Terms of Use

These Terms of Use (End User License Agreement) govern the use of all apps published under the ProxApp brand on Google Play and the Apple App Store (the "Apps"). By downloading or using the Apps you agree to these terms. If you do not agree, please do not use the Apps.

1. Parties

This agreement is between Gencay Tosun (ProxApp, Türkiye; the "Developer"), the developer of the Apps, and you (the "User"). How personal data is processed is described in the Privacy Policy, which forms an integral part of this agreement.

2. License

The Developer grants you a personal, non-transferable, non-exclusive, revocable license, without the right to sublicense, to use the Apps on devices you own or control, for personal or business purposes, in accordance with these terms and the usage rules of the relevant store. You may not:

• copy, modify, reverse engineer (except where permitted by law), rent, sell or distribute the Apps;
• circumvent security measures, ads or purchase verification;
• use the Apps in a way that overloads or disrupts them or the servers, or interferes with others' use;
• scrape data or create accounts with automated tools;
• use the Apps for unlawful purposes.

3. Accounts

Sossial, Energy Maintenance Report and Tofisan Order require an account.

• You must provide accurate information and keep it up to date.
• You are responsible for keeping your password confidential and for activity under your account. Tell us immediately if you notice unauthorized use.
• You must be at least 18 years old to use Sossial.
• In Energy Maintenance Report, the supervisor who creates a group sees and manages the records of the people invited to it. The group creator is responsible for informing their staff accordingly.
• You can delete your account at any time from within the app. Details: Account and Data Deletion.

4. User content and community rules (Sossial)

The drawings, files, photos, videos, messages and profile information you share on Sossial ("Content") belong to you. By sharing Content, you grant the Developer a worldwide, royalty-free, non-exclusive license to use it solely to provide the service (to store, convert, generate previews and show it to the people you choose). This license ends when you delete the Content or your account, except for copies of messages already delivered to others and legal retention obligations.

You confirm that you have the necessary rights to the Content you share. Do not share confidential drawings, trade secrets or personal data belonging to others without permission.

Zero tolerance: The following content and behavior are not allowed:

• any content relating to child sexual abuse or exploitation (CSAM/CSAE) and any inappropriate communication with children;
• obscene, pornographic or sexually explicit material;
• harassment, bullying, threats, hate speech or discrimination based on race, religion, gender, disability or similar characteristics;
• content that promotes violence, terrorism, self-harm or illegal activity;
• publishing others' personal information, confidential documents or intellectual property without permission;
• spam, fraud, malware, fake accounts or impersonation.

You can report any user or content from within the app and block users you do not want to see. Your personal chat with a blocked user is hidden and they can no longer send you notifications. Reports are reviewed within 24 hours; violating content is removed and the offending account is warned, restricted or permanently closed. Child abuse content is reported to the competent authorities. Details: Child Safety Standards.

5. In-app purchases

• Mesailerim Premium is a one-time purchase; it is not a subscription and does not renew. It unlocks ad-free use and the additional features described in the app.
• ISO 286 Tolerance Hole & Shaft – Pro (iOS) is a 1-year auto-renewable subscription. It removes ads and lets you calculate without an internet connection. The app itself is free; subscribing is optional.
  • Payment is charged to your Apple Account when you confirm the purchase. The current price is shown on the purchase screen.
  • The subscription renews automatically for the same period and price unless it is cancelled at least 24 hours before the end of the current period. Renewal is charged within the 24 hours before the current period ends.
  • You can manage the subscription and turn off auto-renewal in your iPhone's Settings > [your name] > Subscriptions, or with "Manage Subscription" in the app. Cancellation takes effect at the end of the current period; Pro features remain available until then.
  • If the price changes, Apple notifies you in advance and asks for your consent where required.
  • Pro unlocked with the one-time purchase in version 1.0, when the app was named ToleranceMate, remains valid.
• Purchases are made through Google Play Billing or the Apple App Store and are subject to that store's payment terms. The Developer never sees your payment details.
• You can restore your purchase on other devices with the same store account using "Restore purchases" in the app.
• Refunds are handled under the store's refund policy: Google Play, Apple.
• AI solution credits earned by watching rewarded ads in Scientific Calculator cannot be bought, transferred or exchanged for money.
• Moving a feature to a paid version or changing its price does not remove rights you have already purchased.

6. Advertising

The free versions of some Apps show ads. Advertisers are responsible for the content of their ads. Ads and consent options are described in the Privacy Policy.

7. Calculation results and information

The calculations, tables and information in ISO 286 Tolerance Hole & Shaft, Engineering Catalog, Bearing Catalog, Engineering Torque Calculator, Air Duct Takeoff, Scientific Calculator and Mesailerim are carefully prepared based on standards and published sources; however:

• Results are estimates for planning, training and checking. For safety-critical applications they must be verified against the relevant standards, manufacturer data and by a competent engineer before production or installation.
• Salary, severance, tax and leave calculations and the information center in Mesailerim are for information only and are not legal, financial or accounting advice. For official matters, consult your employer, the social security institution, a lawyer or an accountant.
• AI-generated solutions may be wrong; always check the result yourself, especially for exams, homework and engineering work.
• Quotes and costs created in Air Duct Takeoff and Tofisan Order are based on the prices and dimensions you enter; you are responsible for your business decisions.

8. Third-party services

The Apps may use services from Google, Apple and other providers, or open third-party apps such as ChatGPT, Gemini or map apps. These services are governed by their own terms, and the Developer is not responsible for their content. Quote and order requests you send in Tofisan Order are forwarded to Tofisan İklimlendirme; Tofisan İklimlendirme is the party to any sales contract, pricing, delivery and payment.

9. Intellectual property

The software, design, texts and icons of the Apps and the ProxApp brand belong to the Developer or are used under license. Values from standards and third-party trademarks (ISO, DIN, ANSI, Google Play, App Store etc.) belong to their owners.

10. Disclaimer of warranties

The Apps are provided "as is" and "as available". To the fullest extent permitted by applicable law, the Developer gives no express or implied warranty that the Apps will be uninterrupted, error-free or fit for a particular purpose. Your statutory rights as a consumer are not affected.

11. Limitation of liability

To the extent permitted by applicable law, the Developer is not liable for indirect, incidental, special or consequential damages, or for loss of profit, data or business, arising from the use of or inability to use the Apps. The Developer's total liability is limited to the amount you paid for the relevant App in the 12 months before the claim. Liability for intent or gross negligence and liability that cannot be limited by law are not affected.

12. Termination

If you breach these terms, the Developer may suspend or close your account and terminate your license. You may end this agreement at any time by deleting the Apps and, where applicable, closing your account. On termination your license ends; provisions that by their nature should survive (intellectual property, liability, governing law) remain in effect.

13. Apple App Store terms

If you downloaded an App from the Apple App Store, the following also applies:

1. This agreement is concluded between you and the Developer only, and not with Apple Inc. ("Apple"). The Developer, not Apple, is solely responsible for the App and its content.
2. The license is granted for use on Apple-branded products that you own or control, as permitted by the Usage Rules in the Apple Media Services Terms and Conditions; accounts accessing the App through Family Sharing or volume purchasing are also subject to these rules.
3. The Developer is solely responsible for providing maintenance and support for the App; Apple has no obligation to furnish any maintenance or support services.
4. In the event of any failure of the App to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price (if any) for the App. To the maximum extent permitted by law, Apple has no other warranty obligation with respect to the App, and any other claims, losses, liabilities, damages, costs or expenses attributable to any failure to conform to any warranty are the Developer's responsibility.
5. The Developer, not Apple, is responsible for addressing any claims by you or any third party relating to the App or your use of it, including product liability claims, claims that the App fails to conform to any legal or regulatory requirement, and claims arising under consumer protection, privacy or similar legislation.
6. In the event of any third-party claim that the App or your possession and use of it infringes that third party's intellectual property rights, the Developer, not Apple, is solely responsible for the investigation, defense, settlement and discharge of such claim.
7. You represent and warrant that you are not located in a country that is subject to a U.S. Government embargo or that has been designated by the U.S. Government as a "terrorist supporting" country, and that you are not listed on any U.S. Government list of prohibited or restricted parties.
8. Questions, complaints or claims regarding the App can be sent to the Developer at gencaytosun@hotmail.com.
9. You must comply with applicable third-party terms of agreement when using the App (for example, your wireless data service agreement).
10. Apple and Apple's subsidiaries are third-party beneficiaries of this agreement, and upon your acceptance, Apple will have the right (and will be deemed to have accepted the right) to enforce this agreement against you as a third-party beneficiary.

If there is any conflict between this section and the rest of this agreement, this section prevails for Apps downloaded from the App Store.

14. Google Play terms

If you downloaded an App from Google Play, the Google Play Terms of Service also apply. Google is not responsible for the Apps or for obligations under this agreement.

15. Governing law and disputes

This agreement is governed by the laws of the Republic of Türkiye. The courts and enforcement offices of Adana have jurisdiction over disputes. If you are a consumer, your right to apply to consumer arbitration committees and consumer courts under Turkish Law No. 6502, and the mandatory consumer protection rules of your country of residence, are not affected.

16. Changes

We may update these terms. The current version is published on this page and the date at the top changes. Significant changes are announced in the app or through store release notes before they take effect. Continuing to use the Apps after a change means you accept the updated terms.

17. Contact

Gencay Tosun (ProxApp) – gencaytosun@hotmail.com