Comparison

STUDIO 20 CpH vs Aligner Diary

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

Head to head
About

STUDIO 20 CpH

Features
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STUDIO 20, is your commercial dance studio and community. We have high-level classes & training facilities available for you. The studio is for: Professional dancers already working in the industry, The dancer who aspires to enter the industry or for the dancer who wishes to improve and elevate their art. If you haven’t danced before, we also have beginner’s classes, to get you started on your dancing in an open and inclusive environment. We have an amazing team of 19 dancers inviting you to dance in each their individual style and level. They will all share their passion, drive & knowledge with you. At the studio, you will also have the pleasure of both national and international guest dancers. STUDIO20’s concept is built on commercial dance mostly experienced in L.A. US, where dancers are considered not only artists but athletes as well. We focus on strength, technique, musicality, quality, knowledge, execution, performance, and the actual process of developing your dance. One of our most important values is working towards better rights and conditions for dancers. By being at STUDIO20 this means you will have the possibility of being discovered, get signed, and receive representation. At S20 AGENCY we book, manage, guide, and fight for the dancer to help them get a long and prosperous career in the industry. Sincerely, STUDIO 20 TEAM

About

Aligner Diary

Features
Read full description

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 today’s 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

STUDIO 20 CpH3 screens
Aligner Diary4 screens

Verdict

The call

The clearest difference is in-app purchases: STUDIO 20 CpH at none against Aligner Diary's 3. STUDIO 20 CpH also leads on iOS requirement (13.0 vs 15.0). Aligner Diary's advantage is update cadence (weekly vs every 3 weeks). On price, ads 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. Aligner Diary sells 3 in-app purchases, starting at $0.99 per month. STUDIO 20 CpH asks for nothing beyond the download.

UpkeepUpdate frequency

STUDIO 20 CpH ships an update every 3 weeks, Aligner Diary weekly. The most recent releases landed on October 3, 2026 and October 5, 2026 respectively.

Scorecard3 real differences · 3 level
STUDIO 20 CpH versus Aligner Diary: the parameters behind the verdict, then further details
ParameterSTUDIO 20 CpHAligner Diary
PriceFreeFree
Update frequencyEvery 3 weeksWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.0 — better15.0
Further details — not scored
Size38 MB47 MB
Age rating4+4+
DeveloperYOGO.DK ApS思佳 李

In-app purchases

None

STUDIO 20 CpH

No in-app purchases

3 purchases

Aligner Diary

Subscriptions2
  • Pro Monthly$0.991 Month
  • Pro Annual$3.991 Year
One-time1
  • Pro Lifetime$7.99

Questions

Is STUDIO 20 CpH free?
STUDIO 20 CpH is free to download, with no in-app purchases.
Is Aligner Diary free?
Aligner Diary is free to download, with in-app purchases available.
Do STUDIO 20 CpH or Aligner Diary have ads?
Neither STUDIO 20 CpH nor Aligner Diary shows ads.
Which is updated more often, STUDIO 20 CpH or Aligner Diary?
STUDIO 20 CpH ships an update every 3 weeks, and Aligner Diary weekly. Most recently, STUDIO 20 CpH was updated on October 3, 2026 and Aligner Diary on October 5, 2026.

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