Aqualizer DE

Terms and conditions

Last updated: 30 September 2026

This is a courtesy translation. The German version is legally binding.

Summary

1 Provider

EDV-Technik Dennis Weimer
Owner: Dennis Weimer
Franz-Rector-Straße 1
55411 Bingen am Rhein
Germany

Email: info@weimex.de

2 Scope

2.1 These terms apply to the use of Aqualizer: the website aqualizer.app, the Aqualizer app for iOS and Android and the web app (together “Aqualizer”), by consumers and businesses.

2.2 The version in force when you create your account or make a purchase applies. Later changes only apply under section 13.

2.3 Deviating terms of the user only apply if we agree to them in text form.

2.4 Purchases in the app via the App Store or Google Play are additionally subject to Apple’s or Google’s terms (see 6.5).

3 Services

3.1 Scope. Aqualizer helps you care for private aquariums: manage tanks, fish and plants, record and assess water values, plan and get reminded of maintenance, calculators, assistants and AI-assisted assessments.

3.2 Local first. The app stores your data on your device. It only reaches our server when you use a feature that needs it, such as the account, backup, sync between devices or an AI feature.

3.3 Free and Pro. The app can be used free of charge for good, including an allowance of AI credits (section 5) and backup to your account. Aqualizer Pro adds analyses, planning, sync between devices, the web app and more AI credits per month. The app and the website show which features belong to Pro before you buy.

3.4 Availability. Features on your device work offline. For features that need our server we do not owe uninterrupted availability.

3.5 Further development. We may develop Aqualizer further and change features where necessary to keep it in conformity with the contract (§ 327e BGB) or for a valid reason. Such a change must not cost you extra. If it impairs Pro more than insignificantly, we inform you at least 30 days in advance and you may cancel Pro free of charge within 30 days (§ 327r BGB).

4 Account

4.1 An account is optional. You need it for backup, sync between devices, the web app and purchases on the web.

4.2 You can create an account from age 16; younger people only with the consent of a parent or guardian. Purchases require full legal capacity or the consent of a legal guardian.

4.3 Keep your login details secret and tell us immediately if you suspect misuse.

5 AI features and credits

5.1 Credits. AI features use credits; the app shows how many before you start. Credits from the monthly allowance (free or Pro) expire at the end of the month without carry-over. Credits from a purchased pack do not expire. Credits have no cash value, cannot be transferred and are not paid out. If an AI request fails, you get the credits back.

5.2 No guarantee. AI answers are generated automatically and may be wrong, incomplete or outdated. The app sends its own assessment along and shows warnings independently of the AI.

5.3 Your responsibility. Recommendations are guidance. You decide on keeping, health, stocking and treatment of your animals and plants yourself.

5.4 No veterinary advice. Aqualizer does not replace a vet.

5.5 Processing. For an AI answer we send the necessary data (e.g. tank, stock and water values, the photo for photo features) without your name or email address to an AI service provider. The privacy policy names them.

6 Prices, term and payment

6.1 We offer Aqualizer Pro as a monthly or yearly subscription and credit packs as one-off purchases. Promotional prices apply for the period stated at checkout; afterwards the regular price stated there applies. We email you before a promotional price on the web ends.

6.2 The prices shown before purchase apply. All prices are final prices including VAT.

6.3 Contract on the web. By clicking the payment button at checkout you make a binding offer. The contract is concluded when we activate Pro or add the credits. You receive a confirmation by email. Web purchases require an account with a confirmed email address.

6.4 Payment on the web is handled by Stripe Payments Europe, Ltd., Dublin, Ireland. We do not receive full payment details. The subscription is billed in advance at the start of each term and renews for the same term unless you cancel beforehand (section 8).

6.5 Purchases in the app are made via the App Store (Apple) or Google Play (Google). Payment, renewal, cancellation and refunds are handled by Apple or Google under their terms; you cancel in your store’s subscription settings. The Pro features are governed by these terms.

6.6 If a payment fails, we inform you and set a reasonable deadline. Until then we may suspend Pro; your data is kept.

6.7 We announce price changes for a running subscription at least six weeks in advance in text form. You may cancel free of charge as of that date.

7 Right of withdrawal for consumers

7.1 The following right of withdrawal applies to purchases from us on the web (Pro subscription and credit packs). For purchases in the app Apple’s or Google’s rules apply.

7.2 Withdrawal

You have the right to withdraw from this contract within fourteen days without giving any reason. The withdrawal period is fourteen days from the day the contract is concluded. To exercise it, inform us (EDV-Technik Dennis Weimer, Franz-Rector-Straße 1, 55411 Bingen am Rhein, Germany, email: info@weimex.de) by a clear statement (e.g. a letter or an email). You may use the model withdrawal form in the German version, but this is not required. It is sufficient to send your notice before the period expires.

7.3 If you withdraw, we refund all payments received from you without undue delay and at the latest within fourteen days, using the same means of payment, free of charge.

7.4 Pro subscription: if you requested the service to begin during the withdrawal period (Pro is activated right after purchase, as the checkout states), you pay an amount proportionate to what has been provided until you inform us of the withdrawal.

7.5 Credit packs: the right of withdrawal applies for the full period even if you have used the credits, without any compensation. Remaining credits of the pack are removed.

8 Cancellation and deletion

8.1 You can cancel Pro at any time for the end of the booked term, without giving reasons: via “Cancel contracts here” (on every page of the website and in the app’s settings, no sign-in needed), via the customer portal in the app or by email to info@weimex.de. App purchases are cancelled in your store’s subscription settings.

8.2 Pro stays active until the end of the paid period. Afterwards the free version continues and your data is kept; only sync between devices and the web app stop.

8.3 You can delete your account at any time in the app. A running web subscription is cancelled for the end of the term.

8.4 The right of both parties to terminate for good cause remains unaffected.

8.5 We may cancel Pro with 30 days’ notice to the end of a term.

9 Defects and updates

The statutory rules on contracts for digital products (§§ 327 ff. BGB) apply. We provide the updates needed to keep Aqualizer in conformity with the contract, including security updates (§ 327f BGB). Report defects to info@weimex.de or via “Feedback” in the app.

10 Liability

10.1 We are liable without limitation for intent and gross negligence, for injury to life, body or health, under the Product Liability Act, under a guarantee and for fraudulently concealed defects. Losses of livestock are property damage in legal terms.

10.2 For simple negligence we are only liable for breach of an essential contractual obligation and only for the foreseeable damage typical of the contract.

10.3 The app stores your data on your device. Use backup or export so that losing a device does not cost you data. Liability for data loss is limited to the effort of restoring from a backup.

11 Privacy

How we process personal data is described in the privacy policy.

12 Prohibited use

In particular: several accounts to obtain credits or promotional prices more than once; automated access to content or AI features; attacks on security or availability; unlawful content such as photos you have no rights to. We first ask you to remedy a breach and set a deadline, unless the breach is serious.

13 Changes to these terms

We may change these terms for the future for a valid reason. We inform you at least four weeks in advance in text form, including your right to object. If you do not object in text form by the effective date, the change is deemed accepted; if you object, both parties may cancel free of charge as of that date.

14 Applicable law and disputes

German law applies; mandatory consumer protection rules of your country of residence remain unaffected. We are neither willing nor obliged to take part in consumer arbitration proceedings.