# illumeter — Light Meter In Your Pocket > A simple pocket light meter for photography with exposure measurement and frame logging. (iPhone/iPad app by Seunghun Yang.) - Source: https://appshunter.io/ios/app/illumeter/id6474086258 (this page in markdown: same URL + `.md`) - Developer: [Seunghun Yang](https://appshunter.io/developer/1586944242) - Category: Photo & Video, Productivity - Price: Free - Rating: 4.64/5 from 11 App Store ratings · 6 written reviews indexed - Age rating: 4+ - Requires: iOS 16.0 · 12 MB - Languages: English, Korean - Released: 2023-12-11 - Data updated: 2026-07-18 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/illumeter/id6474086258/reviews.md ## What is illumeter? illumeter, The Simplest Light Meter in Your Pocket. Exposure Meter • Choose the value you want to measure from Aperture, Shutter Speed, or ISO. • The selected value automatically adjusts based on changes in the other two settings. • Tap a specific point on the screen to lock the exposure to that area. • An exposure compensation feature is provided to help you handle various challenging lighting conditions. Frame Logging • Log your frames by composing your shot and pressing the shutter button. • Location, date and time, EV value, and settings are recorded with each frame. • Review your recorded frames in a list and on a map. • Easily delete or edit incorrect frames. Settings & Personalization • Easily toggle various features on or off. • Deactivate or remove unused values. • Customize the app's appearance and feedback to your preference. ## Key features - Exposure measurement (Aperture, Shutter Speed, ISO) - Tap-to-focus exposure lock - Exposure compensation - Frame logging with location and settings - List and map view of logged frames - Customizable settings and appearance ## Recent user reviews (6 of 6) All indexed reviews: https://appshunter.io/ios/app/illumeter/id6474086258/reviews.md ### 4/5 — No front facing camera *2025-11-21* It would be nice to have the front piece and camera option as well… ### 5/5 — Good tool *2024-12-23* Does exactly what it says it will do. Very helpful! ### 5/5 — Nice meter and simple to use *2024-06-09* Been enjoying using the meter it’s been my go to on my phone. ### 5/5 — Nice meter *2024-05-01* Nice but can’t delete the saved previews. **Developer response:** Thanks for using illumeter! The delete/export logged photo feature is currently under development, aiming to be included in the next version, 1.3.0. The update will be available soon, so stay tuned. Thank you! ### 5/5 — Formidable !!! *2024-04-07, version 1.2.1* Fonctionne super bien, j’adore! ### 5/5 — 최고의 노출계 앱 *2024-04-05, version 1.2.1* 사용하기도 쉽고, 앱도 가볍고, 최고의 노출계 앱입니다! 감사히 잘 쓰겠습니다! :) ## Frequently asked questions about illumeter ### What devices does illumeter support? illumeter is currently supported on iPhone devices. It was last updated on June 9, 2025, with version 1.5.0. ### How accurate is illumeter's light metering? illumeter allows users to measure aperture, shutter speed, and ISO, with automatic adjustments based on changes in the other two settings. It also includes an exposure compensation feature for challenging lighting. ### Can I log my photos with illumeter? Yes, illumeter allows you to log your frames by composing your shot and pressing the shutter button. Each log records location, date and time, EV value, and settings, which can be reviewed in a list or on a map. ### Is illumeter free to use? Yes, illumeter is available for free. There are no in-app purchases or subscriptions required to use its core features. ### Does illumeter have ads? No, illumeter does not contain advertisements. It is a completely ad-free application. ### What is the age rating for illumeter? illumeter has an age rating of 4+, making it suitable for a wide range of users. ### How often is illumeter updated? The app was last updated on June 9, 2025, indicating active development and support. Users can expect regular improvements and bug fixes. ### Can I customize illumeter's appearance? Yes, illumeter offers settings and personalization options. You can easily toggle features on or off, deactivate unused values, and customize the app's appearance and feedback to your preference. ## Version history (last 5 releases) ### 1.5.0 — 2025-06-09 New Features • Exposure Compensation has been added. You can now adjust exposure values from -2.0 to 2.0. • Exposure Compensation Feedback settings are now available. Choose your preferred feedback for the exposure compensation dial. • Screen Rotation has been added. The UI will now rotate with your device's orientation. • Screen Rotation settings are now available. You can toggle screen rotation on or off. • Full Coverage Preview Mode has been added. This mode displays the entire frame without cropping in the preview. • Preview Mode settings are now available. Choose between Full Screen (default) and Full Coverage. Improvements • Exposure Measurement logic has been improved. Enjoy more accurate and a wider range of exposure measurements. • Exposure Measurement responsiveness has been enhanced. Exposure calculations are now reflected more instantly. • Animations for exposure-related UI have been improved. • Layout for the Full Screen(default) Preview Mode has been refined. Bug Fixes • Fixed an issue where decimal input was not possible in certain languages/regions. ### 1.4.0 — 2024-11-06 - Configs & Customization Feature Added Unused values can be excluded from aperture, shutter speed, or ISO entries. Needed values can be added to aperture, shutter speed, or ISO entries. Haptic feedback can be selected for the aperture, shutter speed, or ISO dials. The shutter sound can be toggled on or off. The perforation can be customized. The film magazine can be customized. - Exposure Accuracy Improved The accuracy of exposure measurement has been slightly improved. - Dial Accuracy Improved The accuracy of the aperture, shutter speed, and ISO dials has been improved. - iPhone 16 Support The iPhone 16 camera is now officially supported. ### 1.3.1 — 2024-06-26 - [Bug fix] - Fixed an issue where the app would crash upon opening the log list. ### 1.3.0 — 2024-06-20 - [New Feature] - Now you can delete or modify logged entries and leave notes for each log! You can view your logged entries on a map. Rediscover memories from your film journey with illumeter! - [Improvements] - Titles have been added to the log list, showing location and time together. UI bugs that occasionally occurred during transitions using gestures in the log list have been fixed. ### 1.2.1 — 2024-03-19 - Bug fix: Add omitted localized strings including the app name "illumeter". ## Apps similar to illumeter | App | Rating | Price | Category | | --- | --- | --- | --- | | [Luxilux Light Meter](https://appshunter.io/ios/app/luxilux-light-meter/id1487384157) | 4.9 (72) | $5.99 | Photo & Video | | [Light Meter by WBPhoto](https://appshunter.io/ios/app/light-meter-by-wbphoto/id1524189195) | 3.7 (3) | $6.99 | Photo & Video | | [LightMeter35](https://appshunter.io/ios/app/lightmeter35/id1522046585) | 5.0 (6) | $3.99 | Photo & Video | | [Manual Camera, Pro DSLR \| RAW+](https://appshunter.io/ios/app/manual-camera-pro-dslr-raw-plus/id1152205153) | 4.4 (2,358) | Free | Photo & Video | | [Manual Camera – Focus, ISO, WB](https://appshunter.io/ios/app/manual-camera-focus-iso-wb/id1543743256) | 4.3 (357) | Free | Photo & Video | | [EXIF Viewer by Fluntro](https://appshunter.io/ios/app/exif-viewer-by-fluntro/id944118456) | 4.5 (867) | $2.99 | Photo & Video | ## More apps by Seunghun Yang - [SMDC](https://appshunter.io/ios/app/smdc/id1586945050) - [둘다](https://appshunter.io/ios/app/id1632731921) All apps by Seunghun Yang: https://appshunter.io/developer/1586944242 ## Related topics [illumeter](https://appshunter.io/ios/topics/illumeter) · [pentax](https://appshunter.io/ios/topics/pentax) · [lightmate](https://appshunter.io/ios/topics/lightmate) --- *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 2026-07-18.*