Comparison

Alinear vs Aligner Tracker

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

Head to head
About

Alinear

Features
Read full description

Alinear is a wear timer and tracker for clear aligners and retainers. Tap the bubble when your trays come out, tap again when they go back in, and see today's wear time at a glance. Use it with any clear aligner brand and the daily goal recommended by your orthodontist. WEAR TIMER • Start and stop wear sessions with one tap on iPhone or Apple Watch • Follow today's wear time and progress toward your daily goal • Get a put-back reminder after 20 minutes by default • Receive a reminder when today's goal is at risk • Add missed wear time and correct past sessions TREATMENT TRACKING • Follow your current aligner and upcoming change dates • Get reminders when it is time to change aligners • Browse past sessions and aligner changes in the calendar • Continue your treatment with refinement plans • Switch to all-day or nights-only retainer tracking after treatment STATISTICS AND STREAKS • See average wear time for the current aligner • Follow cycle health, goal days, and streaks PROGRESS PHOTOS — ALINEAR PREMIUM • Take photos with a smile guide and an overlay of your previous photo to help match the framing • Import photos from your photo library • Browse photos by month and see their treatment stage • Compare two photos with a slider or side by side • Share a comparison image • Sync photos through your private iCloud database MORE WITH ALINEAR PREMIUM • Lock Screen timer while your aligners are out, with Live Activity and Dynamic Island support • Home Screen and Lock Screen widgets • Apple Watch complications • Custom reminders, including the put-back time limit and quiet hours • Siri Shortcuts The core wear timer, session history, treatment tracking, statistics, retainer tracking, basic reminders, iCloud sync, JSON backup, and basic Apple Watch features are free. Premium is available as a monthly or yearly subscription, or a one-time Lifetime purchase. MADE FOR EVERY DAY Available in English and Japanese, with improved support for larger text sizes. PRIVATE BY DESIGN No Alinear account is required, and there are no ads. Your treatment records and photos stay on your devices and, when iCloud is available, in your private iCloud database. We use RevenueCat to manage purchases and basic app-usage analytics, and TelemetryDeck for privacy-focused usage analytics. Photos, treatment details, and wear-time records are not sent to these services. Export and restore treatment records as a JSON backup. Photos sync separately through iCloud and are not included in JSON backups. Alinear is not a medical device and does not provide medical advice, diagnosis, or treatment. Always follow the instructions of your orthodontist or dental professional. Privacy Policy: https://alinear.me/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Aligner Tracker

This clear aligner journal helps you track daily wear, tray changes, and appointments. It allows you to log aligner status, store progress photos, and view wear-time charts. Personalize your experience with themes and multiple languages.

Highlights
  • Log aligner in/out times
  • Track tray changes and appointments
  • Store and organize progress photos
  • View wear-time charts
  • Customizable themes and languages
  • Manual and iCloud backups
Read full description

AlignerDiary is your personal clear aligner journal, bringing daily wear, tray changes, orthodontic appointments and photos together. Redesigned navigation across five tabs makes recording and looking back feel more connected. No registration required. Log when your aligners are in or out Tap when you take them out or put them back in to view your recorded wear time. Add or correct missed entries, record how you feel and leave a note. Review each set of aligners Browse a calendar and daily timeline for each set, with wearing, removed and unknown periods shown separately. Enter the change dates and orthodontic appointments set by your dental professional, and add local reminders. Keep your everyday photos together Take photos or import several at once, organized by date and aligner set. Use the camera guide and 3-second countdown, then adjust the image after capture. Dates appear on thumbnails. Swipe left or right through photo details, or browse with the thumbnail strip. Compare multiple photos in stacked or tiled layouts: pinch to zoom them together, then pan them together while zoomed in. Photos are for personal review; the app does not assess treatment results. Look back with wear-time charts Choose a window of up to 7, 30 or 90 days, limited by your actual history. View daily recorded wear time alongside your goal curve. Recent summaries and per-set averages stop at yesterday; today is marked as in progress. Unknown time is not counted as zero. Make it feel like yours Choose from four color themes, with light and dark modes. The app supports ten interface languages, including Simplified and Traditional Chinese, English, Japanese and Arabic. Your records and photos stay on your device by default. Export a complete manual backup including photo files, or use a private iCloud backup in your own Apple account. iCloud backup requires an available account and network access. Backup is not two-way sync between devices. Optional, voluntary one-time tips are not subscriptions and do not unlock features. AlignerDiary is for personal records. It does not provide diagnosis or treatment advice, assess treatment outcomes or automatically change your treatment schedule. Follow the plan set by your dental professional.

Screenshots

Alinear4 screens
Aligner Tracker4 screens

Verdict

The call

The clearest difference is iOS requirement: Aligner Tracker at 16.4 against Alinear's 26.0. On price, update cadence, ads and in-app purchases 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. Alinear sells 3 in-app purchases, starting at $2.99 per month and Aligner Tracker sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Alinear ships an update every 3 days, Aligner Tracker every 4 days. The most recent releases landed on October 31, 2026 and November 1, 2026 respectively.

Scorecard1 real difference · 8 level
Alinear versus Aligner Tracker: the parameters behind the verdict, then further details
ParameterAlinearAligner Tracker
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 days — betterEvery 4 days
AdsNoNo
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS26.016.4 — better
Further details — not scored
Size33 MB42 MB
Age rating12+4+
DeveloperAnatolii Nehelia智寅 丁

In-app purchases

3 purchases

Alinear

Subscriptions2
  • Premium Monthly$2.991 Month
  • Premium Yearly$19.991 Year
One-time1
  • Premium Lifetime$29.99
4 purchases

Aligner Tracker

One-time4
  • 曲奇$0.99
  • 美式$1.99
  • 拿铁$2.99
Show 1 more
  • SOE$3.99

Questions

Is Alinear free?
Alinear is free to download, with in-app purchases available.
Is Aligner Tracker free?
Aligner Tracker is free to download, with in-app purchases available.
Do Alinear or Aligner Tracker have ads?
Neither Alinear nor Aligner Tracker shows ads.
Which is updated more often, Alinear or Aligner Tracker?
Alinear ships an update every 3 days, and Aligner Tracker every 4 days. Most recently, Alinear was updated on October 31, 2026 and Aligner Tracker on November 1, 2026.

Other comparisons