TrayTime vs 22 Hours
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TrayTime
This app helps Invisalign users track their aligner wear time with a simple interface. It allows easy starting, stopping, and editing of timer events, with visual history to monitor progress towards daily goals. An Apple Watch app and complication offer convenient on-the-go tracking.
- Single-tap timer start/stop
- View 'Time On' and 'Time Off'
- Edit past timer events
- Visual history of usage trends
- Configurable daily goal
- Apple Watch app and complication
- Track current tray number
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TrayTime was designed by an Invisalign user, for Invisalign users. Refined over months of real-world usage, TrayTime makes using the app as streamlined and simple as possible. Start and stop the timer with a single tap. Easily view how long your trays have been on for—and off for! This makes it really easy to tell if you're on track to hit your daily goal. When you inevitably forget to start or stop the timer, TrayTime makes it simple to fix. You can easily add or edit past events. TrayTime tracks your full history, so you can visually monitor your usage trends, see which days you achieved your daily goal, and identify any areas for improvement. Show your history to your Orthodontist to put a smile on their face. TrayTime includes a streamlined Apple Watch app. Start and stop the timer directly from your wrist, and quickly check your daily usage. The included complication displays the timer state on your watch face, and allows fast access to the app. Designed specifically for the daily needs of Invisalign users, TrayTime makes it simple to record your tray usage and stay on track to achieve your perfect smile. APP FEATURES * Streamlined interface designed by an Invisalign user, for Invisalign users. * Large display shows your "Time On" and "Time Off". "Time Off" shows you how long your trays have been OFF for today, so you can quickly calculate if you're on track to hit your daily goal (or whether you have time for a snack). * Start/stop the timer with a single tap, or from the Apple Watch app, or from the iPhone's Quick Action shortcut menu. (Requires iPhone 6s or higher) * Records a full history of every event. History is easily editable if you forgot to start or stop the timer. * Visual history indicates which days you met your daily goal in a clear, easy-to-read format. * Configurable daily goal. Set to 22 hours per day by default, but configurable for your individual needs. * Manually add timer events if you removed your trays when your iPhone was out of reach. * Track which tray number you are currently on. APPLE WATCH FEATURES * Quickly view your "Time On" and "Time Off" directly on your wrist. * Easily start and stop the timer in the Apple Watch app. * Provides a watch face complication so you can quickly see if the timer is running, and rapidly launch the app. * App works even when your iPhone is out of range. Any timer events started/stopped will be synced back to your iPhone. IN-APP PURCHASE * Some features require a one-time in-app purchase. * A 7-day trial is available in the app, so you can try before you buy. * A single, one-time purchase unlocks the app on all your devices.
22 Hours
This app helps users track their clear aligner wear time accurately. It provides simple one-tap logging for aligner insertion and removal, offering insights into daily progress, streaks, and treatment history. The app also includes helpful reminders and progress photo capabilities.
- One-tap aligner wear logging
- Daily out-time budget visualization
- Streak tracking for goal achievement
- Detailed stats and treatment history
- Customizable reminders for aligner changes
- Progress photo capture and management
- Siri integration for hands-free logging
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22 Hours tracks your clear aligner wear from the first tray to the last, so you can stop guessing whether you hit today's goal. Built by someone who wore aligners too. One tap when your aligners go in. One tap when they come out. 22 Hours handles the rest. Free, with no ads. Unlimited photos, Siri and iCloud sync are included. Works with Invisalign, Spark, ClearCorrect and any other clear aligner. Where you stand, at a glance • Hours worn today, out-time left, and whether you are on track. Thinking in time left out is easier than counting hours worn. Streaks that actually mean something • Hit your daily goal and a streak builds. Miss it and it resets. Your current streak and your longest ever, always visible. Stats and history • A compliance ring for every day of treatment, plus weekly average, lifetime hours, a 14-day chart and your weekday pattern. Tap any day to see and edit its sessions. Reminders, not nagging • A heads-up when you go past your out-budget, never a guilt trip about a long lunch or an unexpected meeting. Switch-day routine • A reminder the night before each tray switch and a backup the next morning, optionally kept in sync with your iOS Calendar. Progress photos • Unlimited photos tagged to your aligner number, including ones you took before, saved to a 22 Hours album in your Photos library. Yours to keep even if you uninstall. Siri and Control Center • Say the word and your aligners are logged, in or out, without opening the app. Nothing to set up. Or add the switch to Control Center or the Action button. Set up in under a minute • Your treatment type, aligner count, switch schedule and daily goal. Already a few months in? Backfill from day one. Your data is yours • Synced privately across your devices via iCloud, exportable any time. 22 Hours Pro, if you want it Everything above is free, and stays free. Pro adds: • Apple Watch. Log put-in and take-out from your wrist, and add a complication to your watch face. • Live Activities and Widgets. Today's hours and your streak on your Home Screen, and a countdown on your Lock Screen while your aligners are out. • Key Insights. Your habits, your best and toughest days, and a projected finish date. • Key Events. Appointments and milestones on one timeline with your wear history. • Aligner Wear Report. A one-page PDF of your wear time to bring to your orthodontist, or the full record. • Morning Recap. Open the app in the morning and see how yesterday went. • Progress Photo Story. Any two aligners side by side, with everything that happened between them. • Auto Snap. It finds your teeth, waits until you are still, and takes the photo for you. • Full Screen Alarm. One out-of-aligners nudge that sounds like an alarm clock, for when a banner is easy to miss. iOS 26.1 or later. Your wear goal is personal. We will be with you on your journey to that great smile. Subscription details • 22 Hours Pro is available as a monthly or yearly subscription, or as a one-time lifetime purchase. • The yearly plan starts with a free trial for new subscribers. • Subscriptions renew automatically unless cancelled at least 24 hours before the current period ends. Manage or cancel in your App Store account settings. Privacy Policy: https://22hours.app/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: 22 Hours at none against TrayTime's 1. TrayTime's advantage is rating (4.1 vs 3.7) and ratings volume (40 vs 3). On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. TrayTime sells 1 one-off in-app purchase. 22 Hours asks for nothing beyond the download.
TrayTime holds the better App Store score, 4.1 against 3.7. That said, the two scores are not equally well evidenced: TrayTime has 40 ratings behind it against 3, so its average is the more settled of the two.
TrayTime ships an update every 5 weeks, 22 Hours monthly. The most recent releases landed on October 13, 2026 and October 12, 2026 respectively.
| Parameter | TrayTime | 22 Hours |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (40 ratings) — better | 3.7 (3 ratings) |
| Positive reviews | 70.6% of reviews | — |
| Number of ratings | 40 — better | 3 |
| Update frequency | Every 5 weeks | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, Apple Watch |
| Requires iOS | 10.3 — better | 17.0 |
| Further details — not scored | ||
| Size | 35 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Pocketglow LLC | Gazewing LLC |
Customer experience
TrayTime
22 Hours
In-app purchases
TrayTime
- TrayTime Full Version$1.99
22 Hours
No in-app purchases





