Tray Day vs Aligner Diary
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Tray Day
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TrayDay makes it easy to stay on track with your aligner treatment. No more wondering which tray youβre on or when to switch. Enter your schedule once, and TrayDay keeps everything updated automatically β including a handy Home Screen widget so your progress is always visible. With TrayDay you can: β’ Track your current tray and next change β’ See your treatment progress at a glance β’ Get a simple countdown to your next tray β’ Keep your smile journey organized Simple. Clear. Reliable. Just open, check, and keep moving forward. TrayDay is free to use. Optional tips are available to support development.
Aligner Diary
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Aligner Diary is a private personal tracker designed to make clear-aligner routines easier to follow and treatment progress easier to review. WEAR TIME AT A GLANCE Record when your aligners go in or come out. The app totals todayβs wear and time-out periods and shows how much time remains within your daily goal. CLEAR TRAY-CYCLE PLANNING Set your current tray, total number of trays and change interval. See your current stage, goal streak and next planned tray change from the Today and Progress screens. PHOTO PROGRESS JOURNAL Add teeth photos from the camera or photo library and revisit them by date, so small changes are easier to notice over time. CHECK-INS AND TRENDS Log soreness, fit, attachment concerns, aligner damage, sharp edges and gum bleeding. Trend views help you organize recent observations and decide what to discuss with your dentist or orthodontist. CALENDAR AND EDITABLE HISTORY Use the calendar to review daily wear, photos and check-ins. Edit or delete entries whenever something was recorded incorrectly. REMINDERS, THEMES AND TWO LANGUAGES Use optional wear and tray-change reminders, choose from multiple interface themes, and switch between Simplified Chinese and English. ALIGNER DIARY PRO Optional Pro access adds dentist-ready PDFs, shareable photo comparison cards, advanced reminders and a device privacy lock. Choose monthly, annual or lifetime access and restore eligible Apple purchases. ACCOUNT, PRIVACY AND LOCAL DATA Core aligner records and teeth photos stay on your device. No registration is required to buy or restore Pro through Apple. An optional account can sync membership entitlement; any account can be permanently deleted in the app. Export, preview and restore local backups at any time. Aligner Diary is for personal tracking only. It does not provide medical diagnosis, treatment advice or emergency services. Contact a dentist or orthodontist about persistent pain, damaged aligners, poor fit or other health concerns. Terms of Use: https://alignerdiary.com/terms Privacy Policy: https://alignerdiary.com/privacy Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is device support: Aligner Diary at 3 against Tray Day's 1. Aligner Diary also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Tray Day sells 3 one-off in-app purchases and Aligner Diary sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
Tray Day ships an update every 5 days, Aligner Diary weekly. The most recent releases landed on October 1, 2026 and October 5, 2026 respectively.
| Parameter | Tray Day | Aligner Diary |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days β better | Weekly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone, iPad, iPod β better |
| Requires iOS | 18.0 | 15.0 β better |
| Further details β not scored | ||
| Size | 5 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | Mark Remi | ζδ½³ ζ |
In-app purchases
Tray Day
- Small Coffee$2.00
- Large Coffee$5.00
- Coffee & Pastry$10.00
Aligner Diary
- Pro Monthly$0.991 Month
- Pro Annual$3.991 Year
- Pro Lifetime$7.99







