Lighting Ratio vs Silverlog Scan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lighting Ratio
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Lighting Ratios makes exposure calculations quick for photography and film lighting. • Calculate fill or background stops from any key light value • Enter key and fill stops to instantly get contrast ratios • Clear on-screen explanations with step-by-step math
Silverlog Scan
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Silverlog Scan calculates the scanning resolution (DPI) needed to achieve your desired print size and quality from your film format. HOW IT WORKS Select your film format (35mm, 120, 4x5, etc.), choose a print size and output quality, and see the minimum scanning DPI required. The calculator accounts for the enlargement factor from negative to print. FEATURES • All common film formats (35mm, 6x4.5, 6x6, 6x7, 6x9, 4x5, 8x10) • 13 standard print sizes from 4×6" to 40×60" (inches) • Output quality from 150 to 400 DPI • Required DPI calculation • Output resolution in megapixels and pixel dimensions • Estimated 8-bit and 16-bit file sizes • Quality indicators • Works offline — no internet connection needed • Clean, focused interface • Dark mode support USEFUL FOR • Setting up flatbed scanner resolution • DSLR scanning resolution planning • Understanding how much detail your film format captures • Choosing the right scanner for your print size needs • Optimising scan time vs quality tradeoffs Part of the Silverlog photography toolkit. No account required. No data collected.
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Verdict
The clearest difference is in-app purchases: Lighting Ratio at none against Silverlog Scan's 5. Lighting Ratio also leads on device support (4 vs 2). Silverlog Scan's advantage is update cadence (every 4 days vs every 4 months). On price, ads and iOS requirement 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. Silverlog Scan sells 5 one-off in-app purchases. Lighting Ratio asks for nothing beyond the download.
Lighting Ratio ships an update every 4 months, Silverlog Scan every 4 days. Both last shipped on October 5, 2026.
| Parameter | Lighting Ratio | Silverlog Scan |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, Apple Watch, Vision Pro — better | iPhone, iPad |
| Requires iOS | 16.5 | 16.4 — better |
| Further details — not scored | ||
| Size | 2 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | Davin Nguyen | Simon Westgate |
In-app purchases
Lighting Ratio
No in-app purchases
Silverlog Scan
- Nice One$0.99
- Legend$2.99
- Absolute Hero$4.99
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- Guardian Angel$9.99
- Actual Saint$29.99









