Trace: Acne & Skin Tracker
What is Trace?
Scans your face daily with your iPhone camera and tracks four skin scores (acne, redness, pores, spots) as trends over.
Trace turns a daily selfie into four scores from 0 to 100, where higher means calmer and clearer. It shows a trend line for each score, a daily note from its in-app buddy, and a report at the end of each test. The listing says scores are measured on the iPhone and are not a medical assessment.
Pricing. Trace is free, with no in-app purchases on the App Store.
Good for
- Checking whether one skincare product change shows up over several weeks
- Logging sleep, diet, stress, travel, or period alongside skin trends
- Keeping a daily skin photo record without guessing from the mirror
Screenshots
Why this app is in A tier
A tier follows from that score within this list. The full explanation, as data.
Trace scores 87 out of 100: rating 100, rating count 51, App Store search rank 97, update recency 100. The four parts are averaged and A tier follows from that score within this list.
Description
See if your skincare is actually doing anything.
Trace turns a daily selfie into four simple numbers, so you can watch your skin over weeks instead of guessing in the mirror every morning.
HOW IT WORKS
- Scan your face. It takes about two seconds.
- Keep your routine steady and change one thing at a time.
- Watch the line. Weeks tell you what a single day never can.
WHAT YOU SEE
Four scores, each 0 to 100, where higher always means calmer and clearer:
Acne, Redness, Pores, Spots.
Plus a trend line for each, a daily note from your Trace buddy, and a report at the end of every test.
ONE THING AT A TIME
Read more
Change three products at once and your skin improves, and you have learned nothing. Trace is built around changing one variable while everything else holds still. It is slower. It is also the only honest way to find out what worked on your face.
YOUR SCAN RUNS ON YOUR PHONE
Your four skin scores are measured on your iPhone, so scanning never sends your photo anywhere. Photos sync only to your own private account. Optional AI features, like product recommendations, send a photo only when you choose to use them.
TALK TO IT LIKE A DIARY
Tell Trace what you ate, how you slept, whether you were stressed, travelling, or on your period. It lines all of that up against your skin trend, so you can tell a product effect from ordinary life noise.
WHY WEEKS, NOT DAYS
Adult skin renews itself over roughly 28 days, and most active ingredients need four to six weeks before anything real shows up. One day of wiggle means almost nothing. The line means a lot.
WHAT TRACE IS NOT
Trace measures, it does not diagnose. The scores describe what the camera saw in this light, on this day. They are not a medical assessment. If something about your skin worries you, please see a dermatologist.
FREQUENTLY ASKED
Q: Does scanning upload my face to an AI server?
A: No. Your four scores are measured on your iPhone. Photos sync to your own private account. Optional AI features send a photo only when you choose to use them.
Q: How soon will I see something?
A: Give it a few weeks. Day to day movement is normal and expected. The trend is the part worth reading.
Q: Can I test more than one product at a time?
A: You can, but then you will not know which one did it.
Q: What if I miss a day?
A: Nothing breaks. Come back and keep going. The line survives gaps better than you would think.
SUPPORT
Questions, bugs, or feedback: support@traceshq.com
Compare
Trace
AcneTrack
Scout
Puffin
NomaTop Acne Tracking
Recently Updated
Questions about Trace
Does scanning upload my face to an AI server?
No. The four scores are measured on your iPhone and photos sync only to your own private account. Optional AI features send a photo only when you choose to use them.
How soon will I see something?
The listing recommends giving it a few weeks, since adult skin renews over roughly 28 days and most active ingredients need four to six weeks. Day to day movement is described as normal.
Can Trace diagnose skin conditions?
No. The listing says Trace measures and does not diagnose. The scores describe what the camera saw in that light on that day, and it recommends seeing a dermatologist about any worries.
Is Trace free?
Yes. Trace is free on the App Store, with no in-app purchases.
Is Trace right for me?
Trace is built for checking whether one skincare product change shows up over several weeks, logging sleep, diet, stress, travel, or period alongside skin trends, keeping a daily skin photo record without guessing from the mirror. It sits in the acne tracking list on AppTierList.
Is Trace worth it?
Trace is A tier, ranked #2 of 11 acne tracking apps with a score of 87 out of 100, from a 5.0 App Store rating across 13 ratings. It is in the list's top tiers; 1 app ranks above it.
How does Trace compare to AcneTrack?
Trace is A tier at 87; AcneTrack is S tier at 92. AcneTrack ranks higher. Trace is free, with no in-app purchases, AcneTrack is free to download, with in-app purchases.
How often is Trace updated?
Trace was updated 7 days ago, which counts in its favour.
Alternatives
Top rated in Acne Tracking
Categories
All the facts
Ranking
- Lists
- Acne Tracking (A tier, #2) · Skin Tracking (A tier, #3) · Skin Analysis (B tier, #8)
- Tier
- A (Excellent)
- Score
- 87 / 100
- Rank in list
- #2 of 11
- Ranking certainty
- settled
Ratings
- App Store rating
- 5.0 out of 5, every App Store country
- Ratings
- 13
App
- Price
- Free download
- App Store category
- Health & Fitness
- Current version
- (7 days ago)
- Size
- 133 MB
- Requires
- iOS 17.0 or later
- Age rating
- 12+
- Languages
- 5
- Runs on
- iPhone
Links
- Developer pages
- Support · Privacy policy
- Maker
- not verified
- As data
- JSON · why it ranks here
App Store data read · ranking