TransPeek vs Lux & Flicker Meter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TransPeek
Instantly translate any on-screen text in real-time with floating subtitles. Play games, watch videos, or browse websites in foreign languages without leaving the app. Also offers quick photo translation and saves your translation history.
- Real-time screen translation
- Floating subtitle window
- Quick photo translation
- Works with games, videos, and websites
- On-device text recognition
- Translation history
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Read any screen in your own language — games, videos, comics, chats and websites, without leaving the app you're in. TransPeek floats a small window over whatever you're doing, reads the text on screen and shows the translation right there. Text recognition and translation both run on your device. FLOATING WINDOW Drag the window over the text you want to read. It translates what sits just below it, sentence by sentence, with the original line above each translation, so you can read both at once. Move it and it follows along. RARE WORDS, MARKED FOR YOU Learning a language? TransPeek marks the less common words in each sentence and highlights the matching words in the translation, numbered so you can pair them up. Set your reader level for each language and it only marks what you're likely not to know yet. FIXED REGION For subtitles, game dialogue or speech bubbles that always appear in the same place: mark those areas once and TransPeek keeps translating them. The window takes the shape of what you marked — wide and short for a subtitle strip, tall for a column of bubbles. PHOTO TRANSLATION Take a photo or pick one from your library — menus, signs, letters, product labels — and translate the text in it. Photos never leave your device. SHORTCUTS, SIRI AND CONTROL CENTER Start the floating window or a fixed region from Control Center, Siri, Spotlight or the Shortcuts app. Pair "Take Screenshot" with "Translate Screenshot" to translate whatever is on screen with one tap; on iOS 26, with the language already downloaded, the result appears without leaving the app you're in. 20 LANGUAGES, ANY PAIR English, Simplified Chinese, Traditional Chinese, Japanese, Korean, French, German, Spanish, Portuguese (Brazil), Russian, Italian, Thai, Vietnamese, Arabic, Dutch, Hindi, Indonesian, Polish, Turkish and Ukrainian — translate between any two. Translation is powered by Apple's on-device engine; once a language is downloaded, it works offline. PRIVATE BY DESIGN No account, no cloud and no tracking. Your screen is processed on your iPhone or iPad and is never uploaded. MAKE IT YOURS Choose the window's shape, border colour and text theme. Every translation is kept in your history on this device, with stats for the week. PRICING Try everything free for 3 days. The trial starts with your first screen translation, not when you install. After that, a one-time purchase unlocks TransPeek Pro for good — no subscription. Pro owners can gift a friend a code to unlock Pro at a gift price. How to start: pick your languages, tap Start Floating Window, then choose TransPeek in the system's screen broadcast sheet. Switch to any app and the window comes with you.
Lux & Flicker Meter
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Light Meter Assistant is a utility app that turns your phone into a light environment tester. Whether you're choosing a desk lamp for your child, evaluating workstation lighting, or checking whether your screen or bedside lamp is emitting proper light, just open the app, point it at the light source, and get a readable light environment report in seconds. 【Core Detection Capabilities】 Flicker Detection: Captures brightness variations at high speed via the camera, performs spectrum analysis, and outputs flicker index, modulation depth, dominant frequency, and light environment risk level, revealing invisible light fluctuations to the naked eye. Illuminance Estimation: Estimates the ambient illuminance range based on scene brightness, telling you whether the current light is suitable for reading, working, or nighttime relaxation. Color Temperature Estimation: Identifies warm, neutral, or cool light tendencies to help you choose fixtures that better fit the scene. Comprehensive Light Environment Score: Combines flicker, illuminance, and color temperature metrics to give a holistic score from 0 to 100 along with actionable suggestions. 【Data Management & Tracking】 History records are automatically grouped by date, with support for tagging different light sources (desk lamp, living room ceiling light, bedroom night light, etc.) for easy categorization. Data dashboard aggregates the last 30 days of test data, presenting score trend curves, risk level distribution, and flicker index distribution for an intuitive view of light environment changes. Light source environment profiles build individual trend charts for each tag, enabling long-term tracking of the same lamp's performance. One‑tap export of PDF reports and CSV data for archiving, sharing, or discussion with family and friends. 【Thoughtful Details】 Smart eye care reminders: Customize rest intervals and daily reminder times to help you build healthy resting habits. Multi‑language support: Simplified Chinese, Traditional Chinese, English. Theme modes: Day, Night, and Follow System – freely switch among three appearances. Adjustable camera parameters: Preferred frame rate, measurement duration, and auto‑save can all be set as needed. All detection is performed locally, and data stays on your device – no upload to servers. 【Use Cases】 Quick on‑site screening before selecting desk lamps, floor lamps, or ceiling lights Evaluating whether lighting in studies, classrooms, or offices meets standards Families concerned about children's study environments and elderly living area lighting Users who care about screen flicker and the effect of nighttime light on sleep Advanced users who need to record and compare long‑term performance across multiple light sources 【How to Use】 Open the app and tap "Start Test" on the home page. Point the camera at the light source or screen you want to test. Keep it steady for a few seconds while the capture completes. Review the conclusion card, professional parameters, waveform chart, and spectrum graph. Add notes and light source tags to the record, or export a PDF report. Target Users: Parents concerned about their children's study light environment Office workers and students who spend long hours at desks, working or reading Consumers looking to buy desk lamps or screen bars Professionals such as interior designers and lighting consultants Photographers and video creators who demand high light quality Disclaimer: This app is a consumer‑grade light environment screening tool. Results are for reference only and cannot replace professional testing instruments. Illuminance estimation accuracy is approximately ±15‑20%, color temperature estimation accuracy is about ±5%, and it can detect periodic flicker with a modulation depth above 3%. Camera parameters vary by phone model, so results may differ. Take control of your light environment – make every lamp more trustworthy.
Screenshots
Verdict
The clearest difference is price: TransPeek at Free against Lux & Flicker Meter's $1.99. Lux & Flicker Meter's advantage is in-app purchases (none vs 1) and iOS requirement (16.0 vs 18.0). 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
TransPeek is free to download; Lux & Flicker Meter costs $1.99 up front. TransPeek sells 1 one-off in-app purchase. Lux & Flicker Meter asks for nothing beyond the download.
| Parameter | TransPeek | Lux & Flicker Meter |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.0 (4 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 5 days | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 30 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | 上海百隅信息科技有限公司 | 小燕 陈 |
In-app purchases
TransPeek
- TransPeek Pro$6.99
Lux & Flicker Meter
No in-app purchases
Questions
Is TransPeek free?
Is Lux & Flicker Meter free?
Do TransPeek or Lux & Flicker Meter have ads?
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