# PD Measure Ruler — user reviews > 19 indexed App Store user reviews of PD Measure Ruler by VisTech.Projects LLC, rated 4.10/5 from 36 ratings. - Source: https://appshunter.io/ios/app/pd-measure-ruler/id6670557555/reviews - App overview in markdown: https://appshunter.io/ios/app/pd-measure-ruler/id6670557555.md - Rating breakdown: 5★ 23 · 4★ 5 · 3★ 1 · 2★ 1 · 1★ 6 ## Newest reviews (4 of 19) ### 1/5 — Terrible *2025-07-09, version 1.0.4* Do not pay for this app. I did and took 4 measurements and they were all different. Useless. SCAM ### 1/5 — NOT A FREE APP *2025-07-01* It’s completely free to download and doesn’t say anything about paying for a service. Everything on the app is to pay for and there’s no free trials or anything like that. May as well be a paid app instead of making people download it to then pay ### 1/5 — Doesn’t work *2025-05-07* I tried doing it manually and the auto option and neither one worked after I paid for it. **Developer response:** Please contact support@vistechprojects.com with more details about the issue, and we will help. ### 1/5 — Deception *2025-03-04* Everything in the app is paid. If you want to use automatic measurement, you have to pay. But if you prefer to use manual measurement, you also have to pay. There is nothing in the app that works without paying. In fact, the only free thing in the app is the option to download it from the AppStore. Why didn't they just add the option to pay to be able to download it? That would make much more sense. **Developer response:** Thank you for your feedback. If you read the description, we have clearly stated that manual and automatic measurements are paid, so you have full information about what to expect before downloading the app. ## Most critical reviews (10 lowest-rated) ### 1/5 — Not Free as stated *2026-08-06* It makes you pay $5 to use it, (the manual doesn’t even work) and the automatic one gave a different answer every time. So not exactly accurate. ### 1/5 — awful *2026-05-14* makes you pay and then it doesn’t even work ### 1/5 — Not free *2026-01-12* Pay to use ### 1/5 — Don’t do this scam app *2025-12-01* Advertises as free to download tries to charge per week. Who needs a weekly pd measure. Such a scam. ### 1/5 — Utterly useless *2025-11-26* Comparing various PD apps to professional measurements and this is by far and away the worst. Wildly inaccurate, not even close and it’s the only one to charge so far! Absolute rip off. ### 1/5 — Blind faith? *2025-11-10* They expect you to pay for the app before you’re even allowed to try it out. ### 1/5 — Horrible *2025-10-24, version 1.0.4* Doesn’t work. You have to pay and i just wasted my money. The app gets stuck every 2 seconds. I didn’t even get to messure. ### 1/5 — Overpriced *2025-10-15* $5/ week for something you’ll use once? Should be free ### 1/5 — No pay no play *2025-08-11* money upfront or no dice! ### 1/5 — Not free *2025-07-23* This app costs 2.99 a WEEK to use. There’s no free trial or limited functionality before you pay. Just a free to download paywall ## Most praised reviews (5 highest-rated) ### 5/5 — Tata *2026-01-30* Tata ### 5/5 — Annie *2025-08-09* Good ### 5/5 — Nice tool *2025-05-21* I like it ### 5/5 — A1 *2025-04-18* Best pupillary measuring app out!!! Very precise ### 2/5 — Pay to use, inconsistent, no instructions *2025-05-13* Downloaded this and had to subscribe to use it, then found out the auto function is faulty (gave me 5 different measurements) and the other functionality is just a ruler. **Developer response:** Please contact support@vistechprojects.com if you need help with the app. The manual measurement (just a ruler) gives a very accurate result. The link to instructions is in the app as well: https://www.vistechprojects.com/all-measurement-apps/pupillary-distance-measure-pd-meter --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-30.*