Calcly

Terms of Use

Last updated: 5 November 2026

These terms apply to your use of Calcly (the "app"), published by Diego Ferreira, based in Ireland, under the name DF Dev Apps ("we", "us"). By downloading or using the app, you agree to them. The Google Play Terms of Service also apply. Where they conflict, Google Play's terms apply to the extent the law requires.

What the app does

The app is a basic and scientific calculator with a unit converter and a history of your calculations. Calculations and conversions are worked out on your device, and the history stays there.

Accuracy and availability

We work hard to keep the app correct and reliable. However, we can't guarantee that its results are always accurate, complete or current, or that it will always work without errors or interruptions. Results are rounded for display, and some functions, such as trigonometric and logarithmic functions, are computed with limited precision. Check any result that matters, for example for money, medicine, engineering or construction, by another method before you rely on it.

Using the app

You may use the app for personal or business purposes. You agree not to misuse it, for example by interfering with its operation, or by copying, modifying or redistributing it except as the law allows.

Intellectual property

The app, its design and its content belong to us or our licensors. Open-source components are used under their own licenses. Your calculations and their results are yours.

Third-party services

The app relies on these services:

How they handle your data is described in our Privacy Policy.

Ads

The app is free and funded by ads from Google AdMob and its partners. We don't control the content of ads or the websites they link to, and we aren't responsible for them. In the European Economic Area, the UK and Switzerland, ads are personalized only if you agree in Google's consent message. Where that message is shown, you can change your choice under Settings > Privacy > Ad privacy choices (Settings > Privacy options in Calcly 2.0). The Privacy Policy explains how.

Changes and availability

We may change, suspend or discontinue the app, or any feature, at any time. Before we add paid features, we will update these terms and the Privacy Policy.

Liability

To the fullest extent the law permits, we are not liable for any loss or damage arising from your use of, or reliance on, the app or its results. Nothing in these terms limits liability that can't be limited under Irish law, such as liability for fraud, or for death or personal injury caused by negligence. Nothing in them affects your statutory rights as a consumer.

Governing law

These terms are governed by the laws of Ireland. You can bring a claim in the courts of Ireland. If you are a consumer living elsewhere in the European Union, you can also bring it in the courts of your country, and you keep the protection of its mandatory consumer laws.

Changes to these terms

We may update these terms. The date at the top shows when they last changed, and we note significant changes in the app's release notes. If you keep using the app after a change, the updated terms apply. If a translation of these terms differs from this English version, the English version applies.

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