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// terms of service & license agreement

TERMS OF SERVICE

& License Agreement · Last updated: May 20, 2026

Diffract is licensed to You (End-User) by SmallSoftLoaf Software - Kevin Jung, located and registered at Walkmühlenstraße 28, Leutenbach, 71397, Germany ("Licensor"), for use only under the terms of this Agreement.

By downloading, installing, purchasing, or using the Licensed Application, You indicate that You agree to be bound by all of the terms and conditions of this Agreement, and that You accept this Agreement. If You do not agree to these terms, do not download, install, purchase, or use the Licensed Application.

_01 · Purchase & Payment

1.1 One-Time Purchase

Diffract is sold as a one-time purchase. There is no subscription. When You purchase a license, You pay once and receive a perpetual license key subject to the version ceiling described in Section 3.4.

1.2 Merchant of Record

Our order process is conducted by our online reseller Paddle.com. Paddle.com is the Merchant of Record for all our orders. Paddle provides all customer service inquiries and handles returns.

Depending on your location, the Merchant of Record entity is one of:
  • Paddle.com Market Limited — 18-29 Mora Street, London, EC1V 8BT, UK (non-US customers)
  • Paddle Payments Limited — 42 Pearse Street, Dublin 2, D02 HV59, Ireland (non-US customers)
  • Paddle.com Inc — 3811 Ditmars Blvd #1071, Astoria, NY 11105, USA (US customers)
Your purchase is additionally subject to Paddle's Buyer Terms.

1.3 Pricing & Taxes

Prices are displayed in your regional currency at checkout and include all applicable taxes (e.g. VAT) where required by law. The price shown at checkout is the final amount charged.

_02 · The Application

Diffract ("Licensed Application") is a piece of software created to compare files and directories side by side. It is designed for desktop computers running Windows, macOS, or Linux.

_03 · Scope of License

3.1 License Grant

You are given a non-transferable, non-exclusive, non-sublicensable license to install and use the Licensed Application on devices that You own or control, subject to the seat count restrictions set out in Section 3.3.

3.2 Updates

This license also governs any updates of the Licensed Application provided by Licensor that replace, repair, or supplement the Licensed Application, unless a separate license is provided for such update, in which case the terms of that new license govern. See Section 3.4 for version ceiling rules.

3.3 License Tiers and Seat Counts

Free tier. When You download and run Diffract without activating a license key, You use the Free tier. The Free tier may be used on any number of devices, for any purpose including commercial use. Redistribution is not permitted; please direct others to our website instead.

Pro tier. When You purchase and activate a license key, You use the Pro tier. Your license key specifies a seat count. The seat count is the maximum number of machines on which the activated Licensed Application may be concurrently installed. Installing the activated Licensed Application on more machines at the same time than your seat count allows is a breach of this Agreement. Before activating on a new machine that would exceed your seat count, you must first deactivate the Licensed Application on one of the existing machines.

Multi-seat Pro keys may be shared across members of a single legal entity ("Organisation"). Subsidiaries, affiliated companies, and contractors are not automatically included unless the key was explicitly purchased to cover them.

3.4 Version Ceiling

Your license key contains a version ceiling. It entitles You to run any version of the Licensed Application up to and including the version specified in the key. If the Licensor releases a new major version beyond that ceiling, You may continue using the version You already have; You will not be entitled to activate the new version without purchasing an upgraded key. The Licensor will always clearly communicate which versions a new key covers.

3.5 Restrictions

You may not:
  • share or make the Licensed Application available to third parties, or sell, rent, lend, lease, or otherwise redistribute the Licensed Application;
  • reverse engineer, translate, disassemble, integrate, decompile, remove, modify, combine, create derivative works of, adapt, or attempt to derive the source code of the Licensed Application, or any part thereof, except as expressly permitted by applicable law;
  • copy (except as expressly authorised by this Agreement) or alter the Licensed Application or portions thereof, except that You may create and store copies only on devices You own or control for backup purposes;
  • remove any intellectual property notices from the Licensed Application;
  • circumvent, bypass, or tamper with the license validation system or any security features of the Licensed Application.

3.6 Your Work Product

Any files, workflows, scripts, or integrations You create using the Licensed Application remain Your property. The Licensor makes no claim over Your work product solely because it was produced using Diffract.

3.7 License Key Transfer

Your license key is personal to You (or Your Organisation). You may not sell, give away, rent, or transfer it to any third party without the Licensor's prior written consent. A key obtained second-hand may have been revoked by the Licensor.

3.8 Violations

Violations of the obligations above, as well as any attempt at such infringement, may be subject to prosecution and damages.

3.9 Modification of Terms

The Licensor reserves the right to modify the terms and conditions of this Agreement. Changes will not apply retroactively to the version of the Licensed Application You downloaded under a previous version of this Agreement, unless You activate a new update or use an online service provided by the Licensor.

_04 · Technical Requirements

The Licensor attempts to keep the Licensed Application updated so that it complies with updated operating system versions and hardware. You are not granted rights to claim any specific update.

The Licensed Application targets Windows 10 or later, macOS 12 or later, and mainstream Linux desktop distributions. The Licensor does not guarantee compatibility with all hardware configurations.

_05 · No Maintenance or Support

The Licensor is not obligated, expressly or implied, to provide any maintenance, technical, or other support for the Licensed Application. The Licensor hopes to continue releasing updates and improvements but cannot commit to any specific roadmap or timeline.

_06 · Liability

6.1The Licensor's responsibility in the case of a violation of obligations and tort is limited to intent and gross negligence. Only in the case of a breach of essential contractual obligations (cardinal obligations) shall the Licensor also be liable for slight negligence. In any case, liability is limited to the foreseeable, contractually typical damages. This limitation does not apply to injuries to life, limb, or health.

6.2To the maximum extent permitted by applicable law, the Licensor's total aggregate liability to You for all claims arising out of or relating to this Agreement or the Licensed Application — whether in contract, tort, or otherwise — shall not exceed the greater of (a) the total amount You paid for the Licensed Application in the twelve (12) months preceding the claim, or (b) five euros (€5). This monetary cap does not apply to liability for intent, gross negligence, or injuries to life, limb, or health, which remain governed by Section 6.1.

6.3 The Licensor takes no accountability or responsibility for any damages caused due to a breach of duties according to Section 3 of this Agreement. To avoid data loss, You are required to maintain independent copies of any files You edit using the Licensed Application. You are aware that unauthorised modifications or manipulation of the Licensed Application may cause You to lose access to it.

_07 · Warranty

7.1 The Licensed Application is provided "as is", without warranty of any kind, express or implied, including but not limited to warranties of merchantability, fitness for a particular purpose, or non-infringement. The Licensor does not warrant that the Licensed Application will be error-free, uninterrupted, or free of defects. To the maximum extent permitted by applicable law, You assume all risk arising from Your use of the Licensed Application.

7.2 Statutory warranty rights that cannot be excluded or limited under applicable law — in particular the rights of consumers under German law (§§ 434 ff. BGB) — remain unaffected by the above disclaimer.

7.3 To report a defect, contact the Licensor using the details in Section 11. If the Licensor confirms that the Licensed Application is defective, the Licensor will attempt to remedy the defect by providing a corrected version. If the defect cannot be remedied within a reasonable time, the Licensor will refund the amount You paid for the Licensed Application.

7.4 If You are a business (entrepreneur), any claim based on defects expires after a statutory limitation period of twelve (12) months after the Licensed Application was made available to You. The statutory periods of limitation given by law apply for users who are consumers.

_08 · Refund Policy

8.1 You may request a full refund within 30 days of your purchase, for any reason. No explanation is required. Because Paddle is the Merchant of Record, refund requests are handled directly by Paddle — please use the support link in your purchase confirmation email or visit paddle.net with your order number. For disputes or escalations, You may also contact the Licensor at [email protected].

8.2 Refunds are processed by Paddle and typically appear on your original payment method within 5–10 business days, depending on your bank or payment provider. Your license key will be deactivated upon refund.

8.3 This 30-day refund right is in addition to — and does not limit — any statutory withdrawal or return rights You may have under applicable law, including German consumer law (§§ 312 ff. BGB) and the EU Consumer Rights Directive.

8.4After 30 days, refunds may be granted at the Licensor's sole discretion in cases of confirmed defects that cannot be remedied (see Section 7.3).

_09 · Product Claims

The Licensor is solely responsible for addressing any claims of the End-User or any third party relating to the Licensed Application or the End-User's possession and/or use of it, including but not limited to:

  • product liability claims;
  • any claim that the Licensed Application fails to conform to any applicable legal or regulatory requirement; and
  • claims arising under consumer protection, privacy, or similar legislation.

_10 · Legal Compliance

You represent and warrant that You are not located in a country subject to a German Government or EU embargo, or that has been designated as supporting terrorism by the relevant authorities; and that You are not listed on any German, EU, or UN prohibited or restricted parties list.

_11 · Contact Information

For general inquiries, complaints, questions, refund requests, or warranty claims concerning the Licensed Application, please contact:

SmallSoftLoaf Software - Kevin Jung
Walkmühlenstraße 28, Leutenbach, 71397, Germany
USt.ID: DE462096083

[email protected]

_12 · Termination

This license is valid until terminated by the Licensor or by You. Your rights under this license will terminate automatically and without notice from the Licensor if You fail to adhere to any term of this Agreement.

You may terminate this Agreement at any time by uninstalling the Licensed Application from all devices and destroying all copies in Your possession.

Upon termination, You must stop all use of the Licensed Application and destroy all full or partial copies of it. Sections 6 (Liability), 9 (Product Claims), 13 (Intellectual Property Rights), and 15 (Miscellaneous) survive termination.

_13 · Intellectual Property Rights

The Licensor is solely responsible for the investigation, defence, settlement, and discharge of any third-party intellectual property infringement claim relating to the Licensed Application or the End-User's possession and use of it.

The Licensed Application, including its code, assets, and license validation system, remains the exclusive property of the Licensor. Purchasing a license transfers no ownership rights; You are purchasing a permission to use the Licensed Application under the terms of this Agreement.

_14 · Applicable Law

This Agreement is governed by the laws of Germany, excluding its conflicts of law rules.

_15 · Miscellaneous

15.1 If any term of this Agreement is or becomes invalid, the validity of the remaining provisions is not affected. Invalid terms will be replaced by valid ones formulated to achieve the original purpose as closely as possible.

15.2 Changes and amendments to this Agreement are only valid if made in writing by the Licensor.

15.3 If You submit a suggestion or feature request to the Licensor, You do so free of charge. The Licensor may use Your suggestion in any way without compensation. If You believe a suggestion has commercial value and expect payment for it, You must notify the Licensor of that expectation before sharing the suggestion.

// Terms of Service & License Agreement · SmallSoftLoaf Software - Kevin Jung · Last updated May 20, 2026
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