Light Lux Meter vs Sifty
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Light Lux Meter
This app helps photographers and videographers measure light levels for optimal exposure. It offers lux and foot-candle scales, and can calculate light ratios, serving as a convenient alternative to professional equipment for amateur use.
- Measures light in lux and foot-candles
- Calculates light ratio for photos
- Dual camera support
- Accurate algorithm
- New design
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Looking for a light meter? You have just found the best Light Meter app for iPhone. Controlling light is an essential skill for all photographers, videographers, digital filmmakers, both amateur and professional. Lux Light Meter will help you measure and control light level for the perfect picture exposure. Save time and money by getting our lux light meter app instead of expensive luminosity meters. The app support lux & foot-candle light scales. Get the rate light ratio for your photos. New features: - dual camera support - more accurate algorithm - new design Remember that Lux Light Meter is not a replacement for a professional device. It should be used for amateur purposes only.
Sifty
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Sifty uses AI to help you organize your photo library. It analyzes your photos and flags the ones you might want to remove — blurry shots, duplicates, and clutter. Keep what matters, remove what doesn't. How it works: 1. Sifty scans your photo library using AI 2. It learns your preferences as you give feedback 3. Flagged photos are presented for your review 4. You decide what stays and what goes 5. Deleted photos go to Recently Deleted (30-day recovery) Features: • AI-powered photo analysis using Google Gemini • Smart flagging of low-quality and unwanted images • Review and approve before anything is deleted • Learns your taste over time • Background processing — analyze while you do other things • Credits-based system with 500 free credits to start • 1 credit = 1 photo analyzed Your photos never leave your device for storage. Images are analyzed through a secure API and immediately discarded after processing.
Screenshots
Verdict
The clearest difference is price: Sifty at Free against Light Lux Meter's $2.99. Sifty also leads on update cadence (every 5 weeks vs every 3 months). Light Lux Meter's advantage is in-app purchases (none vs 4) and iOS requirement (10.0 vs 15.0). On ads and device support 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
Sifty is free to download; Light Lux Meter costs $2.99 up front. Sifty sells 4 one-off in-app purchases. Light Lux Meter asks for nothing beyond the download.
Light Lux Meter ships an update every 3 months, Sifty every 5 weeks. The most recent releases landed on October 21, 2026 and October 7, 2026 respectively.
| Parameter | Light Lux Meter | Sifty |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.0 (55 ratings) — better | — |
| Positive reviews | 11.5% of reviews | — |
| Number of ratings | 55 — better | — |
| Update frequency | Every 3 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 30 MB | 66 MB |
| Age rating | 4+ | 4+ |
| Developer | Aexol Studio | Mohammed Junaid |
In-app purchases
Light Lux Meter
No in-app purchases
Sifty
- Starter Pack$0.99
- 5000 Images$0.99
- 10000 images$2.99
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- Sifty Pro Pack$5.99
