1. What stays on your device
Calculator equations, Tool inputs, calculation results, Tape entries, and notes are stored locally. Span64 does not upload this content to Irakai Studio or include it in analytics or crash reports.
2. Purchases
Apple processes iOS payments and Google Play processes Android payments for the Span64 Pro non-consumable purchase. RevenueCat helps Span64 verify and restore access using purchase history and a pseudonymous app user identifier. On Android, RevenueCat receives this randomly generated identifier when the app starts, independently of the optional telemetry setting. It is not linked to a Span64 account because Span64 has no account system.
3. Optional telemetry
Telemetry is off by default. Before the optional demo and your first calculation, Span64 asks whether you want to allow product analytics and crash diagnostics. Accepting is optional; declining lets you continue using the app. A choice you have already saved is preserved, and you can change it in Settings.
If you accept, Span64 may send a randomly generated installation identifier and limited product interaction events to PostHog EU for analytics. It may also send crash data to Sentry so Irakai Studio can diagnose app failures. These records are pseudonymous, rather than anonymous statistics. Activity before your acceptance is not collected or reconstructed later. Your choice does not control purchase verification or restoration through RevenueCat and the applicable store.
Optional telemetry never includes your measurements, equations, Tape entries, notes, calculation results, name, email address, or precise location. Span64 does not enable performance monitoring; optional telemetry is limited to the events and crash data described above.
4. Tracking and advertising
Span64 does not track you across apps or websites, serve advertising, sell personal data, or share data with data brokers. It does not use Apple's App Tracking Transparency permission.
5. Service providers
Span64 relies on Apple for App Store purchases, Google for Google Play purchases, RevenueCat for entitlement verification, PostHog EU for optional product analytics, Sentry for optional crash diagnostics, and OpenAI Sites to host this public website. Each provider processes only the limited information needed for those purposes. Their applicable contractual and data-processing terms require the same or equivalent protection described in this policy.
The web calculators on this site run entirely in your browser. The dimensions you type are not stored, not sent to Irakai Studio and not sent to any third party.
6. Retention and deletion
Local calculations and saved work are retained on your device until you delete them or remove Span64, subject to your platform's device and backup behavior. On Android, Tape entries are excluded from cloud backup but can transfer directly between devices. Purchase records are retained by the applicable store (Apple or Google Play) and RevenueCat while needed to verify the lifetime unlock, restore it, prevent fraud, and meet legal obligations. Optional analytics and crash information is retained only while needed to understand product use or diagnose failures, then deleted or anonymized.
Disable telemetry in Settings at any time to stop future optional collection and discard work still pending in the optional SDKs. Accepting again does not send that discarded activity. Disabling telemetry does not delete information already sent to providers. To request deletion of information within Irakai Studio's control, email roberto@irakai.com. We will delete data we can reasonably locate and instruct our processors to do the same, except where retention is required by law. Because optional telemetry is pseudonymous and contains no contact details, some events may not be attributable to a specific person. Apple controls records held under your Apple Account; Google controls records held under your Google Account.
7. Children
Span64 is a general-audience construction utility and is not directed to children. Irakai Studio does not knowingly collect personal information from children through Span64.
8. Changes and contact
We may update this policy when Span64 or its providers change. The effective date at the top identifies the current version. For privacy questions, email roberto@irakai.com.