Comparison

Ortho Calculator vs AlignerTime

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

Head to head
About

Ortho Calculator

This app provides advanced mathematical tools for orthodontic treatment planning. It offers various calculators to assist dental professionals in making informed decisions, all accessible from a smartphone.

Highlights
  • Maxillary Space Calculator
  • Mandibular Space Calculator
  • Expansion Calculator
  • Extraction Calculator
  • Space Maintenance Calculator
  • Surgical Expansion Calculator
  • Treatment Plan Calculator
Read full description

Take the guesswork out of orthodontic treatment planning with Ortho Calculator Mobile! Harness the power of mathematics to create custom treatment plans effortlessly, all from the convenience of your smartphone. Whether you're in the office, traveling, or anywhere in between, Ortho Calculator provides robust tools at your fingertips. Plan smarter, faster, and with greater accuracy using the ultimate mobile solution! Ortho Calculators included with All Access subscription: • Maxillary Space Calculator • Mandibular Space Calculator • Expansion Calculator • Extraction Calculator • Space Maintenance Calculator • Surgical Expansion Calculator • Super Calculator • Treatment Plan Calculator Support and Innovation: By subscribing, you’re not just unlocking advanced orthodontic tools—you’re directly supporting the passion and countless hours that went into creating them. Ortho Calculator is built on dedication and a commitment to ongoing improvement. Your subscription enables us to refine features and innovate further, ensuring this tool continues to deliver value for orthodontic professionals. Subscription Information: Experience full access for 1 week before committing to a monthly or annual plan. After the free trial ends, you’ll be automatically enrolled in your chosen plan, which will auto-renew unless canceled at least 24 hours before the renewal date. You can manage or cancel your subscription anytime through your account settings. By subscribing, you agree to these terms. Disclaimer: The information provided is intended solely for informational and educational purposes for licensed dental professionals. The orthodontic calculators, while based on evidence from reputable orthodontic literature as well as clinical experience, are tools designed to assist clinical decision-making. They are not intended to make final treatment decisions. Do not take the outputs from these calculators at face value; they are meant to complement, not replace, professional judgment and critical thinking. These calculators are generalized and not customized for any specific patient case. It remains the responsibility of the treating orthodontist or dentist to thoroughly assess and tailor care to each patient’s individual needs. By using this tool, you acknowledge that the ultimate responsibility for patient care lies with the treating clinician. Ortho Calculator Inc. will not be held liable for any risks, complications, or outcomes associated with acting on the information provided by this website. The Ortho Calculators are not intended for use by the general public. If you are not a licensed dental professional, please refrain from using or relying on the calculators or content provided here. By using the Ortho Calculators, you acknowledge and agree to the terms outlined in this disclaimer. Terms of use: https://www.orthocalculator.org/terms-of-use Privacy policy: https://www.orthocalculator.org/privacy-policy Ready to make informed, math-driven decisions? Start planning with Ortho Calculator now!

About

AlignerTime

Track your clear aligner or retainer wear time with a simple timer and photo timeline. Manage tray changes, build consistent habits, and visualize your smile's progress privately on your device.

Highlights
  • Aligner wear time tracking
  • Tray change management
  • Progress photo timeline
  • Daily wear habit building
  • Gentle reminders
  • Private, on-device data storage
Features
Read full description

Built for clear aligner wearers. AlignerTime tracks your wear time, manages tray changes, and shows your smile progress over time—without ads or an account. A simple timer for real life Record when your aligners are out and when they are back in. See your daily total, avoid leaving trays out too long, and stay close to your wear goal. If you forget to start or stop the timer, you can correct the record later. Build better wear habits Daily progress, calendar history, and gentle reminders make it easier to stay consistent through treatment. Get reminded after meals and review past days whenever you need to understand your routine. Manage every tray change Keep track of your current tray, know when it is time to switch, and stay aligned with your treatment schedule. When you need to wear a tray longer or your plan changes, update the schedule instead of starting over. See your smile change Take progress photos, build a private visual timeline, and compare photos side by side as your teeth gradually move. Your first 5 progress photos are included; AlignerTime Pro unlocks unlimited photos. Private and lightweight No app account required. Your wear records and photos are stored on your device. If you choose iCloud backup, a copy is also stored in your iCloud. AlignerTime has no ads. Made for Apple devices Use the core timer, daily progress, calendar history, tray plan, and first 5 progress photos on iPhone. AlignerTime Pro adds custom reminders, unlimited progress photos, Apple Watch controls, widgets, Live Activities, and Siri Shortcuts. Choose monthly, annual, or one-time lifetime access. Perfect for Invisalign users and anyone wearing clear aligners who wants to stay consistent through treatment. Privacy Policy: https://bracetime.github.io/bracetime-privacy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Ortho Calculator4 screens
AlignerTime4 screens

Verdict

The call

The clearest difference is rating: Ortho Calculator at 5.0 against AlignerTime's 4.4. Ortho Calculator also leads on review sentiment (100% vs 89%) and iOS requirement (15.0 vs 18.6). AlignerTime's advantage is monetization model (freemium vs subscription) and update cadence (every 3 weeks vs every 7 months). On price, ads, in-app purchases 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. Ortho Calculator sells 2 in-app purchases, starting at $1.99 per month and AlignerTime sells 4 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Ortho Calculator holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: AlignerTime has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Ortho Calculator's written reviews are positive against 89% of AlignerTime's.

UpkeepUpdate frequency

Ortho Calculator ships an update every 7 months, AlignerTime every 3 weeks. The most recent releases landed on November 4, 2026 and November 9, 2026 respectively.

Scorecard6 real differences · 4 level
Ortho Calculator versus AlignerTime: the parameters behind the verdict, then further details
ParameterOrtho CalculatorAlignerTime
PriceFreeFree
Rating5.0 (1 ratings) — better4.4 (8 ratings)
Positive reviews100.0% of reviews — better88.9% of reviews
Number of ratings18 — better
Update frequencyEvery 7 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFreemium — better
DevicesiPhone, iPad, iPod — betteriPhone, Apple Watch
Requires iOS15.0 — better18.6
Further details — not scored
Size67 MB90 MB
Age rating17+12+
DeveloperDaniel Richmond卓学 陈

Customer experience

Ortho Calculator

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

AlignerTime

All ratings8 ratings
Positive87.5%
Neutral0.0%
Negative12.5%
Written reviews9 reviews
Positive88.9%
Neutral11.1%
Negative0.0%

In-app purchases

2 purchases

Ortho Calculator

Subscriptions2
  • All Access Monthly7 Days trial$1.991 Month
  • All Access Annual7 Days trial$9.991 Year
4 purchases

AlignerTime

Subscriptions3
  • Monthly Subscription$3.991 Month
  • BraceTime Pro Annual7 Days trial$23.991 Year
  • Yearly Subscription7 Days trial$29.991 Year
One-time1
  • Lifetime$49.99

Questions

Is Ortho Calculator free?
Ortho Calculator is free to download, with in-app purchases available.
Is AlignerTime free?
AlignerTime is free to download, with in-app purchases available.
Which has better reviews, Ortho Calculator or AlignerTime?
Ortho Calculator is rated higher. Ortho Calculator averages 5.0 out of 5 from 1 ratings, while AlignerTime averages 4.4 from 8 ratings.
Do Ortho Calculator or AlignerTime have ads?
Neither Ortho Calculator nor AlignerTime shows ads.
Which is updated more often, Ortho Calculator or AlignerTime?
Ortho Calculator ships an update every 7 months, and AlignerTime every 3 weeks. Most recently, Ortho Calculator was updated on November 4, 2026 and AlignerTime on November 9, 2026.

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