# PinholeMeter > Pinhole photography light meter with exposure measurement and countdown timer. (iPhone/iPad app by electrico elefante.) - Source: https://appshunter.io/ios/app/pinholemeter/id501893760 (this page in markdown: same URL + `.md`) - Developer: [electrico elefante](https://appshunter.io/developer/501893763) - Category: Photo & Video, Utilities - Price: Free - Rating: 3.60/5 from 7 App Store ratings · 9 written reviews indexed - Age rating: 4+ - Requires: iOS 7.0 · 4 MB - Languages: American English, Japanese - Released: 2012-02-16 - Data updated: 2026-08-19 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/pinholemeter/id501893760/reviews.md ## What is PinholeMeter? This app is a light meter that specializes in pinhole photography. First, please set the F number. Next, please set the ISO sensitivity of film to use. Finally, in the preview window, please tap where you want to measure the exposure. note: If you do not know the F-number of your pinhole camera, please calculate focal length / pinhole diameter. If you want to use photographic paper, please set to ISO6. Please note that in a dark place, you may not be measured accurate exposure. [Using the Countdown timer] 1. To start the countdown, tap the timer icon to the right of the exposure time. 2. Preview screen will be dark, and exposure time is displayed in white letters. It will decrease one second at a time. *To stop the timer, tap the Close(X) icon. caution: During the countdown, do not close this app, or do not navigate to another screen. Timer is stopped. ## Key features - Pinhole photography light meter - Set F-number and ISO sensitivity - Tap to measure exposure - Countdown timer for exposure - Calculates focal length/pinhole diameter ## Recent user reviews (9 of 9) All indexed reviews: https://appshunter.io/ios/app/pinholemeter/id501893760/reviews.md ### 5/5 — Does what it says on the tin *2023-08-19, version 1.3.5* I got this to use with my new pinsta camera. I had made several attempts before using this app which where all failures. I used this app for my next shot and was very happy with the results. Simple to use great little app. ### 5/5 — Does what it says *2021-09-01, version 1.3.5* I use this to meter pinhole cameras, put in your f stop (you must know the size of your pinhole first) and your paper or film iso rating, it works great and is accurate. ### 2/5 — Adware *2019-05-03* The app seems to work ok, giving exposure time estimates based on light meter reading, ISO, and aperture. Custom apertures are possible, f/222 for example, which is critical for pinhole photographers. Unfortunately this app is ad-supported, which is neither disclosed in the description nor shown in the app screenshots. So thanks for wasting my time... ### 1/5 — Don’t bother. *2018-11-12* App doesn’t work. Keeps asking to allow camera access but no way to do that. ### 5/5 — Excellent! *2015-07-18* This app works great for 3D printed pinhole cameras, and the only thing I would like to see is a selection for films at ISO 125 & 320. Other than that, keep up the great work! ### 5/5 — Excellent App *2013-09-22* Works great, gives accurate readings across many light spectrums. Ad-based, but they aren't too intrusive ### 3/5 — Loved it until.... *2013-02-12* This is a great app. When it works. When trying to change f-stops, the app to crashes. The only work around I've been able to find is uninstalling and reinstalling. ### 1/5 — Fail *2013-01-01, version 1.0* Thought it would be good as a guide. The app just crashed every time I tried to change the f/ stop. Don't waste your time. ### 5/5 — Great,but... *2012-10-07, version 1.0* I love this app! My only problem is if you zero out the f-stop the app crashes when you go to change it again. ## Frequently asked questions about PinholeMeter ### What is PinholeMeter used for? PinholeMeter is a specialized light meter designed to assist with pinhole photography. It helps users determine the correct exposure settings by measuring light levels. ### How do I use PinholeMeter? First, set your camera's F-number and ISO sensitivity. Then, tap on the preview window where you want to measure the exposure. The app will provide the necessary readings. ### What if I don't know the F-number for my pinhole camera? If you don't know the F-number, you can calculate it by dividing the focal length of your lens by the diameter of your pinhole. ### Can I use PinholeMeter with photographic paper? Yes, if you are using photographic paper, you should set the ISO sensitivity to 6 for accurate measurements. ### Does PinholeMeter have a countdown timer? Yes, PinholeMeter includes a countdown timer. Tap the timer icon next to the exposure time to start it. The preview screen will darken, and the exposure time will count down. ### What happens if I close PinholeMeter during the countdown? During the countdown, do not close the app or navigate to another screen, as this will stop the timer. Ensure the app remains active for the countdown to complete. ### What devices does PinholeMeter support? PinholeMeter is available for iPhone and iPod devices. It was last updated on December 5, 2018, with version 1.3.5. ### What is the user rating for PinholeMeter? PinholeMeter has a rating of 3.6 stars based on 7 ratings. The app is rated for ages 4 and up. ## Version history (last 5 releases) ### 1.3.5 — 2018-12-05 Bug fix. ### 1.3.4 — 2015-08-12 Added ISO 40, 125, 160, 250, 320, 500, 640, 1000 to List. ### 1.3.3 — 2015-07-21 General bug fixes. ### 1.3.2 — 2014-10-25 General bug fixes. ### 1.3.1 — 2014-10-08 Layout adjustment. 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User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-19.*