Pick photos directly or scan a period
Choose a specific batch from Apple Photos, or use shortcuts such as the last week, last month, previous month, or a custom date range.
A transparent matching workflow
Match by time. Inspect the evidence. Save by choice.
LensPin starts with camera photos already in Apple Photos. It compares each capture time with a continuous GPX track, nearby geotagged iPhone photos, or both—then presents a location suggestion you can verify.
The complete flow
One job, broken into safe checkpoints.
- Choose the trip and cameraSelect a date range, scan Apple Photos, and choose the imported camera batch.
- Add the evidence you haveUse geotagged iPhone photos, import a GPX file, or combine both.
- Align the camera clockIf the camera clock was fast, slow, or left in another time zone, apply an offset for matching. The original capture time is not changed.
- Review each suggestionSee the location source, map point, time gap, nearby anchors, GPX continuity, and any agreement or conflict between sources.
- Confirm and verifyLensPin changes only approved photos, then groups successful updates in an album you can check in Apple Photos.
Inside the app
Controls made for real photo libraries.
A trip may contain thousands of phone photos, several cameras, a wrong camera clock, or originals stored in iCloud. LensPin narrows the job before it starts matching.
Work with one exact camera
LensPin reads EXIF make and model, groups eligible photos, and excludes screenshots, unknown-camera images, and photos that already have a location.
Correct the comparison, not the photo
Apply a fixed camera-clock offset before filtering and matching. The original capture time and the time shown by Apple Photos are not rewritten.
Set how far the evidence may reach
A maximum anchor interval limits both GPX point spacing and the distance in time to nearby iPhone photos, so LensPin does not quietly widen the search.
How sources are used
A continuous GPX track first; iPhone photos when needed.
When both sources are available, LensPin prefers continuous track evidence. Nearby iPhone photos can confirm the same area, reveal a conflict, or fill a period without continuous GPX coverage.
Continuous GPX segment
LensPin interpolates by capture time only within the same valid track segment. It never crosses a recorded segment break or an implausible jump.
Geotagged iPhone photos
Only photos LensPin can identify as Apple iPhone photos become anchors. Before-and-after anchors are stronger when they are close in both time and place.
Results that say what they know
Reliable, review, or no suggestion.
The categories help you triage a batch. They are not claims of exact accuracy.
High confidence
Evidence is close in time and internally consistent. These suggestions are selected by default, but still wait for confirmation.
Review
The suggestion may rely on one-sided, sparse, distant, or partly conflicting evidence. Inspect the map and explanation before selecting it.
No suggestion
There is not enough safe evidence. LensPin shows track coverage or anchor gaps and leaves the photo unchanged.
A score is not a probability.
LensPin uses points to compare evidence and choose safe defaults. A 92-point example does not mean a 92% chance that the suggested coordinate is correct.
After you confirm
Save to Photos, then verify the result.
LensPin adds a Photos-library location only to the items you approve. It reads each asset again immediately before the change, so a photo that gained a location elsewhere is skipped instead of overwritten.
Add GPS to the current non-destructive Photos edit when the format supports it. The original photo or RAW remains recoverable.
Added, skipped, failed, album warnings, and EXIF fallbacks are reported as different outcomes.
Successful updates appear together, with a map and coordinates you can inspect again after the batch is complete.
Ready to review the trip?
Use the evidence you already have.
GPX and nearby iPhone photos lead to the same review-first workflow. For technical details, see location writeback and supported formats.