Comparison

Aligner Timer vs Perigee

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

Head to head
About

Aligner Timer

Features
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Aligner Timer keeps your clear-aligner treatment on track: one tap when your trays come out, one tap when they go back in. No account. No ads. No subscription. WHY PEOPLE SWITCH TO ALIGNER TIMER • Live Activity & Dynamic Island — when your trays are out, a live timer sits on your Lock Screen so you can't forget them after lunch. Tap it to mark them back in without opening the app. • A real Apple Watch app — toggle from your wrist, see today's wear at a glance, and keep a streak complication on your watch face. The Live Activity mirrors into the watch Smart Stack too. • Sync that actually works — your history lives in your private iCloud and syncs automatically between your iPhone and Apple Watch. No login, no developer servers, nothing to lose. • Fix your history — forgot to tap? Add, edit, or backdate any event with exact times from the calendar. • Travel-proof days — stats stay anchored to your home time zone, so a trip abroad doesn't wreck your streaks or daily totals. EVERYTHING YOU NEED • Wear-time timer with a daily goal (16–24 h) and progress ring • Smart reminders: "put them back in", "still eating?" follow-ups, and tray-switch day — all snoozable • Compliance calendar: green, yellow and red days at a glance, with a pulsing blue dot for today • Stats: daily hours, 7-day average, goal-hit rate and streaks • Tray progression with estimated finish date • Daily discomfort journal (1–5 scale) • Export your data as CSV, or a clean PDF report to share with your orthodontist • Home Screen and Lock Screen widgets • Siri & Shortcuts: "aligners out", "aligners in", toggle PRIVATE BY DESIGN Your data stays on your device and in your personal iCloud. We run no servers, show no ads, track nothing, and collect nothing. Works with Invisalign®, ClearCorrect®, Spark™, Byte® aligners, Angel Aligner and any other removable clear aligner or retainer. Aligner Timer is a tracking aid, not medical advice — always follow your orthodontist's or dentist's instructions. Invisalign is a registered trademark of Align Technology, Inc. ClearCorrect is a registered trademark of the Straumann Group. Aligner Timer is an independent app and is not affiliated with or endorsed by any aligner manufacturer.

About

Perigee

This app consolidates Apple Watch readings like heart rate, sleep, and temperature into a daily morning summary. It allows users to log symptoms and HRT notes, revealing patterns between their experiences and physiological data. The app provides insights and suggestions to help users understand their perimenopause journey.

Highlights
  • Consolidated Apple Watch readings
  • Daily morning summaries
  • Symptom logging
  • HRT log
  • Pattern visualization
  • Doctor-ready PDF export
Features
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You're not imagining it. The 3am wake-up. A heart that suddenly races. A full night of sleep that still leaves you flat. Perimenopause can make nights hard to make sense of — and Apple Watch can leave you with numbers but no clear picture. Perigee brings five Apple Watch readings into one clear morning view: HRV — the small changes in time between heartbeats — resting heart rate, sleep, wrist temperature, and breathing rate while you sleep. Each is compared with what’s usual for you. No athlete score. No mystery grade. WHAT YOU GET EVERY MORNING • A useful morning explanation: what changed, what likely contributed, and one practical suggestion. • Five Watch readings in one place, each beside what’s usual for you. • A plain note when the Watch missed part of the night or needs more nights for a fair comparison. No guessing. TRACK WHAT YOU FEEL • Log a symptom in ten seconds — hot flashes, night sweats, racing heart, brain fog, low mood, poor sleep. • Keep a simple HRT log and see your notes beside your Watch readings over time. Perigee never tells you what to take or change. SEE THE PATTERNS • See which symptoms and Watch readings happened on the same nights. Open the dates, counts and missing nights behind each Pattern. • Export a clean, doctor-ready PDF to bring to your next appointment. WHY PERIGEE IS DIFFERENT Perigee is made for perimenopause and menopause, when sleep, night sweats, brain fog, hot flashes, a racing heart or low mood can be hard to explain. It keeps your symptoms, HRT notes and Apple Watch readings together, so you can see what changed, what repeats, and what to bring to your doctor. FREE, AND FAIR Your Watch readings and history are free, forever. So are symptom and HRT logs. The free plan includes up to one morning summary a week and three a month. Perigee Plus unlocks a useful explanation every morning, full weekly reports, and doctor-ready PDF export. AN HONEST WORD ON WHAT THIS IS Perigee is a wellness and self-knowledge companion, not a medical device. It does not detect, diagnose, or treat menopause or any condition, and it does not give medical or medication advice. It shows your own Watch readings and symptom log so that you — and your doctor — can review them together. Always talk to a qualified healthcare professional about symptoms, treatment, or any decision about HRT. SUBSCRIPTION Perigee Plus is an auto-renewing subscription available as a monthly or annual plan. Eligible new subscribers can start with a 7-day free trial; the Apple purchase sheet shows the offer available to your account. • Payment is charged to your Apple Account at confirmation of purchase. • It renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. • Manage or cancel anytime in your App Store account settings. Terms of Use: https://perigee-app.com/terms Privacy Policy: https://perigee-app.com/privacy Made for the years the charts forget. You're not imagining it — now you have dates and readings to bring with you.

Screenshots

Aligner Timer4 screens
Perigee4 screens

Verdict

The call

The clearest difference is in-app purchases: Aligner Timer at none against Perigee's 2. Perigee's advantage is update cadence (every 3 days vs every 3 weeks). On price, ads, device support and iOS requirement 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. Perigee sells 2 in-app purchases, starting at $6.99 per month. Aligner Timer asks for nothing beyond the download.

UpkeepUpdate frequency

Aligner Timer ships an update every 3 weeks, Perigee every 3 days. The most recent releases landed on September 12, 2026 and September 24, 2026 respectively.

Scorecard2 real differences · 8 level
Aligner Timer versus Perigee: the parameters behind the verdict, then further details
ParameterAligner TimerPerigee
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 3 weeksEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS18.018.0
Further details — not scored
Size6 MB23 MB
Age rating4+4+
DeveloperAlex Davis俊峰 罗

In-app purchases

None

Aligner Timer

No in-app purchases

2 purchases

Perigee

Subscriptions2
  • perigee Plus (Monthly)7 Days trial$6.991 Month
  • perigee Plus (Yearly)7 Days trial$49.991 Year

Questions

Is Aligner Timer free?
Aligner Timer is free to download, with no in-app purchases.
Is Perigee free?
Perigee is free to download, with in-app purchases available.
Do Aligner Timer or Perigee have ads?
Neither Aligner Timer nor Perigee shows ads.
Which is updated more often, Aligner Timer or Perigee?
Aligner Timer ships an update every 3 weeks, and Perigee every 3 days. Most recently, Aligner Timer was updated on September 12, 2026 and Perigee on September 24, 2026.

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