Authenticator App vs Lux Light Meter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Authenticator App
This app generates secure, offline two-factor authentication codes for all your major online accounts. It offers iCloud sync for Apple devices and allows for easy organization and deletion of codes. Upgrade for unlimited accounts and advanced categorization.
- Supports major platforms (Google, Instagram, Facebook, GitHub)
- Import 2FA codes from screenshots
- iCloud Sync across Apple devices
- Organize codes into categories
- Private and offline code storage
- Generates TOTP codes securely
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Key Features: - Supports all major platforms – Seamlessly works with Google, Instagram, Facebook, GitHub, and others. - Scan QR from image – Easily import 2FA codes from screenshots or saved photos. - iCloud Sync – Securely sync your 2FA codes across all your Apple devices. - Organize your codes – Sort accounts into categories and keep everything tidy. - Swipe to delete – Clean up unused codes with a quick swipe. - Private & offline – Your codes are stored locally on your device — never uploaded. - Built for simplicity, speed, and security, Keyzy Authenticator generates TOTP codes safely and offline. Unlock More Power: Add up to 2 accounts for free. Upgrade with a one-time purchase to unlock unlimited accounts and organize them into categories. Whether you’re a developer, social media user, or just someone who cares about account security, Keyzy Authenticator: 2fa is the must-have tool to keep your digital life protected. Privacy Policy: https://sites.google.com/view/2facodeauthenticator-privacy Apple EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Lux Light Meter
Measure ambient light levels with your iPhone. Get real-time lux and foot-candle readings, with specialized modes for photography and plant care. Track light history and calibrate for accuracy.
- Ambient light metering (lux/fc)
- Photography exposure suggestions
- Plant light (PPFD/DLI) estimation
- Continuous measurement and history
- Optional meter calibration
- Privacy-friendly local storage
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Lux Light Meter: Illuminance A practical lux and illuminance meter for iPhone. Measure ambient light in seconds, check if a room is bright enough for study, work, or home use, and get helpful exposure and plant-lighting guidance when you need it. Core metering works offline. Key Features: Ambient light metering - Live lux / fc readings with scene targets that tell you if the light is too dim, about right, or too bright — plus simple tips to adjust Photography mode (Pro) - Aperture- or shutter-priority suggestions with ISO and exposure compensation so you can dial in exposure faster Plant mode (Pro) - Estimate PPFD and DLI for common houseplants, with light source and daily photoperiod options Continuous measure & history - Save single readings, track how light changes over time, and review min, average, and max values Optional calibration - Fine-tune against a trusted meter; Pro saves separate factors for the front and rear cameras Units & privacy-friendly storage - Switch between lux and fc; your measurements stay on your device How to Use: Open the app, allow camera access, and point your iPhone at the area you want to measure. Switch between Environment, Photography, and Plant modes, then save a reading or run a continuous measurement when you need a longer sample. Subscription Options: * Weekly and yearly subscriptions, plus a lifetime purchase * Payment will be charged to your Apple ID account * Subscriptions renew automatically within 24 hours before the current period ends * Manage or cancel anytime in your Account Settings Clearer readings. Better light decisions. Terms of Use: https://lightmeter.xzonesoft.com/terms.html Privacy Policy: https://lightmeter.xzonesoft.com/privacy.html Contact Us: support@xzonesoft.com
Screenshots
Verdict
Authenticator App and Lux Light Meter are too close to call on the numbers: across 9 compared parameters — price, rating, ratings volume and update cadence among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Authenticator App sells 3 in-app purchases, starting at $3.99 per month and Lux Light Meter sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Authenticator App against 5.0 for Lux Light Meter. Both are backed by a comparable volume of ratings — 2 and 5 respectively.
Authenticator App ships an update every 2 weeks, Lux Light Meter fortnightly. The most recent releases landed on September 23, 2026 and October 8, 2026 respectively.
| Parameter | Authenticator App | Lux Light Meter |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (5 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 | 5 — better |
| Update frequency | Every 2 weeks — better | Fortnightly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 17 — better |
| Further details — not scored | ||
| Size | 7 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | RETRYTECH LLP | 灿耿 陈 |
Customer experience
Authenticator App
Lux Light Meter
In-app purchases
Authenticator App
- Monthly$3.991 Month
- Yearly3 Days trial$12.991 Year
- Lifetime$24.99
Lux Light Meter
- Weekly Access$1.997 Days
- Annual Subscription$7.991 Year
- Lifetime Access$4.99
Questions
Is Authenticator App free?
Is Lux Light Meter free?
Which has better reviews, Authenticator App or Lux Light Meter?
Do Authenticator App or Lux Light Meter have ads?
Which is updated more often, Authenticator App or Lux Light Meter?
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