Comparison

中山七院 vs SmileDiary

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

Head to head
About

中山七院

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中山七院手机APP,可实现 手机预约、手机签到、消费记录、智能分诊、取报告单,健康百科、医院导航,我的诊疗记录

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
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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

中山七院1 screens
SmileDiary4 screens

Verdict

The call

The clearest difference is in-app purchases: 中山七院 at none against SmileDiary's 3. 中山七院 also leads on iOS requirement (9.0 vs 17.0). SmileDiary's advantage is device support. On price 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. SmileDiary sells 3 in-app purchases, starting at $2.99 per month. 中山七院 asks for nothing beyond the download.

Scorecard3 real differences · 4 level
中山七院 versus SmileDiary: the parameters behind the verdict, then further details
Parameter中山七院SmileDiary
PriceFreeFree
Update frequency—Every 5 days
Ads—No
In-app purchasesNo — betterYes
Monetization—Freemium
Devices—iPhone, Apple Watch — better
Requires iOS9.0 — better17.0
Further details — not scored
Size20 MB12 MB
Age rating17+4+
Developer温州医科大学附属第一医院Nanjing Xiaowei Technology Co., Ltd.

In-app purchases

None

中山七院

No in-app purchases

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$19.99

Questions

Is 中山七院 free?
中山七院 is free to download, with no in-app purchases.
Is SmileDiary free?
SmileDiary is free to download, with in-app purchases available.

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