Comparison

Ruler vs Brook Controller Center

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

Head to head
About

Ruler

Features
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Need to measure something right now and there's no ruler in sight? Your phone already has one. Ruler Toolkit turns your phone into a pocket measuring kit: a card-calibrated on-screen ruler, a protractor, a bubble level, a compass, camera measure and a handful of sensor tools — all in one lightweight, sign-up-free app that gets straight to the point. WHAT YOU GET On-screen ruler — measure in cm, mm or inches, with a 2-point mode and adjustable zero Real card calibration — fit a standard card (credit-card / ISO size) to the outline and correct your screen's true DPI, because every device is different Protractor — measure angles on screen with two arms, complement readout and automatic snapping to common angles Bubble level — surface mode (phone flat) and edge mode (long edge against the piece), with zero and hold Compass — find north with figure-8 calibration; keep the phone away from metal and magnets Camera measure — point at the floor or a wall and measure real-world distances in AR (needs an ARCore-certified device) Metal detector — spot ferrous metal by the change it makes in the magnetic field Light meter — read ambient light in lux, from dark to full sunlight Altimeter — set a zero point and read your relative height gain from barometric pressure Vibrometer — rest the phone on a surface and monitor its vibration Flashlight — instant screen light at a tap Saved measurements — keep lengths, angles and levels with a note ("shelf width"), filter, search and export 5 languages — English, Portuguese, Spanish, French and German CALIBRATE ONCE, TRUST IT AFTER An uncalibrated screen ruler is just a guess: the real size of a centimeter changes from device to device. Card calibration takes seconds — drag the handle until the outline matches a real card, and from then on your on-screen measurements reflect your actual screen. MADE FOR EVERYDAY JOBS Assembling furniture, hanging a picture, checking an angle, leveling a shelf, finding north at the campsite: the small measurements of daily life, solved without digging out the toolbox. AN HONEST NOTE ON SENSORS Some tools rely on hardware your phone may or may not have. The compass and metal detector need a magnetometer, the level and vibrometer use the accelerometer, the altimeter needs a barometer, the light meter needs an ambient-light sensor, and camera measure needs an ARCore-certified device. If a sensor is missing, that tool simply stays out of your way — the ruler, protractor and flashlight work on virtually any phone. SIMPLE AND PRIVATE No sign-up and no account required. Your saved measurements and calibration stay on your device; optional Google backup is there only if you want to restore on a new phone. Erase everything anytime in Settings. Keep a whole toolbox in your pocket — download Ruler Toolkit.

About

Brook Controller Center

Features
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Please Note: This version of the app only supports Brook StarRay with firmware version V 1.2.0.7 or higher. Please ensure your controller is updated before using. Brook Controller Center is designed primarily for the Brook StarRay controller. Connect your controller via Bluetooth to quickly adjust settings and update its firmware. Key features: • Customize button mappings • Record and edit macros • Configure turbo modes and speed • Adjust joystick response curves and dead zones • Update controller firmware • View app, firmware, and brand information Some features may vary depending on the controller model and firmware version.

Screenshots

Ruler3 screens
Brook Controller Center4 screens

Verdict

The call

The clearest difference is ads: Brook Controller Center at none against Ruler's shown. Brook Controller Center also leads on device support (3 vs 1). On price, update cadence, in-app purchases and iOS requirement 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Ruler ships an update every 2 weeks, Brook Controller Center fortnightly. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

Scorecard2 real differences ¡ 4 level
Ruler versus Brook Controller Center: the parameters behind the verdict, then further details
ParameterRulerBrook Controller Center
PriceFreeFree
Update frequencyEvery 2 weeks — betterFortnightly
AdsYesNo — better
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.415.6 — better
Further details — not scored
Size87 MB11 MB
Age rating4+4+
DeveloperMOODLR DESENVOLVIMENTO DIGITAL LTDAZeroplus Technology Co, Ltd.

In-app purchases

None

Ruler

No in-app purchases

None

Brook Controller Center

No in-app purchases

Questions

Is Ruler free?
Ruler is free to download, with no in-app purchases.
Is Brook Controller Center free?
Brook Controller Center is free to download, with no in-app purchases.
Do Ruler or Brook Controller Center have ads?
Ruler shows ads; Brook Controller Center does not.
Which is updated more often, Ruler or Brook Controller Center?
Ruler ships an update every 2 weeks, and Brook Controller Center fortnightly. Most recently, Ruler was updated on October 14, 2026 and Brook Controller Center on October 11, 2026.

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