Last updated: August 2026
An individual developer based in Texas, United States, develops and operates DualWeather. This policy explains what data we collect, why, and how we handle it, both within the app and on this website.
If you have any questions about this policy or your data, you can reach us via the contact form on this website.
We do not sell your data. DualWeather uses any data it collects solely to provide the app's functionality and experience. We do not share your information with advertisers, data brokers, or any other third parties for commercial purposes. We do not engage in cross-context behavioural advertising.
DualWeather collects only the minimum data necessary to provide its features:
DualWeather does not collect personal profiles, browsing history, contacts, photos, or any data unrelated to providing weather information. We do not use cookies or tracking technologies within the app.
DualWeather requests access to your device's location in order to provide accurate weather information for where you are. You can decline. The app's settings let you set your location by hand instead, and in that mode DualWeather asks location services for nothing at all. The place you set stands in for your device's location everywhere the app needs one: weather, severe weather alerts, precipitation notifications, custom alert thresholds, widgets, complications and background refresh. We use your location data exclusively to retrieve weather data, and we never use it for tracking, profiling, advertising, or any other purpose.
We send your location, or the coordinates of the place you set by hand, directly to the weather data provider to fulfil your weather request. We do not store it on our servers, and we do not log or retain it in any form.
When background location access is enabled (for notifications or widget updates), your device periodically sends your location to the relevant weather data provider to check for weather changes. This happens on-device. DualWeather never transmits or stores your location on any server it controls. When you set your location by hand, no device location is involved anywhere in this. DualWeather sends only the coordinates of the place you picked, and it never reads or monitors where your device actually is.
Under the Texas Data Privacy and Security Act (TDPSA), precise geolocation counts as sensitive personal data. We want to be clear: we do not sell, share, or retain your location data. We use it transiently and exclusively for weather data retrieval.
If you enable weather notifications, DualWeather uses your device's current location, or the place you set by hand, to retrieve weather data and generate alerts locally on your device. It never uses a place you are only viewing. Your device stores notification preferences and schedules locally only.
Your device generates personality-driven notification content using local processing. We do not send personal data, location data, or weather preferences to external AI services for this purpose.
DualWeather offers home screen widgets on both Apple and Android platforms. Widgets periodically refresh weather data using your device's location or a saved location you picked for that widget. When you set your location by hand, a current-location widget uses that place and reads no device location. This data retrieval follows the same process described in the Location Data section. We send your location directly to the weather data provider and never store it.
DualWeather offers an optional feature to sync your settings, saved locations, and preferences across your devices. On Android, this feature is opt-in, and DualWeather disables it by default. On Apple devices, DualWeather enables sync by default when iCloud is available, but you can turn it off at any time in the app's settings. You are always in control of whether sync is active.
On Apple devices, sync uses iCloud (CloudKit) and stores your data in your personal iCloud account. On Android devices, sync uses Google Drive's app data folder and stores your data in your personal Google account. In both cases, the synced data stays tied to your own account and is accessible only to you.
The DualWeather developer has no access to your synced data. We cannot read, view, or retrieve any data stored in your iCloud or Google Drive account through this feature. The sync operates entirely between your devices and your personal cloud account.
The synced data includes your saved locations, app preferences (such as temperature unit, notification settings, and personality selection), and notification dismissal states. The sync excludes weather data, personal information, and usage analytics.
DualWeather uses the same third-party data providers on Apple and Android devices alike:
Your device calls these providers directly over HTTPS. There is no DualWeather server in between, no account, and no key or identifier that ties a request to you. Where a provider needs coordinates to answer, we send your location, or the place you set by hand, and nothing else. We encourage you to review their respective privacy policies for details on how they handle requests.
DualWeather previously used Apple WeatherKit on Apple devices and Visual Crossing for historical data on Android devices. We removed both in August 2026 when the app became free. Neither service receives any data from DualWeather now.
DualWeather may collect anonymous diagnostic and crash data through platform-provided mechanisms (such as Apple's App Analytics or Google's Android Vitals). The platform anonymises and aggregates this data before it reaches us. It does not contain personal information, and we use it solely to identify and fix bugs or performance issues.
Where built-in bug reporting mechanisms are available within the app, we share with the developers only the data required for diagnosis of the reported issue. We use this information for the sole purpose of resolving application issues and for no other purpose. The developer reviews, actions, and then discards bug reports.
When you sign up for the DualWeather beta programme, we collect your first name, last name, and email address. When you use the contact form, we collect your name, email address, and message content.
We use your website information exclusively for:
We do not use this data for marketing, advertising, analytics profiling, or any purpose beyond what appears above.
We encrypt all personal data collected through this website (names and email addresses) at rest using AES-256-GCM encryption. We additionally hash email addresses using SHA-256 for duplicate detection, ensuring we never store plaintext emails in the lookup index.
This website uses:
DualWeather is free. There are no subscriptions, no in-app purchases, and no adverts. If you choose to support the project, this website links out to Ko-fi. The link leaves dualweather.app and opens a page Ko-fi runs.
We never see your payment details. Ko-fi and its payment processor Stripe handle the transaction under their own privacy policies. See Ko-fi's privacy policy and Stripe's privacy policy.
No purchase or contribution data flows back into the app. A contribution buys nothing extra, because every feature is already available to everyone. We do not link a contribution to a beta signup, a device, or anything else you do in DualWeather.
App data: Your device stores weather data and saved locations locally, and you can delete them at any time by removing the app. We do not retain any app data on our servers.
Beta signup data: We retain it only for as long as needed for testing and development communication. Once the beta programme concludes, we permanently delete all signup data.
Contact form messages: We retain them only as long as necessary to respond to your enquiry, then delete them.
We take reasonable measures to protect your information, including encryption at rest for all personal data stored on our servers. No method of electronic storage or transmission is 100% secure. While we strive to use commercially acceptable means to protect your data, we cannot guarantee absolute security.
The developer operates DualWeather from the United States. The third-party providers listed above process weather data requests, and their servers may be located in various countries. If you are accessing the app or website from outside the United States, please be aware that these providers may transfer, store, and process your information in the United States or other countries where they operate.
By using the app or website, you consent to the transfer of your information as described in this policy. Where required by applicable law, we put appropriate safeguards in place for international data transfers.
DualWeather is not directed at children under 13. We do not knowingly collect personal information from children under 13 in compliance with the Children's Online Privacy Protection Act (COPPA). If you are a parent or guardian and believe your child has provided us with personal data, please contact us through the contact form and we will promptly delete it.
Depending on your location, you may have certain rights regarding your personal data, including the right to access, correct, delete, or restrict the processing of your data. To exercise any of these rights, please contact us through the contact form. We will respond to requests within 30 days.
Under the Texas Data Privacy and Security Act (TDPSA), Texas residents have certain rights regarding their personal data, including the right to access, correct, delete, and obtain a copy of their data, as well as the right to opt out of the sale of personal data and the processing of personal data for targeted advertising.
We do not sell your personal data. We do not process personal data for the purposes of targeted advertising or profiling. The TDPSA classifies your location data as sensitive personal data, and as described above, we use it only transiently and exclusively for weather data retrieval.
To exercise your rights, please contact us through the contact form. If you are not satisfied with our response, you may contact the Texas Attorney General.
If you are a California resident, the California Consumer Privacy Act (CCPA) and California Privacy Rights Act (CPRA) may provide you with additional rights regarding your personal information.
We do not sell or share your personal information as defined under the CCPA/CPRA. We do not use your personal information for cross-context behavioural advertising. You have the right to know what personal information we collect, request its deletion, and not be discriminated against for exercising your privacy rights.
To exercise your rights, please contact us through the contact form.
If you are located in the EEA or UK, we process your personal data in accordance with the General Data Protection Regulation (GDPR) and, where applicable, the UK GDPR and Data Protection Act 2018. The lawful bases for our processing are:
You have additional rights including data portability, the right to restrict processing, and the right to object to processing. If you are unsatisfied with how we handle your data, you have the right to lodge a complaint with your local data protection authority. For UK residents, this is the Information Commissioner's Office (ICO) at ico.org.uk.
We may update this privacy policy from time to time. We will revise the "last updated" date at the top of this page accordingly. We encourage you to review this policy periodically. Continued use of the app or website after changes constitutes acceptance of the updated policy.
Questions about this policy? Use the contact form on our homepage.