Privacy Policy for Nextech Systems Apps

Last updated: 7 September 2026

This privacy policy explains how the mobile applications published by Nextech Systems ("we", "us", "our") handle your information. It applies to every app we publish unless an individual app's store listing or in-app notice says otherwise.

For privacy questions, contact us at [email protected].

Summary

• We do not run our own servers and we do not collect personal data directly.
• Settings and progress for each of our apps are stored only on your device.
• Some apps display ads via Google AdMob, and some offer in-app purchases via Google Play Billing. Those services collect their own data, described below. In the EEA and the UK, an ad-supported app asks for your consent through Google's own form before it requests a single ad, and you can change that answer later from the app's Settings.
• Nothing you write in any of our apps is sent anywhere. No app of ours transmits your content, and none of them has a feature that does.

Data we collect

None directly. We operate no servers, and our apps do not transmit your settings, content, or usage to any server we control, or to anybody else's.

This has no exceptions. Until 1 September 2026 one app, Rursus, could send a single word to a translation service when you pressed a button; that feature has been removed from the app entirely and no successor to it exists.

Data collected by third parties

Google AdMob

Some of our apps display ads using Google AdMob. AdMob collects information including:

• Advertising ID
• IP address
• Device type, OS version, language
• Ad interactions (impressions, clicks)

This data is used to serve and measure ads, prevent fraud, and apply frequency capping. Google's handling of this data is governed by the Google Privacy Policy: https://policies.google.com/privacy

You can reset or limit your Advertising ID in your device settings (Settings → Google → Ads).

Consent in the EEA and the UK. Where the law requires it, our ad-supported apps ask you before any ad is requested. The question is put by Google's own consent form (Google's User Messaging Platform), not by us, and your answer is stored on your device by Google so that you are not asked again on every launch. Nothing is requested from AdMob until you have answered.

Your answer decides what may be collected. Consenting allows the personalised advertising described above; declining allows at most non-personalised ads, which still involve your IP address and basic device information but are not based on a profile of you. If no ad may be requested at all - because you declined everything, or because the question could not be put to you - the app requests none, and removes the ad space rather than leaving an empty one on screen.

You can change your answer at any time. In Rursus it is the "Ad privacy choices" row in Settings, and in Unmake it is the "ad privacy choices" line beneath the Broadcast panel; both reopen the same Google form. Outside the EEA and the UK the form does not appear, because the requirement does not apply there.

If an app offers a "Remove Ads" purchase and you complete it, AdMob is no longer initialised in that app and no further ad-related data is collected by us through it. There is nothing to consent to in that case, so no consent is collected either.

Google Play Games Services

Some of our games use Google Play Games Services for sign-in, cloud saves, achievements and leaderboards. Using it is optional; if you decline the sign-in, the game runs normally and everything stays on your device.

If you do sign in, Google provides the game with your Play Games player ID and display name, and Google collects and stores on your behalf:

• Your achievement progress and unlocks
• Your leaderboard scores
• Your saved game, if the game uses cloud saves

Saved games are stored by Google in the application data folder of your Google Drive. We have no server, so we never hold a copy - the save travels between your device and your own Google account. You can delete it at any time from Google Drive (Settings, then Manage apps) or by deleting the game's data in your Play Games profile.

Leaderboards are shared by design. If you submit a score, your Play Games display name and that score are visible to other players of the same game on that leaderboard. If you would rather not appear, do not sign in, or hide your Play Games profile in your Play Games account settings.

Google's handling of this data is governed by the Google Privacy Policy: https://policies.google.com/privacy

Google Play Billing

In-app purchases, where offered, are processed by Google Play Billing. Google handles the transaction, including your payment information; we only receive a confirmation that the purchase succeeded. See Google's payments policy for details.

Data stored on your device

Each app stores its own settings and progress locally using the Android system's preferences and file storage. Depending on the app, this may include saved sessions, statistics, custom preferences, sound or theme choices, and purchase status. None of it leaves your device unless you explicitly export or share it from within the app.

App-specific disclosures

Rursus (flashcards)

Rursus asks you about things you chose to remember, as a notification, at times you cannot predict. A card is two sides and an optional note, and what goes on them is entirely yours.

• Your cards. Both sides of every card, your notes, and how well you are doing on each are stored only on your device, in the app's private storage. We never receive them, and neither does anybody else - the app contains no code that sends them anywhere.
• Notifications. Rursus asks its questions in the notification shade, so it needs notification permission. Without it the app cannot function.
• Alarms. Rursus schedules a system alarm so a question can arrive at the right moment. If you allow exact alarms, questions arrive on time; if you do not, Android batches them and they may arrive late. Either way, nothing about the schedule leaves your device.
• Ads. Rursus displays ads via Google AdMob, described above. In the EEA and the UK you are asked to consent before any ad is requested, and Settings carries an "Ad privacy choices" row that reopens Google's form so you can change that answer.
• Backup. If you have Android backup enabled, your cards are included in your own device backup, held in your Google account under Google's terms. We have no access to it.

Acuity (launcher and focus tool)

Acuity is a home-screen launcher with focus features. It collects no data. It has no internet permission, no analytics, no accounts and no advertising.

• Accessibility service. If you enable it, Acuity uses Android's accessibility service solely to detect that an app section you blocked (for example Reels or Shorts) or a website you blocked is on screen, so it can show you the pause screen you configured. Screen content is examined on your device at the moment of the check and is never recorded, stored or transmitted. The service only receives information about the specific apps your own rules cover; with no such rules it receives nothing.
• Usage access. If you enable it, Acuity reads your device's app-usage statistics to show screen-time figures and enforce the limits you set. This information stays on your device.
• App list. As a launcher, Acuity lists the apps installed on your device in order to display and open them. The list is read locally and never leaves your device.
• Contacts. If you enable contact search in the app list, Acuity searches your contacts so you can open a person by name. Contacts are read on your device as you type, are never stored by Acuity and never leave your device. Leaving the feature off means the permission is never requested.
• Calendar. If you turn on the home-screen agenda, Acuity reads your upcoming calendar events to show the next few under the clock. Events are read on your device while the home screen is open, are never stored by Acuity and never leave your device. Leaving the agenda off means the permission is never requested.
• Your rules, messages and settings are stored only on your device and can be exported by you as a plain file that you keep.
• Purchases. Acuity offers a single one-time unlock via Google Play Billing (see above). There is no subscription.

Farthest South (polar expedition game)

Farthest South is a single-player game. It has no account of ours, no server of ours and no analytics. Your expedition, its history and your settings are stored on your device.

• Ads. The game shows ads through Google AdMob (see above), and offers optional rewarded videos you can choose to watch. Declining them costs you nothing that cannot also be earned by playing.
• Play Games Services. Achievements and leaderboards use Play Games (see above), including a leaderboard of how far south players have reached. Both are optional and the game is complete without signing in.
• Notifications. If you allow them, the game schedules reminders on your device - chiefly to tell you an expedition has finished. They are scheduled and delivered entirely by your phone; no message is sent from anywhere and nothing about you is transmitted in order to produce one. You can turn them off in the game or in Android's app settings.
• Randomised rewards. The game contains recovered depots, whose contents are randomised. Depots are found by playing and can also be funded with the in-game currency. The chance of each possible outcome is shown inside the game before you open or fund one.

Unmake (salvage game)

Unmake is a single-player game. It has no account of ours, no server of ours and no analytics. Your progress - the state of the ship you are dismantling and your upgrades - is stored on your device.

• Ads. The game shows ads through Google AdMob (see above): a banner, a native ad presented as one of the game's own panels and labelled as an ad, and optional rewarded videos - watching one grants the drone swarm a half-hour working shift, at most five times a day. Declining a rewarded video costs you nothing that cannot also be had by waiting.
• Purchases. Salvage Scrip can be bought through Google Play Billing (see above). Scrip buys working time, never outcomes: everything it accelerates also happens by simply waiting, and the game contains no paid randomised items.
• No permissions. Unmake requests no device permissions: no notifications, no location, and no access to anything outside its own app data.

Whittle (timers and to-do)

Whittle holds two kinds of thing: timers that are running, and tasks you have to do yourself. Both are made of words you typed, and both stay on your phone.

• Your timers and tasks. Their names, lengths, stages, reminder times, colours, the note about what to do next, and the record of what you have ticked off are stored only on your device, in the app's private storage. We never receive any of it, and neither does anybody else - the app contains no code that sends it anywhere.
• Notifications. A running timer appears as a live update on your lock screen and in the shade, and a task reminder arrives the same way, so the app needs notification permission. Without it, the thing the app exists to do cannot happen.
• Alarms. Whittle schedules a single system alarm so that a timer finishes, a stage changes and a reminder arrives at the right moment, even with the app closed. If you allow exact alarms these are punctual; if you do not, Android batches them and they may be late, and the app says so on its own settings screen rather than pretending otherwise. Either way, nothing about the schedule leaves your device.
• Internet access. Whittle has internet permission for one reason: the advertising SDK requires it. Nothing else in the app uses the network, there is no account, no sync and no analytics, and every feature works with the network switched off.
• Ads. Whittle shows a single advert at the bottom of the list, via Google AdMob as described above. In the EEA and the UK you are asked to consent before any ad is requested, and where Google requires it the Settings screen carries an "Ad privacy" row that reopens Google's form so you can change your answer.
• Purchase. Whittle offers a single one-time "Remove ads" unlock via Google Play Billing (see above). There is no subscription. Once it is bought the advertising SDK is never started at all, so nothing further is collected through it, and you are not asked for ad consent because there is nothing to consent to.
• Backup. If you have Android backup enabled, your timers and tasks are included in your own device backup, held in your Google account under Google's terms. We have no access to it.

How we keep your data secure

We take the security of user data seriously and apply the following practices:

• Data stays on your device. Because we operate no servers and collect no personal data ourselves, there is no central store of user data for us to hold, transfer, or expose.
• Protected local storage. Data our apps write is stored in the app's private storage area, isolated by the Android application sandbox so that other apps on the device cannot read it.
• Encryption in transit. All network communication our apps perform or embed - Google AdMob and Google Play Billing - takes place over encrypted HTTPS/TLS connections. Our apps make no unencrypted network requests.
• Minimal data handling. Our apps request only the permissions their features require and collect no personal or sensitive user data, which removes the need to transmit, process, or store it.
• Vetted third parties. The only third-party services our apps integrate are Google AdMob and Google Play Billing, which apply Google's own security and data-protection standards (https://policies.google.com/privacy).

Data retention and deletion

• Data on your device is kept for as long as the app is installed. You can delete all of it at any time by uninstalling the app, or by using Android's Settings → Apps → [app name] → Storage → Clear data. No copy is retained by us, because no copy is ever sent to us.
• Data collected by Google AdMob and Google Play Billing is retained and deleted according to Google's own policies. You can review and delete advertising data, or reset your Advertising ID, through your Google account and device settings.
• Correspondence. If you email us with a privacy question, we keep that email only as long as needed to answer you. To have it deleted, write to [email protected] and we will remove it.
• Deletion requests. To request deletion of any data you believe we hold, contact [email protected]. We will respond within 30 days.

Permissions

Each app requests only the permissions required for its features. The Play Store listing for each app discloses the full set of permissions it uses. Common permissions across our apps include:

• Notifications, for in-app alerts
• Internet access, to display ads via AdMob (only in apps that show ads)
• Billing, to process in-app purchases (only in apps that offer them)

Apps with specialised features may request additional permissions; these are disclosed in each app's store listing. We do not request location, microphone, contacts, calendar, SMS, or camera image access in any of our apps unless that app explicitly states otherwise in its store listing, and any such permission is used only for the disclosed feature.

Children

Our apps are not directed at children under 13. If you believe a child has used one of our apps in a way that requires action, contact us at [email protected].

Data sale

We do not sell personal information.

Changes to this policy

If we update this policy, we will change the "Last updated" date above. Material changes will be reflected in store release notes for the affected apps.

Contact

[email protected]