Comparison

Pupillary Distance Measure X vs ShadowTimer

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

Head to head
About

Pupillary Distance Measure X

This utility app automatically measures your pupillary distance using your iPhone's camera. Simply take a selfie and get an accurate reading to help with ordering glasses or adjusting VR headsets.

Highlights
  • Automatic PD measurement
  • Quick and accurate readings
  • Uses iPhone camera
  • Supports eyeglasses ordering
  • Helps adjust VR headsets
Read full description

Automatic, quick and accurate pupillary distance measurement on iPhone X+ devices. How to measure your PD: Look straight at the camera as taking a selfie, tap the button and see your PD. You can use your ipd results for ordering eyeglasses online or for adjusting your VR headset. If your device is not supported by this app please check out our Pupillary Distance Measure app for older devices: https://apps.apple.com/us/app/pupillary-distance-measure/id1424323835 Contact support@vistechprojects.com if you have any questions or need assistance.

About

ShadowTimer

This app provides an immersive, atmospheric torch timer for tabletop role-playing games. It features a dynamic, burning torch that visually represents the passage of time, adding tension to gameplay. Designed for offline use with minimal distractions, it enhances the gaming experience.

Highlights
  • Animated, living torch flame
  • Customizable timer durations
  • Offline functionality
  • Clear, high-contrast visuals
  • Scalable text for all devices
  • Optional sound effects and haptics
  • Minimalist, distraction-free interface
Features
Read full description

ShadowTimer – A Torch Burns. Time Dies. ShadowTimer is a dark, atmospheric torch timer built for tabletop role-playing games where time matters — and light is life. Inspired by Shadowdark RPG and classic old-school dungeon crawling, ShadowTimer replaces abstract turn tracking with a living, burning torch. As the flame fades, tension rises. When it dies, consequences follow. No accounts. No cloud sync. No distractions. Just fire, time, and pressure. Core Features Single Torch Mode Run a single animated torch with a vivid, living flame Ignite, pause, resume, or extinguish the torch at any time Set custom durations from minutes to hours Time remains accurate even when the app is closed Optional sound effects, haptics, and spoken warnings Built for the Table ShadowTimer is designed to enhance the atmosphere at the table — not compete for attention. Optional Keep Screen On mode Clear, high-contrast visuals for low-light play Scalable text for phones and tablets Minimal interface with no clutter or interruptions Fully offline functionality Audio & Accessibility Atmospheric fire and interaction sounds Adjustable volume or full mute Optional vibration feedback Two font modes: ShadowFont — immersive and atmospheric EasyReader — clean and highly readable Settings and instructions always remain easy to read. Perfect for OSR Play ShadowTimer is ideal for: Shadowdark RPG Old-School Essentials Solo RPG play Dungeon crawls and hexcrawls Exploration-focused campaigns Light-as-resource systems Any game where time pressure matters No XP trackers. No character sheets. Just the clock, the flame, and what happens when it goes out. Privacy & Philosophy No accounts No ads No analytics No internet required All data stays on your device ShadowTimer is a tool — not a service. Light the torch. Hear it crackle. Watch the flame shrink. When it goes out… something happens.

Screenshots

Pupillary Distance Measure X4 screens
ShadowTimer4 screens

Verdict

The call

The clearest difference is price: ShadowTimer at Free against Pupillary Distance Measure X's $1.99. ShadowTimer also leads on rating (5.0 vs 4.5) and update cadence (every 2 months vs every 7 months). Pupillary Distance Measure X's advantage is in-app purchases (none vs 2) and ratings volume (178 vs 3). On ads, monetization model 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

ShadowTimer is free to download; Pupillary Distance Measure X costs $1.99 up front. ShadowTimer sells 2 one-off in-app purchases. Pupillary Distance Measure X asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ShadowTimer holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Pupillary Distance Measure X has 178 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

Pupillary Distance Measure X ships an update every 7 months, ShadowTimer every 2 months. The most recent releases landed on October 29, 2026 and October 8, 2026 respectively.

Scorecard6 real differences · 4 level
Pupillary Distance Measure X versus ShadowTimer: the parameters behind the verdict, then further details
ParameterPupillary Distance Measure XShadowTimer
Price$1.99Free — better
Rating4.5 (178 ratings)5.0 (3 ratings) — better
Positive reviews67.5% of reviews—
Number of ratings178 — better3
Update frequencyEvery 7 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better15.0
Further details — not scored
Size17 MB66 MB
Age rating4+12+
DeveloperVisTech.Projects LLCMichael Paulick

Customer experience

Pupillary Distance Measure X

All ratings179 ratings
Positive87.2%
Neutral5.6%
Negative7.3%
Written reviews77 reviews
Positive67.5%
Neutral5.2%
Negative27.3%

ShadowTimer

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Pupillary Distance Measure X

Reported bugs

8 issues
  • Does not work on iPhone 8 running iOS 16
  • Does not work on Apple 12 Pro w/ iOS 15.7
  • Does not work on 2nd gen iPhone SE
  • Camera button not clickable
  • Keeps prompting to move face farther away
Show 3 more
  • Results vary, impossible to tell which is correct
  • Received NaN for distance
  • App wants review before use

Requested features

4 requests
  • Include left and right eye measurement with nasal bone consideration
  • Allow saving of results
  • Improve compatibility with older devices
  • Provide clearer instructions within the app

ShadowTimer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Pupillary Distance Measure X

No in-app purchases

2 purchases

ShadowTimer

One-time2
  • ShadowTimer$5.99
  • Bearer of the First Light$19.99

Questions

Is Pupillary Distance Measure X free?
Pupillary Distance Measure X costs $1.99, with no in-app purchases.
Is ShadowTimer free?
ShadowTimer is free to download, with in-app purchases available.
Which has better reviews, Pupillary Distance Measure X or ShadowTimer?
ShadowTimer is rated higher. Pupillary Distance Measure X averages 4.5 out of 5 from 178 ratings, while ShadowTimer averages 5.0 from 3 ratings.
Do Pupillary Distance Measure X or ShadowTimer have ads?
Neither Pupillary Distance Measure X nor ShadowTimer shows ads.
Which is updated more often, Pupillary Distance Measure X or ShadowTimer?
Pupillary Distance Measure X ships an update every 7 months, and ShadowTimer every 2 months. Most recently, Pupillary Distance Measure X was updated on October 29, 2026 and ShadowTimer on October 8, 2026.

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