SmileDiary - Aligner Tracker
SmileDiary - 微笑日记·隐形牙套正畸追踪
SmileDiary - Aligner Tracker is #64 in Medical Grossing in China and charting in 1 of 30 countries we track.
Updated 25 Oct 2026 · rankings refresh through the day
DeveloperNanjing Xiaowei Technology Co., Ltd.
CategoryMedical
PriceFree
Released
Rating★ 5.0 (9)
Version1.0.18
Age rating4+
First seen by us
30 Sep 2026
Installs (est.)500+ worldwide
Rating
5.0 ★
9 ratings
Measured
Best rank now
#64
Measured
SmileDiary - Aligner Tracker on the App Store
App details
App ID
6753011249
Publisher
Nanjing Xiaowei Technology Co., Ltd.
On the store since
Feb 2026
Under a year
Minimum OS
iOS 17.0+
iPhone XS and later
Devices
iPhone · iPad · Watch
Content rating
4+
Languages
2
EN ZH
Size
13 MB
Also listed in
Health & Fitness
SmileDiary - Aligner Tracker downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. iPhone downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| MedicalGrossing | #64 |
Apps near SmileDiary - Aligner Tracker on the chart
Medical Grossing, around #64.
Ratings
App Store, worldwide.
Rating
5.0 ★
9 ratings
Measured
Ratings
9
Measured
About SmileDiary - Aligner Tracker
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/
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/
Latest updates
1.0.18
This update focuses on bug fixes:
· Fixed the aligner switch confirmation on the Today tab sometimes not working.
· Fixed the last aligner in a Dual-Stage plan being unable to switch to Hard.
· Fixed changing aligners with Siri skipping the Hard stage in Dual-Stage plans (Pro).
· Fixed the Stock Depletion Reminder sometimes not arriving on its reminder day.
· Fixed reminders staying Time Sensitive after turning off "Enable Time-Sensitive Notifications".
· Fixed the default aligner and day count for older photos chosen from the album.
As always, your treatment data stays on your device. Questions or ideas? Reach us from Settings.
1.0.17
This update focuses on bug fixes:
· Fixed incorrect wear time on some Calendar days after off-time records were changed.
· Fixed adding an orthodontic plan changing the end date of completed plans.
· Fixed the Stock Depletion Reminder not following the date you actually switched aligners.
· Fixed Chinese text appearing when importing or exporting data in English.
· Added "Contact Us" in Settings.
As always, your treatment data stays on your device. Questions or ideas? Reach us from Settings.
1.0.14
本次更新以数据备份和提醒为主:
· 新增备份提醒,定期提醒你导出数据做备份。
· 修复导入数据失败后原有照片丢失的问题。
· 修复某些情况下收不到拍照提醒的问题。
· 修复在设置页导入数据后没有结果提示的问题。
· 修复取消恢复购买时提示失败的问题。
· 修复英文界面数量为 1 时单复数显示错误的问题。
一如既往,你的正畸数据只存在自己的设备上。有任何问题或建议,欢迎从设置页联系我们。