Jeweler Calculator

Public Offer

Revision of October 29, 2026 · Русский

Translation from Russian. In case of discrepancy, the Russian text prevails.

1. What this document is

This is a public offer: a proposal to enter into a contract for the paid provision of services on the terms set out below. The offer is addressed to any person with full legal capacity who has reached the age of 18 and is made in accordance with Articles 435 and 437 of the Civil Code of the Russian Federation.

The party that provides the service and accepts payment is referred to in this document as the Contractor; its details are given in Section 14. The party that pays for the service is referred to as the Customer. The Contractor is the same regardless of the payment method.

The contract is deemed concluded at the moment of payment or, for a purchase through the app marketplace, at the moment the marketplace confirms the purchase. Payment constitutes acceptance of the offer under Article 438(3) of the Civil Code of the Russian Federation: it means that you have read this document and fully agree with it. No separate paper contract is signed.

The Terms of Use and the Personal Data Processing Policy apply together with this offer. By paying for a Subscription, you accept them too.

2. Terms used below

3. Subject of the contract

The Contractor provides the Customer with access to Premium for the term of the selected Plan, and the Customer pays for that access.

Access paid for by any method is linked to the Customer’s account and is available in the App when signed in to that account — on no more than three devices at the same time. A device on which the Subscription was purchased in an app marketplace does not count towards this number: access on it is opened by the marketplace itself. Payment is not possible without an account.

If all three places are taken, the Customer frees one of them in the App (“Settings” → “Account”) — no more than three times in 30 days; beyond that, through support. A device from which the account has not been used for 60 days is freed automatically. The limit does not reduce the scope of access: it prevents several people from using one Subscription (section 9).

The service consists specifically of providing access. The Contractor does not perform calculations for the Customer, does not provide individual consultations and is not liable for the results of applying calculations; see Section 9 of the Terms of Use for details, which forms part of this contract.

The App’s feature set changes: calculators are added and outdated ones are replaced. The scope of Premium on the date of payment is not an obligation to keep it unchanged until the end of the Paid Period. The extent of access, however, is not reduced: the features the Customer paid for remain available or are replaced with equivalent ones.

4. Price and payment procedure

The Customer chooses the payment method. It determines the currency and the procedure for payment, renewal, cancellation and refunds, which are described below and in Sections 5 and 7.

4.1. Card payment through the Payment Service

The Subscription price is stated in roubles on the website and in the App and applies at the time of purchase. The Contractor applies the special “professional income tax” regime and is not a VAT payer; therefore, value added tax is not included in the price.

The Contractor does not receive or store bank card data: it is processed by the Payment Service and the acquiring bank under their own rules and the requirements of the payment systems.

The Payment Service’s own documents apply on the payment page, including its privacy policy. The terms of the Payment Service are set by the Payment Service itself; the Contractor has no influence over them and is not responsible for changes to them.

A receipt is generated in the manner established for the professional income tax and is sent to the email address of the account. Therefore, the address must be valid and belong to the Customer.

A repeat card payment extends access from the end date of the Paid Period already paid for, not from the date of payment, so no days are lost.

Fees charged by the Customer’s bank, if any, are paid by the Customer separately and are not included in the Subscription price.

4.2. Purchase through the app marketplace

The Subscription price is shown by the app marketplace before the purchase is confirmed, in the currency set by the marketplace for the country of the Customer’s account. The price may include taxes that the marketplace calculates and withholds under the laws of the Customer’s country.

The payment is processed by the app marketplace using the payment details linked to the Customer’s marketplace account and under its own rules: the Google Play Terms of Service or the Apple Media Services Terms and Conditions. The Contractor does not receive the Customer’s payment details or marketplace account data: the marketplace provides the Contractor only with the information about the completed purchase that is needed to open access.

The procedure for processing the payment, charging, renewal and refunds, to the extent determined by the app marketplace, is governed by its rules. In all other respects, the relationship of the parties is governed by this offer.

The app marketplace is not a party to the contract and is not responsible for providing the service. For questions about access to Premium, the Customer contacts the Contractor.

The purchase confirmation is sent to the Customer by the app marketplace. Payment documents that are required by law are issued by the Contractor in the established manner.

The app marketplace may offer a free trial — free access to Premium for the period shown before the purchase is confirmed. Eligibility is decided by the marketplace; as a rule, a trial is given once to someone who has not yet subscribed to the App. In this case the agreement is concluded when the trial begins. Unless automatic renewal is cancelled before the trial ends, the marketplace charges the price of the selected plan and the Subscription continues as a paid one (section 5.2).

4.3. If more than one method is used

Subscriptions purchased by different methods — by card and in an app marketplace, or in different marketplaces — exist independently of each other: each is renewed, cancelled and refunded under its own rules, and purchasing a new Subscription does not cancel the previous one. Within one app marketplace there is a single Subscription: when another plan is chosen, the marketplace replaces the previous plan with the new one under its own rules, taking the unused part of the paid period into account. Before paying, the Customer should check in the personal account or in the App whether they already have an active Subscription.

5. Automatic renewal (recurring payments)

5.1. Subscription paid by card

Subscription terms. A Subscription paid by card through the Payment Service is access to Premium for the term of the Plan: 1, 6 or 12 months. The price and frequency of each Plan are shown on the payment page on the website and in the App before payment — for example, “399 ₽ every month”. The first period is paid immediately, the following ones automatically, until the Customer cancels renewal.

Consent to automatic charges. A Subscription can be paid for only with the Customer’s consent to automatic charges. Consent is given by a separate checkbox “I agree to automatic charges under the terms of the offer” on the payment page; it is not pre-ticked. The Contractor keeps a history of consents: the date, Plan, amount and the revision of the offer the Customer agreed to.

Charging procedure. By giving consent, the Customer instructs the Payment Service to charge the price of the next period of the same Plan to the same card, and to continue doing so until cancelled. The charge is made one day before the end of the Paid Period. The amount charged is the amount of the first payment. There are no hidden or additional payments.

Three days before each charge the Contractor sends a reminder with the date and amount to the account email. There is no automatic renewal without notice.

If a charge fails — for example, the card has insufficient funds or has expired — it is retried once a day. After three failed attempts in a row, automatic renewal is turned off, an email is sent, and access closes at the end of the Paid Period.

Automatic charges are possible only with cards issued by Russian banks: the Payment Service does not process them for foreign cards.

Cancellation. Automatic renewal can be cancelled at any time in one step — with the “Turn off auto-renewal” button in the App (“Settings” → “Account”) or in the personal account on the website, or by writing to support@jewelercalc.ru from the account email. Cancellation takes effect immediately and for the future: there will be no next charge, and access remains until the end of the period already paid. Renewal can be cancelled right after payment.

Refunds. An automatic charge is payment for the next period, and the refund rules of section 7 apply to it. In addition, within 10 days the Contractor fully refunds an automatic charge made after the Customer cancelled renewal, or one larger than the amount the Customer agreed to.

Price changes. A change in the Plan price on the website and in the App does not affect automatic renewal already enabled: the amount the Customer agreed to is charged. The Contractor does not charge a different amount without the Customer’s new consent. If the Contractor can no longer renew the Subscription at the previous price, it notifies the Customer by email at least 30 days before the next charge; without new consent, automatic renewal is turned off and access remains until the end of the Paid Period.

5.2. Subscription purchased through the app marketplace

A Subscription purchased through the app marketplace renews automatically until the Customer cancels it; this is a condition of the marketplace and is accepted together with the purchase. Renewal is carried out by the marketplace: it charges the price of the next period to the payment details of the Customer’s marketplace account within the time limits set by its rules. The marketplace notifies the Customer of any change in the Subscription price and, if its rules require it, requests consent to the new price.

If the charge fails, the marketplace may repeat the attempts and retain access during a grace period under its rules. If payment is still not received, the Subscription is not renewed and access is closed.

Automatic renewal can be cancelled at any time in the subscription settings of the app marketplace account. To prevent the next charge, renewal must be cancelled within the time limit set by the marketplace, usually no later than 24 hours before the end of the current period. Cancellation takes effect for the future: access is retained until the end of the Paid Period.

Deleting the App, signing out of the account, deleting the account or emailing support does not cancel a Subscription in the app marketplace.

6. When the service is deemed provided

This is a key term of the contract, and the Customer should read it before paying.

The service is deemed provided by the Contractor in full at the moment access is opened, that is, at the moment when, after receipt of payment or confirmation of the purchase by the app marketplace, the Subscription validity term is recorded in the Customer’s account and the Premium features become available. This usually happens within a few minutes after payment.

The Paid Period is not the term for providing the service but the term for using access that has already been provided. The service is not divided into days, weeks or months, is not provided in parts and has no unprovided part.

The parties recognise the electronic records of the Contractor’s information system as proof that the service has been provided: the record of the payment or of the purchase confirmed by the marketplace and the record of the Subscription with the access end date. No certificate of services rendered is drawn up. If the Customer needs a statement of their Subscription and payments, the Contractor will send it upon written request.

Claims regarding the quality of the service are accepted within 5 business days from the date access is opened, at support@jewelercalc.ru. If no claim is received within this time, the service is deemed accepted by the Customer without objections.

Subsequent use of access (which calculators were opened and how often) does not affect the fact that the service has been provided. The Customer may choose not to use access; this is the Customer’s decision and it creates no obligations for the Contractor.

7. Subscription cancellation and refunds

The Customer may cancel the Subscription at any time. Cancellation means cancelling automatic renewal as described in Section 5: there will be no next charge, access will be retained until the end of the Paid Period and will then be closed.

Money paid for the Paid Period is not refunded, because the service has been provided by the Contractor in full at the moment access was opened (Section 6). In particular, no refund is made if the Customer:

The Contractor makes a refund in two cases, and only in these cases:

7.1. Refund procedure for card payments

The Contractor processes the refund within 10 days from the day it received the Customer’s request and the information needed for the transfer. The money is returned to the bank card used for payment. If the payment cannot be returned through the Payment Service (the time allowed for the operation has expired, the card has been closed or the amount is below the minimum set by the service), the Contractor transfers the money using the details the Customer provides upon the Contractor’s request.

The time it takes for the money to be credited depends on the Customer’s bank, is not controlled by the Contractor and may be up to 30 business days from the date the refund is processed. The Contractor’s obligation is deemed fulfilled at the moment the refund is processed and the money is debited in favour of the Customer.

On a refund, the receipt is cancelled in the manner established for the professional income tax.

7.2. Refund procedure for purchases through the app marketplace

Payments made through the app marketplace are refunded by the marketplace itself, at the Customer’s request and under its own rules. The marketplace’s rules may provide for refunds in cases not listed in this section as well; this offer does not limit such rights of the Customer.

In the two cases where the Contractor is obliged to make a refund, the Customer may request it either from the app marketplace or from the Contractor. If the marketplace has refused a refund or a refund through the marketplace is not possible, the Contractor, within 10 days from the day it received the request and the necessary information, transfers the amount due to the Customer using the details provided by the Customer. If the payment has already been refunded by the marketplace, no second refund is made.

If the app marketplace has refunded a payment to the Customer or cancelled a purchase, access provided for that payment ends from the moment the Contractor receives information about it.

8. Interruptions, blocking and circumstances beyond the parties’ control

Access to Premium depends on the operation of communication networks, app marketplaces, payment systems and third-party services. The Contractor cannot influence some of them, and the parties acknowledge this.

The following are not a defect of the service and do not give the right to demand a refund:

If the App has become unavailable in a marketplace, the Contractor provides another way to obtain it (through another marketplace or an installation file), and the obligation under the contract is deemed fulfilled. Access already paid for through the app marketplace is retained until the end of the Paid Period. If the marketplace has stopped processing payments or renewals, the Customer may purchase a Subscription by card through the Payment Service.

If Premium was unavailable through the Contractor’s fault for a total of more than 3 days within one Paid Period, the Contractor extends access for the period of unavailability. Extension of access is the sole compensation in this case; no monetary compensation is paid.

The parties are released from liability for failure to perform obligations caused by force majeure under Article 401 of the Civil Code of the Russian Federation.

9. Rights and obligations of the parties

The Contractor undertakes to:

The Customer undertakes to:

If the last two obligations are breached, the Contractor may suspend or terminate access. In that case, no refund is made on the grounds set out in Section 7. The rights granted to the Customer as a consumer by the laws of the Russian Federation are not limited by this clause.

10. Liability

The Contractor’s liability is limited to the Subscription price for the period in which the grounds for the claim arose. The Contractor is not liable for the Customer’s lost profits or indirect losses.

The Contractor is not liable for the consequences of applying the results of calculations: they are for reference and guidance only, and the Customer decides independently whether to apply them.

The rights granted to the Customer as a consumer by the laws of the Russian Federation are not limited by this section.

11. Personal data

The data the Customer provides when paying and the purchase information received from app marketplaces are processed as described in the Personal Data Processing Policy. The Contractor processes information about the payer, the payment and the purchase to perform the contract and to issue payment documents, including under Federal Law No. 422-FZ of 27.11.2018. Such processing is carried out regardless of consent.

12. Term and amendment of the offer

The offer is effective from the date of publication until it is withdrawn or replaced by a new version. Each version is kept on the website at a permanent address.

A Paid Period already paid for is governed by the version that was in effect on the date of payment. A new version applies to payments made after its publication, including automatic renewals; the amount of automatic card renewal does not change (Section 5.1).

The Russian text of the offer prevails. This English version is a translation provided for convenience; in case of any discrepancy, the Russian text applies.

13. Governing law and dispute resolution

The contract is governed by the laws of the Russian Federation.

Before going to court, the parties send each other a written claim. The Customer’s claim is sent to support@jewelercalc.ru; the response time is 30 calendar days. If no agreement is reached, the dispute is resolved by a court in accordance with Russian law; the Customer, as a consumer, may file a claim with the court at their place of residence.

14. Contractor details

Aleksandr Valerievich Pankratov
Payer of the professional income tax (self-employed)
INN (taxpayer ID) 614314506782
Email: support@jewelercalc.ru

The Contractor is also the right holder of the App; see the Terms of Use.

Revision of October 29, 2026.