Comparison

TrayMinder vs SmileDiary

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

TrayMinder

This app helps users stay on track with their clear aligner treatments. It provides tools for tracking wear time, setting reminders, and documenting progress with photos and notes. Advanced features are available through an optional subscription.

Highlights
  • Aligner wear time tracking
  • Smart reminders for tray insertion
  • Aligner change notifications
  • Progress photo documentation (Teethie)
  • Calendar for appointments and notes
  • Wear data sharing with orthodontist
Features
Currently charting
Read full description

Built by an orthodontist, TrayMinder® helps you stay on track with your clear aligners, like Invisalign®, ClearCorrect®, Angel Aligner®, and others, so you can get the best possible results from your treatment. Your treatment is an investment. Your wear time protects it. Staying consistent helps you stay on schedule and avoid unnecessary delays. TrayMinder® gives you the tools to stay on track every day. ⎯⎯⎯⎯⎯ TIMER • Start/pause timer to track daily aligner wear • Automatically adjusts for time zones and daylight saving — no mental math • Share wear data with your doctor via email or text • Set reminders to put your trays back in after meals CALENDAR • Get notified when it’s time to switch aligners • Add reminders for orthodontic appointments • Add daily notes (e.g., pain, rubber bands, etc.) • Visualize your progress with a color-coded calendar TEETHIE® (Teeth Selfie) • Snap a photo with each tray change to track progress • Import existing photos from your library • Scroll through and watch your smile transform • Create side-by-side comparison photos • Make time-lapse videos to visualize your full treatment journey TREATMENT & RETAINERS • Track your clear aligner treatment from start to finish • Start a refinement when your treatment plan changes • Continue using TrayMinder® with Retainer Mode after active treatment • Back up and restore your treatment data ⎯⎯⎯⎯⎯ TRAYMINDER FREE Everything you need to track your aligner wear. Supported by ads. TRAYMINDER+ The best TrayMinder experience. No ads. More tools. More ways to stay on track. TrayMinder+ includes: → No ads → Home Screen widgets → Siri voice commands & shortcuts → Unlimited Teethie photo storage → Live Activities on your Lock Screen and Dynamic Island → Apple Watch support to track wear time from your wrist → Calendar sync for aligner changes and appointments → Multi-device sync for your wear time, treatment plan, and photos Protect your smile investment and get the most out of your aligner treatment. ⎯⎯⎯⎯⎯ © 2026 TrayMinder LLC. All rights reserved. All product names, trademarks, and registered trademarks are the property of their respective owners. All company, product, and service names used in this app are for identification purposes only. End User License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://trayminder.com/privacy

About

SmileDiary

This app helps you track your clear aligner treatment privately and securely. It offers a smart wear timer, visual calendar, progress photos, and detailed insights into your compliance, all without collecting your personal data.

Highlights
  • Private data storage
  • No registration required
  • Smart wear timer
  • Visual compliance calendar
  • Guided progress photos
  • Detailed treatment insights
  • Data export functionality
Features
Read full description

SmileDiary: The Private, No-Nonsense Tracker for Your Aligner Journey Tired of apps that want your data more than they want to help you? Finally, an app that genuinely respects your privacy and actually gets what it’s like to wear aligners. Created by someone on their own Invisalign journey, SmileDiary is the simple, secure companion your orthodontic investment deserves. Why SmileDiary Stands Out: • Truly Private: Your treatment data never reaches our servers. It stays on your device, and with a Pro subscription it is also synced to your own iCloud account. We never sell your personal information — only anonymous crash reports and anonymous usage statistics help us fix bugs and improve the app. • No Ads, Ever: A clean, focused experience with zero third-party advertisements. • No Registration Needed: Start tracking immediately—no email, no account, no commitment. • You Own Your Data: Full export functionality keeps you in complete control. • Multiple Treatment Plans: Manage different courses of aligners seamlessly. Your All-in-One Aligner Companion • Smart Wear Timer: One-tap tracking for removal time, real-time daily progress, customizable goals, and automatic statistics. • Visual Calendar: A color-coded view of your compliance, with notes for pain, attachments, or observations. • Progress Photos: Guided shots for 6 angles, organized by aligner number, with side-by-side comparison and a built-in editor. • Smile Timeline: replay your teeth's transformation angle by angle — drag or play through your whole journey. • Detailed Insights: Interactive charts show daily, weekly, and monthly trends. Track compliance rate, total days, and longest streaks. SmileDiary Pro Unlocks More: • Timelapse Video Export — turn your progress photos into a shareable vertical MP4 with background music, dates and aligner numbers. • Live Activity on the Dynamic Island & Lock Screen — a live removal timer with one-tap put-back. • Siri & Shortcuts — say "Remove aligner in SmileDiary" to log hands-free, with a built-in card in the Shortcuts app. • Home & Lock Screen Widgets for at-a-glance progress. • Full Apple Watch App — track right from your wrist. • iCloud Sync — seamless flow across all your Apple devices. Our Promise: Your journey, your data, under your control. SmileDiary is built on a simple belief: the details of your smile should be for your eyes only. Like a digital diary, it’s designed to serve you—not to serve you ads or mine your habits. A Note from the Developer: “As an actual aligner wearer, I couldn’t find a tracker that was both simple and truly private. So I built SmileDiary—the app I use every day. It’s just me behind this, not a big company. If it helps you on your journey too, please consider leaving a review!” ⎯⎯⎯⎯⎯ Privacy Policy: https://smilediary.app/en/app/smilediary/privacy/ Terms of Use: https://smilediary.app/en/app/smilediary/terms/

Screenshots

TrayMinder4 screens
SmileDiary4 screens

Verdict

The call

The clearest difference is ads: SmileDiary at none against TrayMinder's shown. TrayMinder's advantage is update cadence (daily vs every 5 days) and chart position (#82 vs unranked). On price, in-app purchases, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. TrayMinder sells 5 in-app purchases, starting at $4.99 per month and SmileDiary sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

TrayMinder ships an update daily, SmileDiary every 5 days. The most recent releases landed on October 15, 2026 and October 5, 2026 respectively.

Scorecard3 real differences · 8 level
TrayMinder versus SmileDiary: the parameters behind the verdict, then further details
ParameterTrayMinderSmileDiary
PriceFreeFree
Rating4.7 (5.3K ratings) — better—
Positive reviews64.1% of reviews—
Number of ratings5.3K — better—
Update frequencyDaily — betterEvery 5 days
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
Best chart rank#82 — better—
DevicesiPhone, Apple WatchiPhone, Apple Watch
Requires iOS18.017.0 — better
Further details — not scored
Size167 MB12 MB
Age rating17+4+
DeveloperTrayMinder LLCNanjing Xiaowei Technology Co., Ltd.

Bugs and requests

TrayMinder

Reported bugs

3 issues
  • Photos not saving or uploading correctly
  • Timer issues and inaccurate tracking
  • Notification problems and duplicate reminders

Requested features

5 requests
  • Time zone adjustment for travelers
  • Parental controls or multi-user support
  • Countdown widget for home screen
  • Customizable color themes
  • Chewie reminder feature

SmileDiary

Not enough reviews yet to summarise bugs or requests.

In-app purchases

5 purchases

TrayMinder

Subscriptions2
  • TrayMinder+$4.991 Month
  • TrayMinder+14 Days trial$39.991 Year
One-time3
  • (Legacy) Remove Ads$1.99
  • (Legacy) Apple Watch Support$1.99
  • TrayMinder+ (Lifetime)$69.99
3 purchases

SmileDiary

Subscriptions2
  • SmileDiary Pro Monthly7 Days trial$2.991 Month
  • SmileDiary Pro Annual7 Days trial$12.991 Year
One-time1
  • SmileDiary Pro Lifetime$29.99

Questions

Is TrayMinder free?
TrayMinder is free to download, with in-app purchases available.
Is SmileDiary free?
SmileDiary is free to download, with in-app purchases available.
Do TrayMinder or SmileDiary have ads?
TrayMinder shows ads; SmileDiary does not.
Which is updated more often, TrayMinder or SmileDiary?
TrayMinder ships an update daily, and SmileDiary every 5 days. Most recently, TrayMinder was updated on October 15, 2026 and SmileDiary on October 5, 2026.

Other comparisons