Opthy vs Maobao
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Opthy
Measure your Pupillary Distance (PD) accurately with this app, leveraging advanced technology for personalized glasses fitting. It transforms your iPhone into a measurement device, enabling confident online prescription glasses purchases.
- Contactless PD measurement
- Quick IPD for far vision
- Order prescription glasses online
- iPhone 3D body scanner
- Personalized fit for glasses
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Pupillary Distance: The key to your perfect glasses. Discover Opthy, powered by global eyewear expert EssilorLuxottica. Get your Pupillary Distance just right with Opthy, the solution backed by EssilorLuxottica’s eyewear experts. Swiftly measure your Pupillary Distance (PD) with a few clicks, so you can find a comfortable and personalized fit for your perfect glasses. Moreover, experience the cutting-edge capability of turning your iPhone into a 3D body scanner and measurement device for purchasing prescription Rx glasses online with Opthy. Key Features: • Advanced contactless tool for PD measurements: Opthy's cutting-edge technology specializes in swiftly capturing Pupillary Distance (PD) measurement, revolutionizing the conventional process. • Quick IPD measurements for far focal lengths: Opthy offers quick Interpupillary Distance (IPD) measurements for far vision, allowing you to find a comfortable viewing experience for distant distances. • Order online prescription glasses with confidence: Opthy empowers you to confidently order prescription glasses online, knowing that you obtained personalized measurements for achieving a comfortable fit. About Pupillary Distance: Pupillary Distance is the distance between the center of your pupils, measured in millimeters. An average PD measurement is about 63mm. This crucial metric is essential when buying glasses, as it indicates the specific lens area you look through, helping you to achieve optimal comfort and clarity in your visual experience. Swift and User-friendly: Opthy has streamlined the process for you. All you need is your iPhone; the Opthy app will walk you through the quick and seamless scan. Once done, you'll receive the all-important Pupillary Distance measurement. Suitable for Everyone: Whether you wear glasses or not, Opthy caters to all adult users. It provides personalized Pupillary Distance measurements for compatible prescriptions. Prescription Compatibility: Opthy is compatible with single-vision prescription lenses between -5D and +5D. Please note that it is unsuitable for higher-powered prescriptions, bifocals, progressives, or multifocals. Professional in-person PD measurements are recommended for achieving the best fit and visual experience for individuals requiring more complex prescriptions. Age Restriction: For user safety, Opthy is not intended for use by persons under the age of 18. EssilorLuxottica prioritizes the well-being of our users and adheres to age-appropriate guidelines. Experience Cutting-edge Technology: Opthy harnesses cutting-edge technology to enhance your eyewear selection process. Its innovative approach to measuring Pupillary Distance (PD) empowers you with your personal PD so you can make confident decisions when purchasing glasses or adjusting your virtual reality (VR) headset.
Maobao
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Maobao is a baby-care log built for one rule: you should never mis-tap at 3 a.m. One-tap logging • Bottle, nursing timer, diapers, sleep timer, bath, temperature, medication. Big buttons in the thumb zone; long-press to repeat the last entry. • Arrange your own quick buttons: cord care, tooth brushing, ointment changes each get their own. • Hold to talk: one sentence can log two entries. Speech recognition runs entirely on your phone. • Sleep and awake-lying entries can record head direction (left / center / right), with a suggestion for next time based on the last 7 days. Apple Watch • Raise your wrist to see time since the last feed and diaper; log a bottle or diaper with one tap; start, switch sides and stop nursing or sleep timers from the watch. • Works without your phone nearby and merges when you are back; dictate a sentence on the watch too. • Complications and Smart Stack show the last feed and any running timer; colors follow your phone theme. Stats you can read • Last feed, last diaper, last wake-up at a glance. • 7- and 30-day feeding volume and count, sleep, diapers, temperature. • Week table: a 7-day rhythm grid (when baby slept and fed) plus daily totals; flip back a week, share as PDF or image. • Swipe back on Home to see yesterday and earlier days. • WHO growth curves and percentiles, shown without judgement. Reminders • Next feed: based on the last feed and your interval, so you know roughly when your baby will be hungry and can have the bottle ready before the crying starts. • Medication: next dose from the interval you type; ointments can remind you after poops or baths. • Next feed, vaccines and check-ups, custom reminders. • Lock-screen Live Activity and widgets: stop a timer or log a bottle with one tap. Log together • No account needed. When you want to share with a partner or grandparents, join with an invite code; entries sync instantly and show who logged them. • Optional push notification when the other caregiver logs something. Keep it • Photo wall by month, one-tap milestones. • Visit summary: a one-page PDF organized like the parent-record pages of Taiwan's child health handbook. • Export a backup file or CSV any time. Your data is yours. Six color themes plus custom colors; the app icon changes color too. Maobao only records what you enter and gives no medical advice; medication intervals follow your prescription.
Screenshots
Verdict
The clearest difference is update cadence: Maobao at every 2 days against Opthy's monthly. Opthy's advantage is iOS requirement (14.0 vs 26.0). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Opthy ships an update monthly, Maobao every 2 days. The most recent releases landed on November 3, 2026 and October 8, 2026 respectively.
| Parameter | Opthy | Maobao |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (3K ratings) — better | — |
| Positive reviews | 13.2% of reviews | — |
| Number of ratings | 3K — better | — |
| Update frequency | Monthly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Requires iOS | 14.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 217 MB | 11 MB |
| Age rating | 12+ | 4+ |
| Developer | Luxottica Group SPA | SCONE |
Bugs and requests
Opthy
Reported bugs
3 issues- App crashes or freezes
- Face not detected despite proper lighting
- Incompatible with certain devices
Requested features
3 requests- Voice guidance for instructions
- Progress indicator during measurement
- Ability to save and view past measurements
Maobao
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Opthy
No in-app purchases
Maobao
No in-app purchases








