End User License Agreement

Effective June 24, 2026 · Caliper App LLC

The most important thing to know: Caliper is a tool to assist your work. All measurements, dimensions, scales, areas, and other outputs are approximate — you are solely responsible for independently verifying them against authoritative source documents before relying on them, and Caliper must never be your sole basis for any safety-, structural-, or code-related decision. The software is provided “as is.” Please read Section 6 carefully.

1. This agreement

This End User License Agreement (“Agreement”) is between you (“you,” “Licensee”) and Caliper App LLC, a Colorado limited liability company (“Caliper App LLC,” “we,” “us”). It governs your use of the Caliper software application for macOS and Windows, including updates and documentation (the “Software”), however you obtained it — whether from the Apple Mac App Store or directly from us (for example, a download from caliperapp.co). By downloading, installing, or using the Software, you agree to this Agreement. If you do not agree, do not use the Software.

2. Grant of license

Subject to this Agreement, we grant you a personal, non-exclusive, non-transferable, revocable license to download and install the Software and use it on devices running macOS or Windows that you own or control. Caliper is licensed on a per-seat basis: unless stated otherwise at the time of purchase, each license may be activated on one device at a time, and the macOS and Windows versions are separate products that require separate licenses. If you obtained the Software from the Apple Mac App Store, your license is also subject to the Apple Media Services Terms (the “Usage Rules”) and the additional terms in Section 13. If you obtain the Software on behalf of an organization, the license is for that organization’s internal business use.

3. Trial and purchase

Caliper is offered two ways, and how you obtain a paid license depends on where you got it. (a) Mac App Store — Caliper is a paid application; your one-time purchase through Apple includes the full Software, and Apple processes the purchase, billing, and refunds under Apple’s terms. (b) Direct download (from caliperapp.co) — Caliper is free to download and includes a 30-day trial of the full app; after the trial ends, the Software continues to open and view PDFs, but saving, printing, and editing are disabled until you activate a paid license, purchased through our authorized reseller and Merchant of Record, Lemon Squeezy (Lemon Squeezy, Inc.), which processes payment, applicable taxes, and refunds and issues your license key. You activate a direct license by entering the key; each direct license is valid for one device at a time, and you may deactivate a device to move the license to another.

4. Restrictions

You may not: (a) copy, distribute, sublicense, rent, lease, or sell the Software, or share, publish, or transfer your license key, except as expressly permitted by this Agreement (and, for copies obtained through the Mac App Store, the App Store Usage Rules); (b) reverse engineer, decompile, or disassemble the Software, except to the limited extent applicable law expressly permits; (c) remove or alter any proprietary notices; (d) use the Software in violation of any applicable law; or (e) circumvent, disable, or interfere with the Software’s trial, licensing, or activation mechanisms.

5. Ownership

The Software is licensed, not sold. Caliper App LLC retains all right, title, and interest in and to the Software, including all intellectual property rights. No rights are granted to you except as expressly set out in this Agreement.

6. Measurements, scale & professional reliance — please read

Caliper provides measurement, scale calibration, area and quantity takeoff, dimensioning, angle, OCR-based scale detection, and related tools to assist you. All measurements, dimensions, scales, areas, volumes, quantities, angles, counts, OCR results, and any other values or outputs produced by the Software are approximate and are provided for convenience and informational purposes only. Their accuracy depends on many factors outside our control, including the accuracy, scale, resolution, and integrity of the underlying PDF or source drawing, your calibration inputs, page scaling or distortion, and how the document was created.

You are solely responsible for independently verifying every measurement, dimension, and output against the authoritative source documents, actual field conditions, governing codes and standards, and the responsible design professional’s sealed and stamped drawings before relying on them for any estimate, bid, order, purchase, fabrication, construction, permitting, safety, or other decision. A dimension or measurement shown, scaled, or reported in Caliper may not match the true dimension, and Caliper App LLC is not responsible for any dimension, measurement, scale, area, volume, or quantity error, or for any loss, cost, rework, delay, injury, or damage arising from your reliance on any output of the Software.

Do not use Caliper as the sole or controlling basis for any decision affecting life safety, structural integrity, fire- or life-safety systems, code compliance, or legal compliance. Caliper is not a substitute for professional judgment, a licensed land survey, a stamped engineering or architectural drawing, or sealed construction documents. The responsible licensed professional remains solely responsible for the accuracy and adequacy of all dimensions, quantities, and design decisions.

By using the measurement, scale, dimensioning, and related tools, you knowingly assume all risk arising from their use and from any inaccuracy in their outputs.

To the fullest extent permitted by law, you agree to indemnify, defend, and hold harmless Caliper App LLC and its members from and against any third-party claim, loss, liability, or expense (including reasonable attorneys’ fees) arising out of or relating to your use of, or reliance on, any measurement, dimension, or other output of the Software.

7. Disclaimer of warranties

TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED “AS IS” AND “AS AVAILABLE,” WITH ALL FAULTS AND WITHOUT WARRANTY OF ANY KIND. CALIPER APP LLC DISCLAIMS ALL WARRANTIES, EXPRESS, IMPLIED, OR STATUTORY, INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, ACCURACY, PRECISION, AND NON-INFRINGEMENT. WE DO NOT WARRANT THAT THE SOFTWARE WILL BE ERROR-FREE, THAT ANY MEASUREMENT OR OUTPUT WILL BE ACCURATE, OR THAT THE SOFTWARE WILL MEET YOUR REQUIREMENTS.

8. Limitation of liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, IN NO EVENT WILL CALIPER APP LLC OR ITS MEMBERS BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES, OR FOR ANY LOSS OF PROFITS, REVENUE, DATA, OR GOODWILL, OR FOR ANY COSTS ARISING FROM RELIANCE ON ANY MEASUREMENT OR OUTPUT OF THE SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. OUR TOTAL CUMULATIVE LIABILITY FOR ALL CLAIMS RELATING TO THE SOFTWARE WILL NOT EXCEED THE GREATER OF (A) THE TOTAL AMOUNT YOU PAID FOR THE SOFTWARE, OR (B) ONE HUNDRED U.S. DOLLARS (US $100).

Some jurisdictions do not allow the exclusion or limitation of certain warranties or damages, so some of the above limitations may not apply to you.

9. Updates

We may provide updates to the Software, which are governed by this Agreement unless accompanied by a separate license. We are not obligated to provide updates, maintenance, or support.

10. Term and termination

This Agreement is effective until terminated. It terminates automatically if you breach any of its terms. On termination, you must stop using and delete all copies of the Software. Sections 5 through 8, 12, and 13 survive termination.

11. Export & compliance

You represent that you are not located in a country subject to a U.S. Government embargo or designated as “terrorist supporting,” and that you are not listed on any U.S. Government restricted-party list. You agree to comply with all applicable export and import laws.

12. Governing law

This Agreement is governed by the laws of the State of Colorado, excluding its conflict-of-laws rules, and by applicable U.S. federal law. Disputes will be resolved as described in our Terms of Service — good-faith negotiation, then binding arbitration in Pitkin County, Colorado.

13. Apple App Store — additional terms

This Section applies only if you obtained the Software through the Apple Mac App Store. If you obtained Caliper directly from us (for example, a download from caliperapp.co), this Section does not apply. Where it does apply, you acknowledge and agree:

This Agreement is between you and Caliper App LLC only, and not with Apple. Apple is not responsible for the Software or its content.
Your license to use the Software is limited to use on Apple-branded devices you own or control, as permitted by the App Store Usage Rules.
Caliper App LLC, not Apple, is solely responsible for the Software and for any maintenance and support. Apple has no obligation to furnish support.
If the Software fails to conform to any applicable warranty, you may notify Apple, and Apple may refund the purchase price (if any). To the maximum extent permitted by law, Apple has no other warranty obligation, and any other claims relating to the Software are the responsibility of Caliper App LLC.
Caliper App LLC, not Apple, is responsible for addressing any claims that the Software or your use of it infringes intellectual property rights, and for product-liability and legal/regulatory-compliance claims, to the extent not disclaimed by this Agreement.
Apple and its subsidiaries are third-party beneficiaries of this Agreement and may enforce it against you.

14. Contact

Caliper App LLC — support@caliperapp.co