James Owl Calc vs EV+
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
James Owl Calc
This tool helps landscape photographers calculate precise camera settings for long exposure shots. It recommends ND filter combinations, aperture, and ISO based on your current settings and desired effect. Features include tutorials and camera-specific adjustments.
- Precise exposure calculations for ND filters
- Reverse calculation mode
- Smart adaptive technology for light changes
- Built-in countdown timer with audio alerts
- Camera-specific settings
- Long exposure technique tutorials
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James' Long Exposure Calculator is the ultimate companion for landscape photographers seeking to master the art of long exposure photography. Designed by professional photographer James Yu, this powerful tool eliminates guesswork and transforms your creative vision into precise camera settings. Whether you're capturing silky smooth waterfalls, dreamy misty seascapes, or ethereal cloud streaks, this app delivers professional-grade calculations tailored to your specific equipment. Simply input your current settings and desired effect, and the advanced algorithm will recommend the perfect ND filter combination, aperture, and ISO values to achieve stunning results every time. Key features include: Precise exposure calculations for any ND filter strength Reverse calculation mode - start with your desired exposure time Smart adaptive technology that accounts for changing light conditions Built-in countdown timer with audio alerts Camera-specific settings for maximum accuracy Detailed tutorials for various long exposure techniques Clean, intuitive interface designed for field use The app supports all major camera brands and ND filter types, from ND8 to ND64000. Take your long exposure photography to the next level with James' professional insights and techniques refined through years of experience. Whether you're a beginner exploring long exposure or a seasoned professional seeking efficiency, James' Long Exposure Calculator provides the precision and guidance you need to create breathtaking images that stand out from the crowd.
EV+
A simple light meter for photographers to measure EV and calculate necessary camera settings like ISO, shutter speed, and aperture. It provides essential exposure information for better photography.
- Measure EV
- Calculate ISO
- Calculate Shutter Speed
- Calculate Aperture
- Minimalist interface
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Minimal light meter for photographers. Measure EV and calculate ISO, shutter, and aperture.
Screenshots
Verdict
The clearest difference is ratings volume: James Owl Calc at 4 against EV+'s 1. EV+'s advantage is iOS requirement (13.0 vs 16.0). On price, rating, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for James Owl Calc against 5.0 for EV+. Both are backed by a comparable volume of ratings — 4 and 1 respectively.
| Parameter | James Owl Calc | EV+ |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | 1 |
| Update frequency | Weekly | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 32 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | James Zhen Yu | Ben Nguyen |
Customer experience
James Owl Calc
EV+
In-app purchases
James Owl Calc
No in-app purchases
EV+
No in-app purchases









