The short answer
2Lines is an iPhone app for examining visible lines in photographs of home pregnancy tests. This website provides free guides and links to the app; it does not offer a browser upload or diagnose pregnancy.
Sometimes you want information about faint lines. Sometimes you want a closer look at the test already in your hand. 2Lines is designed for that second task, with clear limits around what an image can tell you.
How the app fits into your next step
Use your test’s instructions first, including its timing and control checks. If a closer view of the photograph would still help, open 2Lines on iPhone and follow its capture or library-photo flow. The current App Store listing describes guided line-visibility review, filters and a history of checks. 2Lines: current App Store listing.
You can review what appears in the image without treating the app as a confirmation of pregnancy. A photo may be too unclear to offer a useful second look.
Before you download
- Device: this destination links to the iPhone app. It is not an Android APK or a fingerprint scanner.
- Price: the app is free to download and offers in-app purchases. Check the current local offer and terms before buying; free download does not mean every check or feature is free.
- Format: this site has no photo upload. Downloading the app is a separate step.
- Result: a visual review is not a medical diagnosis.
Privacy before photographs
Disclosure update: 27 September 2026. Read the 2Lines: published app privacy policy for local storage, analytics, online processing and deletion choices. It replaces earlier general statements that the app uses no analytics or never sends photographs off the device.
Production product analytics can include pseudonymous device identifiers, line-review labels and controlled onboarding answers. The policy separately explains Cloudflare/OpenAI photo processing and optional human review when those features are enabled. AI analysis and human review are not enabled for general production use as of this update. Their inclusion in the policy is not an announcement that they are available in your installed app.
Local-history deletion, server-data deletion and provider retention are different. Read the retention and deletion section before sending an image. Older App Store copy or an earlier linked policy can remain visible during the release transition; check the current in-app disclosures as well as the 2Lines: current App Store listing.
This journal does not accept test-image uploads. See website privacy for browsing and private-link handling, or photo metadata, access and uploads for general sharing checks.
Choose the guide that matches your question
If you are wondering about a pale mark, read faint lines. If the mark appeared later, read time limits. If your question is specifically about sending an image, read photo checkers and uploads.
No part of this flow assumes that you want a positive result. The aim is to make the visible evidence easier to review and the remaining uncertainty easier to recognize.
About this guide
Written by the 2Lines editorial team. Educational information, not individualized medical advice. This article has not been reviewed by a clinician. Product-specific statements link to the referenced manufacturer’s instructions; always check the leaflet supplied with your own test.
Published · Updated 27 September 2026. Sources, corrections and editorial policy.