Interpupillary Distance Meter vs Pupil Detection
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Interpupillary Distance Meter
Quickly measure your inter pupillary distance using your iPhone or iPad. Achieve highly accurate results to 0.1mm for both near and far pupil distances. The app features large text for readability and supports dark mode.
- Accurate IPD measurement to 0.1mm
- Near and far pupil distance
- Glasses-free measurement for accuracy
- Large, readable text
- Dark mode support
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Measure your inter pupillary distance with your iPhone or iPad in 1 second. • Most accurate measure to 0,1mm • Near and Far pupil distance measurements • Take your glasses off for better accuracy • Large text so you can still read your measurement • Dark mode supported ;)
Pupil Detection
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Detect and track pupils.
Screenshots
Verdict
The clearest difference is price: Pupil Detection at Free against Interpupillary Distance Meter's $0.99. Pupil Detection also leads on update cadence (every 2 weeks vs every 43 months). Interpupillary Distance Meter's advantage is ads (none vs shown). On in-app purchases, 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
Pupil Detection is free to download; Interpupillary Distance Meter costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Interpupillary Distance Meter ships an update every 43 months, Pupil Detection every 2 weeks. The most recent releases landed on November 3, 2026 and October 9, 2026 respectively.
| Parameter | Interpupillary Distance Meter | Pupil Detection |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.6 (514 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 514 — better | — |
| Update frequency | Every 43 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.6 — better | 17.7.2 |
| Further details — not scored | ||
| Size | 1 MB | 36 MB |
| Age rating | 12+ | 4+ |
| Developer | Ubicolor Ltd | Hideaki Uchikoshi |
Bugs and requests
Interpupillary Distance Meter
Reported bugs
7 issues- Inaccurate IPD readings (up to 10% off)
- Does not work on iPad
- Incompatible with devices without true depth camera
- Cannot read results with glasses off
- App fails to recognize eyes
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- False compatibility information on App Store
- Cannot figure out how to measure near PD
Requested features
4 requests- Allow measurement of near PD
- Improve compatibility information on App Store
- Fix compatibility for iPads and older iPhones
- Allow reading results with glasses on
Pupil Detection
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Interpupillary Distance Meter
No in-app purchases
Pupil Detection
No in-app purchases
Questions
Is Interpupillary Distance Meter free?
Is Pupil Detection free?
Do Interpupillary Distance Meter or Pupil Detection have ads?
Which is updated more often, Interpupillary Distance Meter or Pupil Detection?
Other comparisons
