TrayceThe 22-hour rule: how long you really need to wear clear aligners each day
Where the number comes from, why it is 22 and not 18, and what it means as a daily budget you can actually plan around.
iPhone · free · no account
Wear-time tracking that never loses count
Trayce tells you how much longer you can have your clear aligners out today and still hit your goal. It works entirely offline, shows no ads, and counts from saved times — so quitting the app or restarting your phone cannot lose a second.
Works with Invisalign®, ClearCorrect®, SureSmile®, Angel Aligner® and any other clear aligner or retainer. Trayce is not affiliated with any of them.
Built by reading the one-star reviews
Trayce started as a spreadsheet of complaints. We read several thousand reviews of every aligner tracker on the App Store — the angry ones and the happy ones — and built the app that answers them. Every row below is a real, repeated complaint about an existing app.
“The timer reset and I lost my whole day.”
Most trackers run a stopwatch. Close the app, restart the phone or run the battery flat and the count is gone.
Trayce never runs a timer. It saves the time you tapped and does the arithmetic later, so there is nothing that can be interrupted.
“It says I had them out for four hours overnight.”
Apps that add 24 hours to yesterday break on daylight saving and on flights.
Trayce asks the calendar where each day starts, so a 23-hour spring day and a 25-hour autumn day both measure honestly.
“I forgot to tap and now my log is wrong forever.”
A record you cannot correct is a record you stop trusting, and then stop keeping.
Add, edit or delete any period out — today, yesterday or three weeks ago. Nothing in your history is locked.
“An ad covers the screen I opened the app for.”
The single most common complaint in the category, and it is getting worse.
No ads. Not in the free version, not in Pro, not ever.
“They put a feature I already paid for behind a subscription.”
The second most common, and the one people stay angry about.
Nothing that is free in Trayce today will ever move behind the paywall. Your full history exports to CSV for free, permanently.
“I had to make an account to time my own teeth.”
Sign-ins fail, servers go down, and data you did not want to share leaves your phone.
No account, no server, no network request of any kind. Trayce works in airplane mode because it always works that way.
Watch what happens when you kill the app
The most common complaint about every other aligner tracker is a timer that lost the day. Trayce has no timer to lose. Fourteen seconds, no sound needed.
The number that actually matters
Other apps show hours worn so far — a number that is useless at nine in the morning, when it always reads like failure. Trayce leads with the out-time budget. A 22-hour goal means two hours out per day, and Trayce counts down what is left of it. That is the number you plan lunch around.
One screen, one decision
How long you can still be out, what today is on track to total, and how many days in a row you have hit goal. One tap takes them out, one puts them back.
A record you can show your orthodontist
Every day, kept forever, with your average, your days at goal and your compliance percentage. Export the lot to CSV for free, or a PDF report with Pro.
Your plan, not the app's guess
Any number of days per tray, any daily goal, and you can change tray early or late when your orthodontist says so. Trayce follows; it does not argue.
Fix the tap you forgot
Every entry on every day is editable. Reminders nudge you to put them back in and stop the moment you do, instead of nagging on after you have already complied.
Free, and Pro
The line is deliberate: you never pay to see, keep or take away your own wear record. Pro is for the extras around it.
Free, forever
No ads, no account, no trial timer
- Wear tracking and the out-time budget
- Every reminder — put-back, tray change, end of day
- The full tray schedule and change dates
- Editing any entry on any past day
- Unlimited history, never trimmed
- CSV export of every day and every entry
- Retainer mode with its own defaults
Trayce Pro
One-time purchase or yearly
- Progress photos with side-by-side compare
- A PDF wear report for your orthodontist
- Track more than one person
- Alternate app icons
Nothing that is free today will ever move behind the paywall.
Treatment ends. Retainers don't.
Most trackers are built for a 22-hour aligner day and handle retention badly or not at all. In Trayce, a retainer is its own mode with its own default goal, so the log you started on tray one keeps going for as long as you are wearing something — which, for a retainer, is likely to be years.
Questions
Does Trayce keep counting if I close the app?
Yes. Trayce does not run a timer. When you tap that your aligners are out, it saves the time, and works out the total whenever you next open the app. Force-quitting, restarting your phone or running the battery flat has no effect on the count.
Do I need an account or an internet connection?
No. Trayce has no account and makes no network requests at all. Your log lives on your iPhone. There is nothing to be logged out of and no server that can go down.
What if I forget to tap?
Add, edit or delete any period out, on any day, including weeks in the past. Nothing is locked, so one missed tap never permanently corrupts your record.
Does it work with retainers as well as aligners?
Yes. Retainer is a first-class mode with its own default goal, because most retainers are worn overnight rather than 22 hours a day.
Is Trayce free?
Yes. Tracking, the out-time budget, all reminders, the tray schedule, retroactive editing, unlimited history and CSV export are free forever. Pro adds progress photos, a PDF report, multiple people and alternate icons.
Does Trayce show ads?
No, in neither tier. No banners, no interstitials, nothing on the tracking screen.
Will my data sync to my other devices?
Not currently. Trayce is deliberately local-only, which is what makes it work offline and without an account. Your full history exports to CSV at any time, for free.
Is Trayce made by Invisalign?
No. Trayce is independent and is not affiliated with, endorsed by or connected to Align Technology or any other aligner manufacturer. It works with any brand of clear aligner or retainer because it tracks time, not a particular product.
From the blog
Plain-English guides to wearing aligners and retainers — what the rules are, why they exist, and what actually happens when you miss them.
What actually happens if you don't wear your aligners enough
Tracking lag, aligners that stop seating, refinements, and why the consequence always arrives months after the cause.
How to track aligner wear time: five methods compared
Memory, paper, phone timers, smart cases and tracking apps — what each one costs you and where each one fails.
Know your number, not your guess
Free on the App Store. No account, no ads, and nothing to lose if your phone dies.
Download Trayce