Lean Projax · iOS

Privacy Policy

Last updated: April 22, 2026

Short version. Lean Projax is a standalone iOS app. Everything you create stays on your device. There are no accounts, no analytics, no tracking, and no servers we operate. The only network call the app can make is to OpenAI — and only when you explicitly enable the optional AI Assessment feature by entering your own OpenAI API key.

Who we are

Lean Projax for iOS is published by Pixdigital. If you have privacy questions or want to exercise a privacy right described in this document, please contact us at the email below.

What the app stores on your device

The app uses Apple's SwiftData framework to store DMAIC project data on your device's local storage:

Project title, objective, status, and timestamps
Charter fields (problem statement, business case, milestones, etc.)
Voice-of-Customer statements and CTQ requirements
Processes, SIPOC entries, Value Stream Map steps, Fishbone causes
FMEA rows and improvement recommendations

This data never leaves your device except through the optional features described below (AI Assessment). Deleting the app removes all of it permanently.

What the app does not do

We do not operate any server that receives your project data. There is no account system.
We do not use any analytics SDK (no Firebase, no Mixpanel, no Amplitude, no Segment, no custom telemetry).
We do not use advertising SDKs and do not show ads.
We do not track you across other apps or websites. The app does not request App Tracking Transparency permission because there is nothing to track.
We do not read your contacts, photos, location, health data, microphone, camera, or clipboard.

OpenAI integration (optional, opt-in)

The app includes an "AI Assessment" feature that asks a large language model to review your DMAIC project and return a written summary. This feature is disabled by default. To use it, you must:

Obtain your own OpenAI API key from platform.openai.com.
Paste it into Settings → OpenAI API Key inside the app.
Tap Run Analysis from an assignment's AI sheet.

When — and only when — you tap Run Analysis, the app sends the following directly from your device to api.openai.com/v1/chat/completions over HTTPS:

The project title, objective, and charter summary
Aggregated metrics for each process (Cpk, sigma level, efficiency)
The top-ranked FMEA failure modes
The list of recommendation titles and statuses

Your OpenAI API key is stored in the iOS Keychain using the kSecAttrAccessibleAfterFirstUnlockThisDeviceOnly access class, which means it is encrypted at rest, is not synced to iCloud Keychain, and is only available after you have unlocked the device at least once since boot. We never receive, log, or transmit your key ourselves — it is sent only to OpenAI in the Authorization header of the API request. You can remove the key at any time in Settings.

OpenAI processes the request under its own privacy policy: openai.com/policies/privacy-policy. Under OpenAI's current API terms, API-submitted content is not used to train OpenAI's models by default.

Third parties

The only third party the app can communicate with is OpenAI, L.L.C., and only under the circumstances described above. The app ships with no other third-party SDKs, no bundled libraries beyond Apple's own frameworks, and makes no other outbound network requests.

Children's privacy

Lean Projax is intended for professional users analysing business processes. We do not target children under 13 and do not knowingly collect personal information from them. The iOS age rating is 4+ because the app contains no objectionable content, not because it is aimed at children.

Your rights

Because the app stores your project data only on your device, you control it directly:

Access / portability: every piece of data you create is visible in the app itself.
Deletion: delete an individual assignment in the app, or uninstall Lean Projax to remove everything at once.
Correction: edit any entry directly in the app's UI.
API key: remove your OpenAI API key in Settings → OpenAI API Key → Remove at any time. Once removed, the AI Assessment feature is disabled.

Data retention

Data lives on your device for as long as the app is installed. Uninstalling the app deletes the local SwiftData store and removes your API key from the Keychain.

Security

The app is sandboxed by iOS. All network traffic is HTTPS only. The OpenAI API key is stored in the iOS Keychain. The app runs no background tasks and holds no always-on network connections.

Changes to this policy

If we make material changes to how the app handles data, we will update this page and bump the "Last updated" date at the top. Significant changes will also be noted in the app's release notes on TestFlight or the App Store.

Contact

Questions about this policy or about privacy in the app? Email nasser.khalid@me.com.