Skin tracking · Android

Notice the things
worth noticing.

Track moles and skin changes with photos, measurements, and UV alerts. Learn what to watch for and compare over time. Freckle never sees your data.

Get it on Google Play
iOS · coming soon
Photo capture

Line up your shots.
Every single time.

When you take a follow-up photo, Freckle overlays the previous image at adjustable opacity so you can match the exact angle and distance. Consistent photos make real changes easier to spot.

  • Ghost overlay with adjustable opacity to match your angle
  • Tap-to-focus and pinch-to-zoom for close-up detail
  • Flash, front/back camera, and gallery picker
  • Place a reference coin for real-world size measurement
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Step 2
Reference object
Place something with a known size next to the spot in your photo.
Coins
US Dime
17.91 mm
US Penny
19.05 mm
US Nickel
21.21 mm
US Quarter
24.26 mm
Other
Custom object
Enter your own reference
Continue
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10¢
Pinch to zoom
Spot detail

Every photo. Every measurement.
One timeline.

Each tracked area holds a full history — a scrollable photo strip, size measurements against a reference coin, and a chart showing how each spot has changed over time. Log symptoms as they come up, replay the whole history as a timelapse, and keep notes, status tags, and reminders all in one place.

  • Scrollable photo strip with dates and ordinal count
  • Size chart tracks growth or stability at a glance
  • Log symptoms — itching, bleeding, crusting, tenderness, non-healing
  • Replay your photo history as a timelapse at up to 4× speed
  • Notes, status tags, and custom reminder intervals
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Step 1
Where is it?
Tap the area on the body.
Front
Back
Left upper arm
Continue
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● Worth watching 4 MO · 8 PHOTOS · 3 SPOTS
Upper left back
Chest · Monthly
128
Days
8
Photos
3
Spots
Spots · 3
Large mole 4.2 mm
Dark freckle 2.1 mm
New spot 1.8 mm
Home
Spots
Learn
Settings
Photo comparison

See what changed.
Three ways.

Pick any two photos of the same spot and compare them side by side, as an adjustable overlay, or with a swipe slider. Measurements are shown alongside so you can see how much a spot has grown or stayed the same.

  • Side-by-side comparison with dates and measurements
  • Overlay mode with adjustable opacity
  • Swipe slider to scrub between before and after
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Compare
Side by Side Overlay Slider
14 JAN 2026
22 MAY 2026
Before
3.9 mm
After
4.2 mm
+0.3 mm
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Compare
Side by Side Overlay Slider
50%
14 Jan 2026 22 May 2026
Before
3.9 mm
After
4.2 mm
+0.3 mm
UV & skin intelligence

Know your risk.
Not just your spots.

Real-time UV forecasting shows today's peak hours and recommends SPF for your skin type — and a daily alert gives you a heads-up when UV climbs. Build a skin profile with Fitzpatrick typing, risk factors, and any sun-sensitizing medications, and Freckle tailors your check-in cadence to match.

  • Live UV index with hourly forecast and peak hours
  • Daily UV alerts — a morning heads-up when UV is moderate or higher
  • Medication-aware: flag sun-sensitizing meds for extra warnings
  • Fitzpatrick typing and risk factors set your check-in cadence
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Today Self-Check Your Profile Reading
Today's Sun
6
High
UV index · peaks 12 PM
036811+
30+
SPF 30+ recommended for Type II skin. Reapply every 2 hours.
Hourly
9a10a11a12p1p2p3p
Home
Spots
Learn
Settings
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Today Self-Check Your Profile Reading
Based on your skin profile
2 factors identified
Fair skin (Type II)
Higher UV sensitivity and increased risk. Regular monitoring recommended.
History of sunburn
Childhood sunburns increase melanoma risk later in life.
SOURCE: AAD
Your Skin Type
Fitzpatrick scale
Type I · Always burns
Type II · Burns easily YOU
Type III · Sometimes burns
Type IV · Rarely burns
Home
Spots
Learn
Settings
Learn & self-check

Learn to read
your own skin.

Skin Check 101 is a five-minute guided lesson on what melanoma looks like — and it's always a tap away. Freckle teaches the methods clinicians use, in plain language, with cited sources. It helps you notice changes; it doesn't diagnose them.

  • Skin Check 101 — a guided, seven-step lesson on what to look for
  • ABCDE, EFG, the Ugly Duckling sign, and CUBED for hands, feet & nails
  • Context-aware tips — a CUBED reminder when you add a spot on palms or soles
  • A library of short, sourced articles, reordered to match your skin profile
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Today Self-Check Your Profile Reading
Skin Check 101
A five-minute lesson
Quick reference
The ABCDEs of melanoma
A
B
C
D
E
Asymmetry · Border · Color · Diameter · Evolving
EFG — what ABCDE can miss
Elevated · Firm · Growing
The Ugly Duckling sign
The mole that stands out
The CUBED rule
Hands, feet & nails
Home
Spots
Learn
Settings
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Back
Exit
Step 2 of 7
The ABCDEs of melanoma
A
Asymmetry — one half doesn't match the other.
B
Border — edges that are irregular or ragged.
C
Color — more than one shade in the spot.
Takeaway
Any one of these is worth a closer look — and a photo to track it.
Continue
Track & compare

See what changed.
Down to the millimeter.

Measure spots against a reference coin for real-world sizing. Compare any two photos side by side, as an overlay, or with a slider. Back up to Google Drive or export a PDF for your dermatologist.

  • Side-by-side, overlay, and slider comparison modes
  • Reference-object measurement with size tracking over time
  • One-tap PDF reports for your dermatologist
  • Google Drive backup, manual export, and automatic safety net
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Compare
Side by Side Overlay Slider
14 JAN 2026
22 MAY 2026
Before
3.9 mm
After
4.2 mm
+0.3 mm
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Skin Profile
Skin Type
Type II · Light
Google Drive
Automatic cloud backup to your Google account.
Backup Now
Restore from Drive
PDF Report
Generate a report for your dermatologist.
Export PDF Report
Reminders
Daily UV Forecast
6:00 AM
Home
Spots
Learn
Settings
Privacy by design

We never see your data.

Most apps in this category want your photos. Freckle doesn't. There's no Freckle server, no account, and no analytics watching what you do. Your data is yours — stored on your device and optionally backed up to your own Google Drive.

This is a deliberate choice — skin photography is personal. You should be the only one who has it.

Read the privacy policy
Available now

Start tracking today.

A small one-time purchase. No subscription, no recurring fees, no in-app purchases.

Get it on Google Play
iOS coming soon