Comparison

Master It vs Light Meter

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Master It

Instantly create and print master key systems without complex calculations. Supports various keyways and pin systems, with options for randomization and secure saving. Ideal for on-the-fly key management.

Highlights
  • Instant master key system creation
  • Zero math required
  • Supports multiple keyways
  • Randomize TMK generation
  • Print, email, or save systems
  • 5 or 6 pin system support
  • Shake to lock/unlock functions
Features
Currently charting
Read full description

***FEATURED IN KEYNOTES MAGAZINE*** Create and print master key systems in an instant with Master It. Master It is perfect for small or on-the-fly systems. Create a master key matrix immediately with zero math and zero worries of cross-keying. Either enter in your own TMK or tap Randomize to create a complete master key system containing a single TMK, a single sub master, and up to 64 change keys. Each output delivers a fixed sub master and set of change keys. Master It is built to create a system immediately to print and keep in your records at your shop. It is capable of saving and reloading one project at a time. The goal with Master It is to create and AirPrint a system in an instant. If on the road when printing isn't available, email and save features are secondary backups prior to printing. Email is also ideal when a printer is not AirPrint compatible. Currently supports: Kwikset .023" Corbin Russwin .028" Weiser / Falcon .018" Ilco-Unican .018" Schlage .015" Arrow .014" Sargent .0125" & .020" Corbin .014" Obeys MACS rules for each selected system. AirPrint, Email, or Save any system created. Create 5 or 6 pin systems. Randomize feature to always generate a completely random TMK every time. Use the two filters to restrict the TMK to only shallow depths, or to always include the shallowest and deepest cuts. Tap anywhere on the matrix to select or deselect a bitting for the key chart. Shake your iDevice to lock the primary functions on the main screen. This is to prevent unwanted changes (i.e. accidentally tapping Reset). To unlock, just shake again. All change keys can be individually identified. Use the Project Name / Keyway box for temporary saving information. The actual printout will allow you to write in the business name, personal name, address, keyway, and phone number conveniently. After printing, the system can be continued manually on paper. Additionally, you can tap on each change key to display the pinning. Compatibility: All iPhone, iPad, iPod Touch types and generations with a minimum iOS version of 12.0 Found a bug? Something not working? Have a suggestion? Feel free to contact me via email: farren@phoxlocks.com

About

Light Meter

This application acts as a portable light meter, allowing users to measure light intensity in lux and foot candles. It offers real-time readings, a log library for saving measurements, and the ability to calibrate with professional devices for enhanced accuracy. The app supports both front and rear cameras and saves scene images.

Highlights
  • Real-time light intensity measurement
  • Lux and foot candle readings
  • Saveable log library
  • Calibration with professional illuminometer
  • Front and rear camera support
  • Scene image saving
Features
Read full description

Light Meter - Lux and foot candle measurement tool in your pocket! Light Meter for Film Photography. Light meter in your pocket! The only app you really need to measure light intensity. You can calibrated with professional Illuminometer. Features: - Exclusive simplicity and convenience of use with unique and attractive design. - Real-time measurements. - Result are save-able into log library. - All result are comparable with Variable Lux, foot candle, ISO and Date in log library. - Scene Image are save-able into camera-roll - Front and rear camera supported. - Lux and foot candle measurement. - Option to Calibrated with light sensitivity. To ensure the accuracy of measurements. you can calibrated with professional high-precision illuminometer. Note : Light Meter app is not a replacement for a professional device and should be used for private purposes only. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

Screenshots

Master It4 screens
Light Meter4 screens

Verdict

The call

The clearest difference is rating: Light Meter at 4.2 against Master It's 3.7. Light Meter also leads on price ($2.99 vs $6.99). Master It's advantage is update cadence (every 2 months vs every 48 months) and review sentiment (76% vs 50%). On ads, in-app purchases, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Master It costs $6.99 and Light Meter $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Light Meter holds the better App Store score, 4.2 against 3.7. Both are backed by a comparable volume of ratings — 18 and 5 respectively. Written reviews complicate that: 76% of Master It's written reviews are positive against 50% of Light Meter's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Master It ships an update every 2 months, Light Meter every 48 months. The most recent releases landed on September 7, 2026 and September 23, 2026 respectively.

Scorecard6 real differences · 5 level
Master It versus Light Meter: the parameters behind the verdict, then further details
ParameterMaster ItLight Meter
Price$6.99$2.99 — better
Rating3.7 (18 ratings)4.2 (5 ratings) — better
Positive reviews76.2% of reviews — better50.0% of reviews
Number of ratings18 — better5
Update frequencyEvery 2 months — betterEvery 48 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank#198 — better—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better13
Further details — not scored
Size6 MB1 MB
Age rating4+4+
DeveloperFarren DomeniciNitrio

Customer experience

Master It

All ratings18 ratings
Positive61.1%
Neutral22.2%
Negative16.7%
Written reviews21 reviews
Positive76.2%
Neutral14.3%
Negative9.5%

Light Meter

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

Master It

No in-app purchases

None

Light Meter

No in-app purchases

Questions

Is Master It free?
Master It costs $6.99, with no in-app purchases.
Is Light Meter free?
Light Meter costs $2.99, with no in-app purchases.
Which has better reviews, Master It or Light Meter?
Light Meter is rated higher. Master It averages 3.7 out of 5 from 18 ratings, while Light Meter averages 4.2 from 5 ratings.
Do Master It or Light Meter have ads?
Neither Master It nor Light Meter shows ads.
Which is updated more often, Master It or Light Meter?
Master It ships an update every 2 months, and Light Meter every 48 months. Most recently, Master It was updated on September 7, 2026 and Light Meter on September 23, 2026.

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