miniFast
Effective date: November 4, 2026 · Leer en español
miniFast is an app for Android and iPhone, made by Oliva Devs, that works as an intermittent fasting timer. This page explains what data the app uses, what for, and what you can do with it. It is written in plain language on purpose.
Oliva Devs, run by Martín Furón, Argentina.
Contact: olivadevs@gmail.com
Short summary
The app stores the following in your phone’s private storage:
The language and the time format (12 or 24 hours) are read from your phone so the app displays properly. They are not stored separately or sent anywhere.
This data is not sent to any server of ours: we don’t have one. We can’t see it and we can’t recover it if you lose it.
On Android, if Google backup is turned on, the system may include miniFast’s data in the backup of your Google account and restore it when you switch phones or reinstall the app. Android does that under your settings and Google’s policy, and you control it in Settings > Google > Backup.
On iPhone, miniFast’s data may be included in the backup your iPhone makes to iCloud or to your computer. Apple makes and stores that backup under your iPhone settings and its policy, and you control it in Settings > your name > iCloud.
We receive neither backup and have no access to them.
From “About” you can export your history as a CSV file. The app builds the file in its own temporary folder and opens the system share sheet, Android’s or the iPhone’s: you choose where it is saved or who it is sent to (Drive, email, WhatsApp, AirDrop, “Save to Files”, etc.). We don’t receive any copy. What happens to the file afterwards depends on the app or service you choose and its policy.
To import, you pick a CSV file with the system file picker (Android or iPhone). The app reads only that file and does not ask for permission to access the rest of your storage or your files.
The widgets show your current fast using data that is already on your phone. They don’t send anything anywhere. On iPhone, the app gives its widget only the start time and the goal of the current fast, through a space shared inside the iPhone (an App Group) that only the app and its widget can access.
When you reach your goal, the app alerts you with a local notification, which your own phone schedules. It is not a push notification and it doesn’t go through any server. On Android, if you grant the exact alarm permission, the alert arrives right on time; if not, it may arrive a few minutes late. On iPhone that permission isn’t needed, but the notifications permission is, and the app asks for it the first time you start a fast. If you decline, the app works the same and shows a line saying the goal alert is off.
So you can rate the app, miniFast uses the store’s own feature for that: Google Play on Android and the App Store on iPhone. It may offer it after a few completed fasts, and you can also open it yourself from “About”. The store handles that request on your phone, and we don’t receive your rating or review this way. The share button opens the system share sheet with a short text and the app’s store link; you choose who gets it and we receive nothing.
The app shows a Google AdMob banner. It also offers an optional rewarded video: it is shown only if you tap for it, and if you watch it to the end the banner is removed for 48 hours.
To show ads, Google’s SDK may collect and use, according to what Google declares for its SDK: the device’s IP address (which can be used to estimate your general area), device identifiers, including the Android advertising ID (on iPhone, Apple’s advertising identifier is not used), how you interact with the ads and the app (for example, taps and video views), and diagnostic information. Google uses it for advertising, analytics and fraud prevention. Google processes that data under its own privacy policy: https://policies.google.com/privacy. How Google uses information from apps that use its services: https://policies.google.com/technologies/partner-sites.
On Android, you can limit the use of the advertising ID or delete it from the system settings (usually Settings > Google > Ads). You can also turn off ad personalization in your Google account’s ad settings.
iPhone. On iPhone the app does not ask for tracking permission: Apple’s prompt does not appear, your iPhone’s advertising identifier is not used, and ads are always requested unpersonalized. Where the law requires it, Google’s consent message appears before the ads. Your fasts never leave the phone.
Consent message. If you are in the European Economic Area, the United Kingdom or Switzerland, the app shows Google’s consent message (on Android and iPhone) before showing ads, where you choose what you accept. Depending on what you choose, Google may show you personalized, non-personalized or limited ads; the app only requests ads when Google’s message allows it. Where the law requires it, the app shows a “Privacy options” button so you can change your choice at any time. On iPhone, ads are always non-personalized.
“No ads” purchase. If you buy it, the app stops asking for consent, stops starting AdMob and stops loading ads.
“No ads” is a one-time purchase made through your phone’s store: Google Play on Android and the App Store on iPhone. The payment, your card details and your purchase history are processed by the store (Google or Apple), not by us. The app only checks with the store whether your account has that purchase, to remove the ads or, with “Restore purchase”, to recover it on another phone or after reinstalling. The app is also distributed through Google Play and the App Store, which may process their own data about the download and installation under their policies.
Google Privacy Policy: https://policies.google.com/privacy. Google Play Terms of Service: https://play.google.com/about/play-terms/. Apple Privacy Policy: https://www.apple.com/legal/privacy/.
The app includes no usage analytics, tracking or social network tools, and we don’t sell or share your data with anyone else.
The Google libraries included in the app may add other technical permissions needed to operate.
The app does not ask for access to your location, contacts, camera, microphone or the rest of your storage, and on iPhone it doesn’t ask for your photos either.
There are none. There is no way to sign in to miniFast.
miniFast is not directed to children under 13 (or under the minimum age set by the law of your country for using services with ads) and we do not knowingly collect data from children. If you believe a child has used the app, write to us and we will help delete whatever is within our reach.
Since we don’t hold your data, there is nothing for us to access, correct or delete on our side. If you have any question or want to exercise a right, write to us at olivadevs@gmail.com and we will reply within a reasonable time. This policy is governed by Argentine law. The Agency for Access to Public Information (Agencia de Acceso a la Información Pública) is the supervisory authority under Argentina’s Personal Data Protection Law 25,326 and handles complaints from people who believe their rights have been affected: https://www.argentina.gob.ar/aaip.
miniFast is a timer. It is not a medical service, it does not give diagnoses or advice, and it does not replace consulting a health professional. If you have questions about fasting, consult a professional.
If we change it, we will publish the new version on this same page with its effective date. We recommend checking it from time to time.