# Stops+ — Precise Camera Attribute Calc > Precise camera exposure compensation calculator for artists and technologists. (iPhone/iPad app by Purpl Pro.) - Source: https://appshunter.io/ios/app/stops-plus/id6538719303 (this page in markdown: same URL + `.md`) - Developer: [Purpl Pro](https://appshunter.io/developer/1662309039) - Category: Photo & Video, Utilities - Price: Free with in-app purchases - Rating: 4.50/5 from 2 App Store ratings - Age rating: 9+ - Requires: iOS 18.0 · 30 MB - Languages: American English - Released: 2025-01-09 - Data updated: 2026-06-01 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/stops-plus/id6538719303/reviews.md ## What is Stops+? Designed for artists/technologists who aspire to creative mastery with absolute precision. Say goodbye to guesswork on/off sets or even labs. • 'Stops+' helps calculate compensation for exposure changes to Aperture, FPS, Shutter Angle, Shutter Speed and ISO with super-fine increments. • You can make adjustments as small as 1/32 stop for a range up to 28 stops. • With DIFF Mode - you can also now get the stops difference between two attribute values instantly. >> HOW PRECISE? • Quite extensively. Nothing is hardcoded, and it always calculates instantly even for the tiniest changes. The technology behind, it is similar to what camera manufacturers use to design their high-end cameras. Though tuned for fine results, it’s still quite adaptable to your needs and remembers your preferences. >> USE CASES: • DOUBLE-CHECK your compensated values on set. • PRE-PLAN your shoots. For example… whether you really need high power lighting equipment based on your camera’s available dynamic range. You can test-out varied scenarios compensating for exposure in prep itself. • Play around and TRAIN yourself to learn the in-between values. For example… did you know, If you compensate for -2/3 stops on shutter angle of 172.8°, it is 108.9°?! Neat. >> HOW IT WORKS: 1. Simple. First, pick your shoot mode - i.e., Video or Photo mode. 2. Then just select what you'd like to adjust like Aperture, FPS, Shutter angle, Shutter speed or ISO - based on the shoot mode selected. PLUS Mode: 3. Next, set the precision for how finely you’d like to increment the exposure such as 1/3rd, 1/8th etc... 4. Set your current value in the picker you want to compensate for. 5. Additionally, if you’d like to pre-compensate for any lens filters (such as ND, PL , Artistic Filters etc…) - now you can stack up to 2 filters. 6. NEW in 1.4: For ISO - you can also pre-compensate like the PROs to calculate ETTR/ ETTL now i.e, ‘what ISO to shoot at’ Vs ‘what ISO to expose for’. 7. Finally, just slide your exposure slider and watch the magic happen. DIFF Mode: 1. Just flick those two fancy wheels to get the ‘stops difference’ instantly. Feel free to play around. >> VALUE ADDED FEATURES --- Custom Compensation Settings Customize any of the parameters below: • Aperture: Option to set your lens’s min & max aperture. • FPS: Option to select even high or ultra-high frame rates, up to a whopping 1,000,000 frames per second. • ISO: Option to select full or 1/3rd increments - ranging from ISO 50 to 819,200. • Shutter Angle: Option to set your min & max angles (from 1 to 360) • Shutter Speed: Option to set your min & max speed (from 1/32000 to 30 sec) • Lens Filters: NDs usually have varied nomenclatures in the industry like ND0.3, ND2 or ND 1x - you now have the option to select your preferred naming style. Similarly, PL also has a naming style for convenience here, though not industry standard. --- Super Fine Increments • Set your preference for fine exposure increments from 1 full stop all the way upto 1/32 stop. --- Precise Decimal Digits • Go beyond or below the industry standard to explore compensated values with more or less decimal digits. --- Extended Slider Range • With an extended range beyond today’s cameras abilities - discover compensated results even for futuristic shooting scenarios. --- Personalized Themes + Dark Mode • Choose your preferred theme and let your personality shine. --- Themed App Icons • Showcase your inner theme even outside with a theme-paired app icon style. --- iPadOS ready Do the same & much more on iPads with: • multi-window support like Slide Over, Split View etc…. • PRO Tip: You can also customize themes individually for each window separately. • NEW in 1.4: iPadOS also gets the ‘swipe to switch’ camera attributes ---------- Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Key features - Precise exposure compensation calculation - Adjustments in 1/32 stop increments - DIFF Mode for instant attribute differences - Lens filter compensation (up to 2 filters) - Customizable parameter settings - ETTR/ETTL ISO calculation ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Plus | $5.99 | per year | | Plus | $1.99 | per month | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Plus Lifetime | $24.99 | one-time | | Lab Super Precision | $4.99 | one-time | | Exposure Compensate | $4.99 | one-time | ## Frequently asked questions about Stops+ ### What is Stops+ used for? Stops+ is used to precisely calculate compensation for exposure changes across aperture, FPS, shutter speed, and ISO. It helps users avoid guesswork on set or in labs by providing fine-tuned adjustments and instant attribute differences. ### How precise are the calculations in Stops+? Stops+ offers super-fine increments, allowing adjustments as small as 1/32 of a stop, with a range up to 28 stops. The technology is similar to what camera manufacturers use for high-end cameras, ensuring instant and accurate calculations. ### Can Stops+ help with pre-planning shoots? Yes, Stops+ can be used to pre-plan shoots by testing various scenarios and compensating for exposure. For example, you can determine if high-power lighting equipment is necessary based on your camera's dynamic range. ### Does Stops+ support lens filters? Yes, Stops+ allows you to pre-compensate for lens filters such as ND and PL filters. You can stack up to two filters for accurate exposure calculations. ### What are the subscription options for Stops+? Stops+ offers a 'Plus' subscription at $1.99 per month or $5.99 per year, with a 7-day free trial for the annual plan. ### Is Stops+ available on all devices? Stops+ is designed for iOS devices, specifically supporting iPhones and iPads. ### How often is Stops+ updated? The latest version, 1.4, was released on February 20, 2026, indicating active development and updates for the application. ### What is the age rating for Stops+? Stops+ has an age rating of 9+, making it suitable for users aged 9 and above. ## Version history (last 5 releases) ### 1.4 — 2026-02-20 >> NEW: • ETTR/ ETTL ‣ Shoot a clean image like the PROs by pre-setting your ISO goals • Plus LIFETIME ‣ ‘One time purchase’ option to gain forever access to all ‘Plus(Y) features’ • Dynamic Theme ‣ Auto-cycles theme to adapt to selected camera attribute • Swipe Up/Down ‣ You can now swipe up, down, left or right - to instantly get to where you wanna go • ‘Orange Rise’ Theme >> PERFORMANCE: • 4x faster load times • Advanced optimizations behind the hood for a snappier performance inspite of compute intensive feature additions >> UPDATE: • Sectioned Long Pickers ‣ Extra long picker menus like FPS, Lens Filters etc… now presented in a more user friendly way categorized in sections • Some fixes & tweaks across the app ### 1.3 — 2025-09-20 NEW: • hello ‘Liquid Glass’ ‣ Ready for ‘OS 26’ • All NEW Redesign ‣ with fresh backgrounds & updated app icons ‣ adapted to compliment 'Liquid Glass' elements • Night Mode ‣ Airplane cockpit inspired 'deep red hue' instrument lighting - now applies appwide as a theme overlay with just a toggle away • 'Purpl Royale' Theme UPDATE: • Consistent performance with latest OS 26 tune-ups under the hood ### 1.2 — 2025-08-01 NEW: • DIFF Mode ‣ You can now get the ‘stops difference’ between any two values of the same attribute instantly, just with a flick of those wheels. • 40+ Lens Filters added ‣ Over 40 new lens filters added with support for some fractional NDs such as ND0.1, ND0.2, ND0.4 etc… ‣ Added some fixed stops PLs such as ‘1 stop PL’ or ‘2 stop PL’ ‣ NEW Artistic Filters such as Pro-Mist, color filters etc… UPDATE: • Quick Access ‣ Picker precisions for Aperture & ISO such as (Full/ One-Thirds etc…) now available within the ‘attribute selector’ menu itself. • Some minor optimisations for a smoother performance ### 1.1 — 2025-06-27 NEW: • 'Dual Lens Filters Stack' pre-compensation ‣ meaning you can stack unto 2 lens filters to compensate for your camera attributes even before any EV slider changes ‣ ND/PL Filter - can also choose naming style (such as... ND0.3 or ND2 or ND 1x) • 'Set on Camera' result ‣ as opposed to the previous 'Direct Math' calculation ‣ this allows you to now obtain the exact attribute result value to ‘Set on Camera’ • Remembers your last setting ‣ continue where you left off, your recent selections are now automatically saved UPDATE: • Performance Boost ‣ Improved performance after some important optimizations under the hood • Design Tweaks ‣ Fresh paint touch-up of themes with adaptive vibrancy + some redesigned UI components for a simpler look • Some minor bug fixes across the app ### 1.0.2 — 2025-02-28 Minor bug fixes for consistent performance ## Related topics [interface fze](https://appshunter.io/ios/topics/interface-fze) --- *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 2026-06-01.*