Privacy Policy

1. Who we are

PT Chart: Superheat Calculator ("the app") is developed and published on Google Play by VELOX APP LTD ("we", "us"), a company registered in England and Wales under company number 17186614, with its registered office at 128 City Road, London, EC1V 2NX, United Kingdom. We are the controller of the data described in section 4.

This policy covers the PT Chart: Superheat Calculator Android app only. Our company privacy policy covers this website and emails you send us. For any privacy question, or to use your rights, email [email protected].

2. Summary

• The app has no account or sign-in. The PT chart and the superheat and subcooling calculators work offline; the calculations happen on your phone.
• The app sends usage statistics and crash reports to Google Firebase (Analytics and Crashlytics) so we can fix problems and see which features are used. You can switch this off in Settings.
• The free version has an optional rewarded ad through Unity LevelPlay (ironSource Ads and Unity Ads): an ad is shown only if you tap “Watch an ad to unlock”, never automatically, and never before your first task. Ads use your device's advertising ID. In the EU/EEA, the UK and Switzerland the app does not currently show ads.
• Where ads are shown and the law requires it, we ask for your consent first (Google's consent form), and you can change your choice at any time in Settings > Privacy options.
• Pro is a one-time purchase that unlocks everything for good: no time windows and no ad to watch; with Pro the ad software is never started.
• Your settings, favourites and saved jobs stay on your device. We never receive them.

3. Data stored only on your device

The app stores your preferences (units, altitude, theme, last refrigerant), favourites, recent refrigerants, your privacy choices and any jobs or readings you save, in its private storage on your device. This data is not sent to us or to any third party. Uninstalling the app or clearing its data deletes it.

Backups. If you have Android backup switched on, Android may copy this data to your own Google account as part of your device backup. That copy is controlled by you and Google; we never receive it.

Reports. A PDF or CSV report is shared only when you tap Share, and goes only where you send it. We do not receive it.

4. Usage statistics and crash reports (Google Firebase)

The app uses Google Analytics for Firebase, Firebase Crashlytics and Firebase Remote Config, provided by Google. Google processes this data on our behalf, as our processor (Firebase privacy information). What is sent, why, and how long it is kept:

• App events: for example that a result was shown (with the refrigerant and the calculation type, never your readings, job names or notes), the Pro screen was opened, a purchase was started, completed or failed, an ad was shown or failed to load, a setting was changed. Used to see which features and refrigerants are used and to find broken flows. Kept 2 months (our Google Analytics retention setting).
• Automatic data: a random app-instance ID and Firebase installation ID, app version, device model, Android version, language, screen views and sessions, first open, and the country or region Google derives from your IP address (Google Analytics masks the IP address). Used to count users and sessions. Kept 2 months.
• In-app purchase events that Google Analytics logs by itself (product, price, currency; never card or payment details). Used to measure sales of Pro. Kept 2 months.
• Crash reports: stack trace, app state at the crash, device metadata, a Crashlytics installation ID. Used to find and fix crashes. Kept 90 days.
• Remote Config: an installation ID and app version when settings are fetched, to adjust without an app update the free-tier limits (how long and how often a rewarded unlock may be used) and the support contact details.

Firebase in this app does not collect the advertising ID, Google signals are off, and ad personalisation, ad user data and ad storage are switched off for Google Analytics. We never send your name, email, GPS location, photos, files, contacts, readings, job names or notes.

Your choice. Settings > "Share usage statistics and crash reports" switches Firebase Analytics and Crashlytics on or off at any time. In the EEA, the UK and Switzerland nothing is sent until you agree in the consent form (the "Store and/or access information on a device" choice); elsewhere it is on by default. Legal basis (UK/EU GDPR): your consent where the law requires it, otherwise our legitimate interest in keeping the app working and improving it.

5. Optional rewarded ads in the free version (Unity LevelPlay)

The free version offers an optional rewarded ad in exchange for a temporary unlock of Pro tools. In the EU/EEA, the UK and Switzerland the app does not currently show ads (a consent platform is pending), so none of the ad data below is collected there. Elsewhere we use Unity LevelPlay, a mediation service of Unity Technologies and its affiliate ironSource, which picks an ad from an ad network. Today the networks switched on are ironSource Ads and Unity Ads. The app also contains connectors (adapters) for AppLovin, Meta Audience Network, Mintegral, Pangle, Liftoff (Vungle), InMobi, Chartboost and Google AdMob; these receive data only if we switch them on in LevelPlay, and we will add any network we switch on to this list first.

Unity, ironSource and the ad networks act as independent controllers of the data they receive (this is "sharing" in Google Play's Data safety section). They receive and use, according to their own policies:

• the advertising ID of your device and identifiers set by the ad software (user IDs);
• device and network information (device model, Android version, language, network type, mobile carrier) and your IP address, from which an approximate location (country, region or city) is derived;
• ad interactions (ad requests, impressions, views, taps inside the ad) and app information (app name and version);
• diagnostics about the ad software (errors, load times);
• as Unity Ads declares, in-app purchase information.

Purposes: showing ads, limiting how often you see the same ad, measuring ads, preventing fraud, and, only where you allow it, personalised (interest-based) ads. Read Unity's Game Player and App User Privacy Policy (it also covers ironSource). Requests about data held by Unity or ironSource can be sent to them directly ([email protected]), or to us and we will pass them on.

When ads appear. Only after you tap the “Watch an ad to unlock” button (on the Jobs screen, in the Targets section or in Settings). Watching one ad unlocks targets, the job log and reports for 24 hours; the number of unlocks per day and per install is limited, after which only the one-time Pro purchase unlocks them. No banner ads and no full-screen ads are shown automatically, and nothing plays before your first task. Ads never appear between entering a pressure or temperature and seeing the result, on the first-run disclaimer, on the Pro sheet, or in the home-screen widget.

6. Your consent and privacy choices

• Where ads are served and consent is required: before any ad is requested, the app shows Google's consent form (Google User Messaging Platform, using the IAB Transparency & Consent Framework). If you do not consent, the app may show only non-personalised or limited ads, or none. If the consent form cannot be shown (for example when you are offline), no ad software is started.
• United States: where your state's privacy law gives you the right to opt out of the "sale" or "sharing" of personal information or of targeted advertising, use Settings > Privacy options in the app. Disclosing the advertising ID and ad interactions to ad networks for targeted ads may count as "sale" or "sharing" under those laws. We do not sell data for money.
• Change your choice any time: Settings > Privacy options (shown when it applies to you) reopens the consent form.
• Advertising ID: you can reset or delete it in your phone's settings (Settings > Privacy > Ads, or Google > Ads, depending on the phone). Ads may still appear but cannot be linked to the old ID.
• No ad to watch: buy Pro (one-time purchase), which unlocks everything permanently. The ad software is then never started.
• Statistics and crash reports: the switch described in section 4.

7. Purchases

PT Chart: Superheat Calculator is free, with an optional one-time Pro purchase. Payments are processed by Google Play. We receive only order information from Google (order ID, product, country and date) and never see your payment details (Google Privacy Policy). Refunds: request within 48 hours through your Google Play order history; afterwards email us and we refund if Pro does not work as described. Your statutory rights for faulty digital content are not affected.

8. Deleting your data

• On your phone: uninstall the app or clear its data.
• Analytics and crash data: deleted automatically after 2 months (analytics) and 90 days (crash reports). To delete it sooner, email [email protected] the "Analytics ID" shown in Settings > Privacy; we delete the data linked to it with Google's deletion tools within 30 days.
• Ad data: reset or delete your advertising ID (section 6) and contact Unity/ironSource as described in section 5, or ask us and we will forward your request.

9. Permissions

The app uses the internet and network-state permissions (ads, statistics, crash reports, settings), the advertising ID permission and Android's ad-services permissions (used by the ad software), and the Google Play billing permission (Pro). The included Google and ad libraries also add a few technical permissions (for example Wi-Fi state, wake lock and Play install referrer). The app does not ask for your location, contacts, photos, files, camera, microphone or phone calls.

10. Transfers outside the UK

Google, Unity, ironSource and the ad networks may process data in the United States, Israel and other countries. They rely on legal transfer safeguards such as the UK International Data Transfer Addendum and the EU Standard Contractual Clauses, or adequacy decisions.

11. Children

The app is a tool for professional technicians, is listed for adults (18+) and is not directed at children. The ad software is told the app is not child-directed. We do not knowingly collect data from children; if you believe a child has used the app, email us and we will delete what we can.

12. Support emails

If you email us, we keep your message and address only to answer you and delete them on request.

13. Your rights

Depending on where you live (UK and EU GDPR, US state privacy laws such as the California CCPA/CPRA, Canada's PIPEDA, the Australian Privacy Act, Mexico's LFPDPPP, India's DPDP Act), you may have the right to access, correct, delete or port your data, to object to or restrict processing, to withdraw consent, and to opt out of targeted advertising or the sale/sharing of personal information. Use the in-app choices in section 6 or email [email protected]; we reply within 30 days and will not treat you differently for using your rights. You may also complain to your data protection authority (in the UK, the Information Commissioner's Office).

14. Reference tool, not advice

PT Chart: Superheat Calculator is a reference tool for trained technicians. It does not replace manufacturer instructions, local codes or professional training. See the in-app disclaimer for the full text.

15. Changes to this policy

If the app's data handling changes (for example a new ad network), we update this page and its effective date before the new version is released, and say so in the app's Google Play listing.

16. Contact

VELOX APP LTD
128 City Road, London, EC1V 2NX, United Kingdom
Email: [email protected]