PD Measure Ruler vs Nara Command Center
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PD Measure Ruler
Accurately measure your pupillary distance (PD) for eyeglasses and VR headsets. Offers both manual and automatic measurement modes for precise results. Optimize your eyewear fit with this user-friendly tool.
- Manual PD measurement
- Automatic PD measurement
- Accurate and precise readings
- User-friendly interface
- Eyeglass fitting assistance
- VR headset adjustment
Read full descriptionHide full description
Unlock the perfect fit for your eyeglasses with our PD Ruler App – your fast and accurate tool for measuring pupillary distance (PD) using your iPhone! Accuracy and verifiability of the result are the main priority of this application for precise inter pupillary distance measurement, making it the best app for ordering glasses online, or just keeping track of your eye measurements. *** Manual Measurement *** (Requires subscription) Our app includes a highly accurate manual measurement mode, that works for most devices. Follow the intuitive on-screen guides to ensure precise results every time, no matter what device you're using. *** Quick & Automatic *** (Requires subscription) PD Measurement Effortlessly measure your pupillary distance with just one tap on supported devices (iPhone X +). Using your iPhone camera's advanced features, our app automatically detects and calculates your PD in a matter of seconds – giving you precise results for all your eyewear needs. Perfect for Glasses & VR Headsets Whether you’re buying new eyeglasses, adjusting a VR headset, or simply checking your PD for other purposes, our app makes the process hassle-free and accurate. Key Features: - Manual Measurement Mode: Perfect for most devices, ensuring no one is left behind (with a subscription). - Automatic PD Measurement: Fast, precise results using your camera's advanced features (with a subscription). - Accuracy & Precision: Our algorithm is fine-tuned for optimal performance to give accurate readings. - User-Friendly Interface: Simple and clear instructions guide you through the measurement process effortlessly. Take the guesswork out of your eyeglass fitting process with our app. Enjoy seamless accuracy. Optimize Your Vision. Optimize Your Fit. Manual and Automatic measure features require a subscription to use. By subscribing to the app you will be able to enjoy the full functionality of the app and measure pd distance using the manual method, which works on all devices, and optionally the automatic method if your device is supported. Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. You can cancel your subscription at any time from your App Store account. Enjoy the app! Please contact support@vistechprojects.com for questions or inquiries. Terms of Use: https://www.vistechprojects.com/term-of-use Privacy Policy: https://www.vistechprojects.com/privacy-policy
Nara Command Center
Manage personal and family records, track health metrics like calories, and prepare for medical appointments. Seamlessly integrate data from Apple HealthKit and wearables to find appropriate care.
- Record management
- Health metric tracking
- Calorie tracking
- Doctor visit preparation
- Care coordination
- Wearable integration
Read full descriptionHide full description
Nara helps users and families manage records, understand what changed, track calories, prepare for doctor visits, and find the right care.
Screenshots
Verdict
The clearest difference is rating: Nara Command Center at 5.0 against PD Measure Ruler's 4.0. Nara Command Center also leads on in-app purchases (none vs 4). PD Measure Ruler's advantage is update cadence (every 6 days vs every 5 weeks) and ratings volume (41 vs 1). 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
Both are free to download. PD Measure Ruler sells 4 in-app purchases, starting at $2.99 per 7 days. Nara Command Center asks for nothing beyond the download.
Nara Command Center holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: PD Measure Ruler has 41 ratings behind it against 1, so its average is the more settled of the two.
PD Measure Ruler ships an update every 6 days, Nara Command Center every 5 weeks. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.
| Parameter | PD Measure Ruler | Nara Command Center |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (41 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 27.3% of reviews | — |
| Number of ratings | 41 — better | 1 |
| Update frequency | Every 6 days — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 24 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | VisTech.Projects LLC | Arun Menon |
Customer experience
PD Measure Ruler
Nara Command Center
In-app purchases
PD Measure Ruler
- Weekly$2.997 Days
- Weekly$4.997 Days
- Weekly$7.997 Days
Show 1 moreShow fewer
- Monthly$14.991 Month
Nara Command Center
No in-app purchases
Questions
Is PD Measure Ruler free?
Is Nara Command Center free?
Which has better reviews, PD Measure Ruler or Nara Command Center?
Do PD Measure Ruler or Nara Command Center have ads?
Which is updated more often, PD Measure Ruler or Nara Command Center?
Other comparisons















