Make your progress check-ins easier to compare

Not sure what to include in a progress check-in? Learn how photos, measurements, and optional 3D scans can make your records easier to revisit.

A woman adjusts a smartphone mounted on a tripod inside a bright room, preparing to take a consistent fitness check-in photo.

A folder full of progress photos is easy to collect and surprisingly hard to review. Different angles, missing dates, and measurements saved somewhere else can leave you wondering which entries belong together.

Start by deciding what you want to compare. A useful check-in gives you a record you can return to, without requiring you to interpret every new photo as a result.

Choose a repeatable record

Pick a small set of things you want to keep: perhaps a photo, body weight, and a measurement you already follow. Write down when each entry was made. For photos, keeping the framing, lighting, and pose similar makes it easier to compare the images themselves.

Choose a schedule that fits your life. The aim is a record you can maintain, not a growing checklist you stop using. If you miss a check-in, continue with the next one rather than trying to reconstruct an entry from memory.

Give each measurement some context

A number is easier to revisit when you know where it came from. Keep the measurement method consistent where possible, and remember when you have changed it. A value you entered yourself and an estimate from a scan should not be treated as interchangeable simply because they share a label.

TandemFit lets you review available 3D scan measurement estimates before adding selected values to a check-in. This keeps you involved in what goes into your record. Scan access and available measurements can vary, and an estimate is not a medical assessment or a promise of tape-measure accuracy.

Decide whether you want measurements or a visual reference

The two scan options serve different purposes. Measurement uses guided camera capture, with a front view required and side or back views optional. You review the available estimates when the results are ready.

Avatar creates a visual 3D reference from one photo and supports photo-library import. It does not produce measurements. Choose it when a visual record is what you want, rather than expecting measurement data from every scan.

Review a few check-ins together

Bring up entries you can meaningfully compare and notice where the record is incomplete or the method changed. Keep any interpretation proportional to what you actually recorded. A photo and a measurement can help you describe a change; they do not, on their own, explain what caused it.

For your next check-in, choose the same small set of records you will want to see again. That is more useful than collecting every available number once.