog account by signing in with Apple or Google.
You are responsible for all activity that occurs under your account. You agree to provide accurate information when creating your account and to keep your authentication credentials secure. You may not share your account with others or create accounts on behalf of third parties.
New accounts are subject to a brief introductory period during which certain community actions (such as commenting) may be rate-limited. This is to maintain community quality and is not a punishment — limits lift automatically as your account ages.
We reserve the right to suspend or terminate accounts that violate these Terms, engage in abusive behavior, or attempt to circumvent moderation or security systems.
DynoLog offers a one-time Pro unlock ("DynoLog Pro") at a price of $6.99 USD, subject to change. All purchases are processed through Apple's App Store or the Google Play Store, as applicable, and are subject to the payment terms of those platforms.
All sales are final. We do not offer refunds for in-app purchases except as required by applicable law or as provided by Apple's or Google's respective refund policies. Refund requests must be directed to Apple or Google, as we do not have the ability to issue refunds directly.
DynoLog Pro unlocks additional features as described in the App at the time of purchase. Features included in the Pro tier are subject to change over time. Your one-time purchase entitles you to the Pro features available in the App and any subsequent updates during the App's active development.
Your Pro entitlement is tied to your Apple ID or Google account and can be restored on any device using the "Restore Purchases" option in the App.
Your private build data. All vehicle information, modification records, receipt photos, performance runs, and notes you create in the App are yours. DynoLog stores this data locally on your device and, if you have an account with cloud sync enabled, on Supabase infrastructure. You retain full ownership of all content you create.
Public build content. When you publish a build, you grant DtimesTwo Technologies LLC a non-exclusive, worldwide, royalty-free license to display, distribute, and moderate your public build content (including vehicle nickname, mod list, performance data, photos, and comments) within the App and on dynolog.vercel.app. This license is limited to operating the community features and terminates when you unpublish the build. We do not claim ownership of your content.
Community conduct. When participating in the DynoLog community, you agree not to post content that:
Zero tolerance for objectionable content and abusive users. There is no tolerance for objectionable, abusive, or otherwise violating content or behavior on DynoLog. When content is reported or otherwise identified as violating these Terms, we will remove the content and may suspend or permanently ban the user responsible. We endeavor to review reports and remove objectionable content within 24 hours, and to eject users who repeatedly or egregiously violate these Terms.
Moderation. All comments are reviewed by our AI-powered moderation system before becoming publicly visible. Published builds are also reviewed before going live. We reserve the right to remove any content that violates these Terms or our community standards, without notice. Repeated violations may result in account suspension or termination.
Reporting and blocking. You can report content or users, block users, and mute users directly within the App. We review reports promptly — generally within 24 hours — and act on them by removing violating content and, where warranted, suspending or banning the user responsible. Use of the report system to harass other users (report-griefing) is itself a violation of these Terms.
Your responsibility for backups. We are not liable for any loss of data resulting from device failure, App deletion, account termination, or any other cause. For locally stored data, uninstalling the App or replacing your device will result in permanent loss unless you have exported your data. Cloud-synced data is retained per our Privacy Policy.
DynoLog supports importing performance run data from the HowFast application via three mechanisms: a direct device deep link, a .dynolog file export, and cloud background sync through a shared Supabase connection. By using any of these features, you authorize DynoLog to receive and store the run data transmitted by HowFast on your device and, if applicable, in your cloud account.
The HowFast integration is provided as a convenience feature. We make no warranty that the integration will remain available in future versions of either application, that it will function with all versions of HowFast, or that imported data will be complete or accurate. HowFast is a separate application, also published by DtimesTwo Technologies LLC, and governed by its own terms of use and privacy policy.
THE APP AND SITE ARE PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED. TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, WE DISCLAIM ALL WARRANTIES, INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
We do not warrant that the App will be uninterrupted, error-free, or free of viruses or other harmful components. We do not warrant that any data stored in the App will be preserved, that the App will be compatible with your device or operating system, or that any features will remain available in future versions.
Build cost calculations, performance data, community content, and any other figures or information generated or displayed by the App are provided for informational and organizational purposes only. We make no representations regarding their accuracy, completeness, or fitness for any particular purpose.
TO THE FULLEST EXTENT PERMITTED BY LAW, DTIMESTWO TECHNOLOGIES LLC AND ITS OFFICERS, DIRECTORS, EMPLOYEES, AND AGENTS SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, INCLUDING LOSS OF DATA, LOSS OF PROFITS, OR LOSS OF GOODWILL, ARISING OUT OF OR IN CONNECTION WITH YOUR USE OF THE APP OR SITE, EVEN IF WE HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
IN NO EVENT SHALL OUR TOTAL LIABILITY TO YOU FOR ALL CLAIMS ARISING OUT OF OR RELATING TO THESE TERMS OR YOUR USE OF THE APP EXCEED THE AMOUNT YOU PAID FOR THE APP IN THE TWELVE MONTHS PRECEDING THE CLAIM, OR TEN DOLLARS ($10.00), WHICHEVER IS GREATER.
Some jurisdictions do not allow the exclusion or limitation of certain damages, so some of the above limitations may not apply to you.
The App, including its name, logo, design, source code, algorithms, user interface, and all content within it (excluding user-submitted content), is the exclusive property of DtimesTwo Technologies LLC and is protected by applicable copyright, trademark, and intellectual property laws.
The DynoLog name and logo are trademarks of DtimesTwo Technologies LLC. Nothing in these Terms grants you any right to use our trademarks, trade names, logos, or other brand features without our prior written consent.
Any feedback, suggestions, bug reports, or ideas you provide to us regarding the App may be used by us for any purpose without obligation or compensation to you.
We may suspend or terminate your account or access to the App at any time, with or without cause or notice, to the extent permitted by applicable law. Grounds for termination include but are not limited to violation of these Terms, abusive behavior toward other users, or misuse of community or moderation features.
Upon termination, your license to use the App ceases immediately. Provisions of these Terms that by their nature should survive termination will survive, including Sections 7, 8, 9, and 11.
You may terminate your use of the App at any time by deleting it from your device and, if applicable, requesting account deletion by contacting us. Deletion of the App will permanently remove locally stored data.
These Terms shall be governed by and construed in accordance with the laws of the Commonwealth of Pennsylvania, without regard to its conflict of law provisions. Any disputes arising under these Terms shall be resolved exclusively in the state or federal courts located in Pennsylvania, and you consent to the personal jurisdiction of such courts.
We reserve the right to modify these Terms at any time. When we do, we will update the "Last updated" date at the top of this page. Material changes will be communicated through the App or Site where reasonably practicable. Your continued use of the App after changes are posted constitutes your acceptance of the revised Terms.
Questions about these Terms may be directed to: