Stops+
Purpl Pro Photo & Video iPhoneiPadiPod touch
Stops+ is a free Photo & Video app for iPhone and iPad by Purpl Pro. Rated 4.5/5 from 2 ratings. Requires iOS 18.0. Updated February 20, 2026.
- Rating
- 4.5
- 2 ratings
- Price
- Free
- on the App Store
- Size
- 30 MB
- Age 9+
- Updated
- Feb 20
- 2026 · v1.4
Screenshots
About 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/
What’s new
Version 1.4 · Updated February 20, 2026
>> 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
App privacy
The developer, Purpl Pro, reported these privacy practices to Apple.
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Usage Data: Product Interaction
Used for: Analytics
Alternatives to Stops+
Looking for apps like Stops+? Here are 6 similar apps on the App Store. The highest rated is Lighting Ratio (5.0/5), and all 6 are free to download.
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Luma Calc
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Photographer’s Companion
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ExposureLab: ND & Golden Hour
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Lighting Ratio
5.0
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Color Grading - Färg
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Honesmith Optics: RAW Camera
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Stops+ | 4.5 / 5 (2 ratings) | Free | February 20, 2026 | |
| Luma Calc | – | Free | Mar 24, 2026 | Compare |
| Photographer’s Companion | – | Free | Feb 10, 2026 | Compare |
| ExposureLab: ND & Golden Hour | – | Free | Oct 21, 2026 | Compare |
| Lighting Ratio | 5.0 / 5 (3) | Free | Feb 4, 2026 | Compare |
| Color Grading - Färg | – | Free | Aug 31, 2026 | Compare |
| Honesmith Optics: RAW Camera | – | Free | Sep 10, 2026 | Compare |
Compare Stops+ with the top alternatives: ratings, updates, ASO score and keyword gaps →