Luminometer vs TimeTilly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Luminometer
Transform your device into a professional light meter to measure luminosity in lux and foot-candles. Achieve optimal illumination for any space, from greenhouses to workspaces, ensuring comfort and preventing glare. Calibrated with reference equipment for precise and reliable readings.
- Measures lux and foot-candle units
- Internal Exposure Compensation for accuracy
- Camera view for measured area
- Calibrated with reference equipment
- Versatile for various lighting conditions
- Helps set optimal illumination levels
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Luminometer is an exceptional app that is designed to transform your iPhone or iPad into a professional and user-friendly light meter. It is based on Internal Exposure Compensation, which makes it the most accurate lux meter available on the market today. With Luminometer, you can easily measure the lux of any light source in both lx and foot-candle units without having to spend any money on professional equipment. One of the standout features of Luminometer is the ability to swiftly and efficiently set up your greenhouse, living room, workplace, study room, or any other area with the perfect level of illumination. Our app ensures that you achieve a well-lit environment that is comfortable to work in without causing any unnecessary glare. The app is incredibly versatile, making it consistent for use in various lighting conditions such as plant lighting, household lighting, workstation lighting, and mood lighting. No matter the type of lighting you need to measure, Luminometer is up to the task. With Luminometer, you get a comprehensive set of features that enable you to measure lux with ease. The camera view feature allows you to view the area being measured, making it even more user-friendly. The app is calibrated using top reference equipment, ensuring that your measurements are always precise and reliable. Whether you're dealing with ambient indoor and outdoor lighting or task and accent lighting, Luminometer has you covered. You can trust that our app is accurate and reliable, thanks to our calibration process, which is done using the best reference equipment available. In conclusion, if you're looking for an accurate, versatile, and easy-to-use light meter app, then Luminometer is the perfect solution for you. Get started today and experience the benefits of using our app to achieve the perfect level of illumination for any environment. Terms and pricing: Our weekly subscription costs $3.99 USD/week and provides you with unlimited access to premium features, as long as your subscription remains active. The subscription automatically renews, and payment will be charged to your iTunes account when you confirm the initial purchase. If you do not wish to renew your subscription, you may turn off the auto-renewal option in your Account Settings at least 24-hours before the current subscription period ends. For more information, please refer to our terms of service available at https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ or privacy policy on https://27groupts.notion.site/Privacy-Policy-for-Luminometer-iOS-App-68f7e665c2924108a9111eae825e53c7
TimeTilly
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TimeTilly is designed to PUT YOU BACK IN CONTROL. Set daily allowances, start a simple timer, add or deduct minutes, reward good choices, and keep everyone consistent across TV, tablets, games, and phones — without complicated setup. TimeTilly is not an automatic “Big Brother” style system, and it doesn't hand tasks over to AI. It is a practical tool for parents who want screen time to feel less random, less reactive, and fairer. Created by parents for parents, TimeTilly is a practical solution to make screen time work. For you and your children. ◆ WHY PARENTS USE TIMETILLY ◆ • Set daily screen time limits • Simple to use timers to keep track of screen time across all devices • Add extra minutes as a reward for helpful behaviour • Deduct minutes when boundaries are tested • Manage screen time for individual children or groups of children • Create different routines for weekdays, weekends and family schedules • Make manual adjustments when real life does not go exactly to plan • Keep parents in control of screen time decisions ◆ STANDARD FEATURES (FREE VERSION) ◆ TimeTilly includes practical tools to help families get started with more consistent screen time management: • Set screen time limits • Start, pause and adjust daily timers • Add or deduct time in custom increments • Reward helpful behaviour with extra minutes • Reduce screen time when boundaries are pushed • Manage children individually or as a group • Create custom schedules for different days of the week • Make time adjustments on the fly The free version includes ads but for a small one-time fee you can remove the ads forever. ◆ PREMIUM FEATURES (CHECK OUT OUR FREE TRIAL) ◆ Upgrade to TimeTilly Premium for a more flexible and meaningful family screen-time solution: • Share timers with your partner so everyone is on the same page • Set up multiple timers, e.g. for different types of media or different groups of people • Get monthly and yearly usage insights • Break up daily allowances into multiple intervals for a more granular screen time control on the day • Keep track of unused screen time and add ‘Stars’ for extra encouragement • Export timer reports as CSV files • And of course – get an ad-free experience! Download TimeTilly today and start making screen time work better for your family.
Screenshots
Verdict
The clearest difference is iOS requirement: TimeTilly at 13.0 against Luminometer's 16.6. On price, update cadence, 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. Luminometer sells 2 in-app purchases, starting at $2.99 per 7 days and TimeTilly sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Luminometer ships an update every 2 months, TimeTilly monthly. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.
| Parameter | Luminometer | TimeTilly |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (16 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 16 — better | — |
| Update frequency | Every 2 months | Monthly — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 64 MB |
| Age rating | 4+ | 4+ |
| Developer | 27GROUP | The Trustee for Hemispheres |
In-app purchases
Luminometer
- Weekly$2.997 Days
- Lifetime$9.99
TimeTilly
- Premium Features14 Days trial$4.991 Month
- Premium Features1 Year trial$49.991 Year
- Remove Ads$3.99
Questions
Is Luminometer free?
Is TimeTilly free?
Do Luminometer or TimeTilly have ads?
Which is updated more often, Luminometer or TimeTilly?
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