Sixteenth
Privacy Policy
This policy explains how the Sixteenth app for Android, iPhone and iPad ("the app") handles information. The app is published by Zenicraft, Hong Kong ("we", "us"). Questions: support@yobimi.com.
Information that stays on your phone
The following is stored only on your device. We never receive it:
- Calculations, the tape (history) and saved memories
- Jobs, including their names, items, material lists, prices, tax rates and notes
- Cut lists and tool inputs
- Your settings
PDFs and text you export are created on your phone and go only where you choose to share them, for example email or messaging apps. Those apps handle the data under their own policies.
Uninstalling the app or clearing its storage deletes this information. If you have device backup turned on, app data may be included in your own backup (Google backup on Android, iCloud on iPhone and iPad). That backup is controlled by your Google or Apple account, not by us.
Voice input
When you tap the microphone, the app asks for microphone permission (and, on iPhone and iPad, speech recognition permission) and uses your phone's speech recognition service (provided by Google on most Android phones and by Apple on iPhone and iPad) to turn speech into text. Depending on your phone, that service may process audio on the device or online under its provider's privacy policy. The app receives only the recognized text, uses it to fill in the calculation, and does not record, store or send audio or transcripts. Voice input is optional, and you can revoke microphone permission at any time in your phone's settings.
Usage statistics and crash reports
If Settings → Privacy → Share anonymous usage and crash reports is on (it is on by default), the app uses Google Firebase:
- Firebase Analytics records which screens and tools are opened and which features are used (for example "stairs tool opened", "job exported as PDF", "paywall shown"). It also records your app settings such as language and display format, plus device information such as model, OS version, app version, country and an app instance identifier.
- Firebase Crashlytics sends crash reports and unexpected errors: stack traces, device model, OS version, app version, free memory and an installation identifier.
These reports never contain your measurements, calculations, job names, notes, prices, or anything you type or say. Analytics does not collect the advertising ID and is not used for advertising or ad personalization. We use this information only to see which features are useful and to fix bugs.
Turning the switch off stops collection right away. See Firebase privacy and security for how Google processes this data on our behalf.
Ads (free version)
The free version shows an occasional full-screen ad from Google AdMob when you come back to the app. Ads are never shown to Sixteenth Pro owners.
To show ads, measure them and prevent fraud, the Google Mobile Ads SDK collects your device's advertising ID (on Android) or other device identifiers, your IP address, approximate location derived from it, device and app information, and how you interact with the ads. Google uses this as described in How Google uses information from sites or apps that use its services. The ad SDK never receives your measurements, jobs, prices or anything you type or say.
- EEA, UK and Switzerland: the app asks for your consent with Google's consent form before personalized ads are shown. You can change your choice at any time in Settings → Privacy → Ad privacy choices.
- Everywhere: you can limit ad personalization by deleting or resetting your advertising ID in your phone's settings (Android: Settings → Google → Ads). On iPhone and iPad the app does not ask for permission to track, so Apple's advertising identifier (IDFA) is not used.
The usage-statistics switch does not turn off ads.
Purchases (Sixteenth Pro)
Sixteenth Pro is an optional one-time purchase.
- Google Play (Android) or the Apple App Store (iPhone and iPad) handles payment. We never see your card or payment details. Google's or Apple's privacy policy applies to the payment.
- RevenueCat verifies purchases and remembers that you own Pro, so you can restore it on a new phone. RevenueCat receives a random anonymous user ID created by the app, your purchase details (product, price, currency, store order or transaction ID, and purchase token or receipt), device and app information such as model, OS version, app version, country and language, and your IP address as part of the network connection. See the RevenueCat privacy policy.
Purchase verification is needed for Pro to work, so it is not affected by the usage-statistics switch.
What we don't do
- No account or sign-in, and we don't ask for your name, email, phone number or contacts
- No location access
- No ads for Sixteenth Pro owners
- We don't sell or rent personal information
Service providers
| Provider | Purpose | Data |
|---|---|---|
| Google Firebase Analytics | Feature usage statistics | App interactions, settings, device info, app instance ID |
| Google Firebase Crashlytics | Crash and error reports | Crash logs, diagnostics, installation ID |
| Google AdMob | Showing and measuring ads in the free version | Advertising ID or other device IDs, IP address, device info, ad interactions |
| RevenueCat | Verifying and restoring Pro | Anonymous user ID, purchase history, device info |
| Google Play, Apple App Store | Payment | Handled by Google or Apple |
These providers process data on our behalf (Google may also use ad data as an independent controller under its own policy), may store it in the United States or other countries, and protect it in transit with encryption (HTTPS).
Retention
Data on your phone stays until you delete it or uninstall the app. Analytics and crash data are kept for limited periods set in Firebase, after which they are deleted. RevenueCat keeps purchase records while the purchase needs to be verifiable, and as required for accounting and tax purposes.
Your choices and rights
- Turn off usage statistics and crash reports in Settings → Privacy.
- Change ad consent (EEA, UK, Switzerland) in Settings → Privacy → Ad privacy choices, or reset your advertising ID in your phone's settings. Sixteenth Pro removes ads entirely.
- Revoke microphone or speech recognition permission in your phone's settings.
- Delete local data by clearing the app's storage or uninstalling.
- To ask about, get a copy of, or delete analytics or purchase records linked to your app, email support@yobimi.com. Because we don't know who you are, include your Google Play order number (it starts with "GPA.") or your App Store order ID, both shown in the purchase receipt email, so we can find your records.
Depending on where you live, for example California (CCPA/CPRA), the EU or UK (GDPR) or other US states, you may have rights to access, correct, delete or port personal information, and to opt out of its sale or sharing. We don't sell personal information. Personalized ads from Google AdMob may count as "sharing" for cross-context behavioral advertising under some US state laws; you can opt out by deleting your advertising ID in your phone's settings or by emailing us. We will not treat you differently for using your rights.
Children
Sixteenth is a tool for construction work and is not directed to children under 13. We do not knowingly collect personal information from children.
Changes
If this policy changes, we will update the date above and, for significant changes, mention them in the app's release notes.
Contact
Zenicraft, Hong Kong
support@yobimi.com