# X-Ray Timer — user reviews > 62 indexed App Store user reviews of X by Lance Henderson, rated 4.80/5 from 8 ratings. - Source: https://appshunter.io/ios/app/x-ray-timer/id350390647/reviews - App overview in markdown: https://appshunter.io/ios/app/x-ray-timer/id350390647.md - Rating breakdown: 5★ 7 · 4★ 0 · 3★ 1 · 2★ 0 · 1★ 0 ## Newest reviews (13 of 62) ### 4/5 — Question *2025-11-07, version 4.0* Is there anyway you can add a feature where it saves your recent calculations ### 3/5 — Great for Xray Hands *2016-09-15, version 3.0* Simple yet great app for those out there pushing pills. 3 stars because it has some bugs that need fixing now. Updated my phone to iOS 10 and now this app crashes if 2 or more fields have a period in it. Will fix review to 5 stars once bugs are removed. ### 4/5 — Use it all day.. *2015-06-18, version 3.0* Need an update already, like which wire to use, maybe with the coundown it shows the density climbing up and uou can stop it at your desired density...ect. Love the app. Looking forward to see whatsnext ### 4/5 — Great but *2013-04-16, version 3.0* It would be nice to select a film type Instead of looking for the R factor but I use it at least 3-5 times a week ### 3/5 — ... *2013-04-03, version 3.0* I downloaded this to see if my room had radiation ### 4/5 — Good stuff *2013-03-31, version 3.0* I'm still in training , And this is a real help it would be nice to just pick 50 or 80 on film , and not have to cal source to film , but other than that I love this , the slide cal is a real pain ### 4/5 — Very cool *2013-01-06, version 3.0* Helpful! Though could you add in something to determine the restricted area, rad area, and high rad area? Maybe source type, curies, then spits out the mR/h boundaries? ### 4/5 — Mr Hoy *2012-08-23, version 3.0* Had to bump up the R factor a little bit. ### 4/5 — Good almost great! *2012-07-20, version 3.0* Great now with metric addition! ### 5/5 — Steve *2012-06-17, version 2.1* I always add .125" for reinforcement and my shots always come out perfect. I think the App works great!! ### 5/5 — Perfect *2012-06-11, version 2.1* The app is spot on.Good job. ### 4/5 — Good *2012-05-31, version 2.1* Would like conversion to mm for sure. Also either info on your film factors, like a simple reference to common films, Agfa d4 or d7. Kodak mx 125 or aa 400. Or On how you came to factor or what spec you used. Still cool app. ### 5/5 — Exposure factors *2012-02-27, version 2.1* great app! a baseline to get started: truck: D7-1.7 D5-2.5 D4-4.5 processor: D7-1.1 D5-2.0 D4-3.8 ## Most critical reviews (10 lowest-rated) ### 1/5 — Way off *2016-01-22, version 3.0* This app has been confusing me. I have this and one other gamma ray app along with the old school exposure calculator that companies give you. Shooting a 42" panoramic, it says I should shoot it 1min 35secs. Which is what I shoot a 36" panoramic with the same cuties. At a 4 minute develop time for the 36", it's perfect density. The other app I have says 2 min 10sec which sounds more accurate. Think I'll be using my other app instead of this one. ### 1/5 — What does that even have to do with x rays *2013-04-08, version 3.0* I hate this app ): ### 1/5 — . *2012-05-10, version 2.1* Shot times are way off when shooting large pipes. Fix that and it would be an awesome app and would use it more often.. As of now Id rather used my Manuel shot calculator..(2.1) ### 1/5 — S''' *2012-03-19, version 2.1* No x-ray on this app ### 2/5 — ?? *2021-02-28, version 4.0* it is for how much density 3? ### 2/5 — Doesn't work *2012-09-26, version 3.0* Good idea, but the app does not work. Try to calculate in the same conditions with Ci and TBq and the result is not the same, same thing if you try to do it in inches and to convert it in mm. ### 2/5 — ابو شوق *2011-08-22, version 2.1* جيد بس حساب الوقت مو صح ميه بالميه اتمنى مراجعته وبالتوفيق ### 2/5 — What R Factor are y'all using? *2010-08-13, version 0* I'm using Agfa D5 and shooting for 2.5 density the r-factor I have is 2.7 . So what r-factor would y'all use and how did you get it? The formula I normally use is: 1st step ( wt + wt + weld build up) gives you total thickness of steel, align the total up with a chart and that gives you the energy of IR192. 2nd step ((pdi*pdi*eIR192*RF)/(Curies*1000)) basic algebra and wala. I always come up with two different shot times using the formula vs. the app, (app 45-60 seconds longer). I know the formula is right, been using it for years. So why isn't it working for me? The Barricade app is great, sure beats using the inverse square law. But don't get to dependent on it bc you cant use it tests. ### 2/5 — Needs an update!! *2010-04-13, version 0* Needs mm added and my be a few more sources. Hope you guys add an update then 5* ### 3/5 — Exposures *2024-05-30, version 4.0* The exposures I’ve been getting are abit off graphs are kinda light ok for a test shot tho ## Most praised reviews (10 highest-rated) ### 5/5 — Excellent app *2025-03-12, version 4.0* This app is amazing and saves so much time. Would be really cool if there was a memory feature to look up recent calculations while app is still open. ### 5/5 — NDT gamma calculator *2024-10-30, version 4.0* I use this app daily at work. The times are bang on when developing at 68F for 6 minutes. ### 5/5 — Prefer this to the JEM calculator *2020-11-11, version 4.0* This app works great. As long as I enter all the numbers in correctly my film turns out. It even works well when I’m calculating for a concrete shot. It stopped working after a recent IOS update. Hoping it gets back up and running soon! ### 5/5 — Great *2017-02-01, version 4.0* This app works very well just like using a slide calculator ### 5/5 — 굿굿 *2014-09-12, version 3.0* 아주 좋아요. 급하게 노출시간볼때 딱~~~ 끝! ### 5/5 — Great *2014-06-23, version 3.0* If possible to add for Double/Single wall application ### 5/5 — Works could add sone things *2014-03-07, version 3.0* Add what kind of film double wall single wall pipe density per name ### 5/5 — 완전 편하고 좋음네다~~ *2013-11-20, version 3.0* 좀 더 다양한 종류로 있었으면 더 좋겠지만 이만해도 충분한거 같네요~ ### 5/5 — Great App *2012-09-03, version 3.0* The app is a great tool. The update is great. Would like to see a few things added if possible. 1 - Timer, 2 -Material Type, 3 - R-factor Calculator (film type/grade - density), 4 - Double Wall/ Single Wall, & 5 - Film Load (double, triple, etc). Keep up the great work! ### 5/5 — Great app! *2012-07-19, version 3.0* Updated version seems easier to use. Thanks. --- *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 2026-07-17.*