Transferidor BLA vs Protractor, Level
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Transferidor BLA
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Measures any angle. The iPhone becomes a protractor. You rest it against a surface, a wall, a ramp, and read the large angle in BLA typography. Tap to calibrate, hold mode to freeze the reading. The free protractors on the App Store are throwaway utilities, full of ads, with garish icons. Transferidor BLA is the opposite. Editorial typography, Areia BLA background, large angle display in whole degrees, arc with fine marks every 5 degrees and long marks every 15. WHAT IT'S FOR When the problem is the tilt: the accessibility ramp at the store (code says at most 8.33%), the TV that needs to hang straight on the wall, the small solar panel that wants about 16 degrees in Goiânia, the picture frame to be cut at 45, the wobbly table leg. The protractor from your school ruler now fits in your pocket. And it shows you with calm. ARC AND POINTER Semicircle arc with fine marks every 5 degrees, long marks every 15, numbers 15, 30, 45, 60, 75 and 90 on both sides of zero at the top. Pointer animated with soft physics, no jitter on quick moves. Large angle display in whole degrees, in serif Tinta. NOTABLE ANGLES When the angle hits a value that matters to the craft (zero, one third, half, two thirds, plumb), the app highlights quietly with a Verde BLA capsule. No fanfare. Just an editorial confirmation. CALIBRATION The reading comes from the accelerometer and gyroscope of the iPhone, with magnetic correction so it doesn't drift when you rotate the device. You place the iPhone on what you consider zero (the surface that should be level, the wall that should be plumb), tap calibrate, and the app reads the tilt relative to that zero. Works the same in portrait, in landscape, in any rest. Tap recalibrate to change the reference, tap clear calibration in Settings to go back to the raw reading. HOLD MODE Tap hold to freeze the reading on the display. Useful for measuring in tight spots (under a piece of furniture, behind a TV, in an awkward angle) and reading it later. Tap release to resume. 2 THEMES Areia BLA, light background with the brand base. Tinta, dark mode for low-light environments. The theme follows the iPhone's Dark Mode. 100% OFFLINE No data collection. No network. No login. No analytics. No crash reports. One-time purchase, open, measure. Transferidor BLA is an app made in Goiânia by BLA Publicações e Conteúdo Digital, an independent editorial studio led by Ivan Grycuk.
Protractor, Level
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Ruler, tape measure, bubble level and protractor. Four measuring tools in one app. Every tool is free. Centimetres and inches are both free. There is no subscription. RULER Measure anything against the edge of your screen. Centimetres and inches are shown at the same time, so there is no toggle to hunt for. Drag to measure, freeze the reading, copy it with one tap. TAPE MEASURE For anything longer than your phone. Measure one screen at a time and Notch adds up the running total as you go, with undo if you slip. BUBBLE LEVEL Lay the phone flat for a two-axis bubble, or hold it against a wall for a single-axis level. Reads in degrees and slope percentage, and buzzes the moment it is level so you do not have to watch the screen. Set your own zero on any surface. PROTRACTOR AND ANGLE FINDER Measure the tilt of a surface and hold the reading while you move the phone. Or drag two arms on screen to measure an angle on paper. ACCURATE, AND YOU CAN CHECK IT Notch knows the exact pixel density of your device, so it is accurate the moment you open it. If you want to verify, calibrate against any bank card. They are the same size in every country. WORKS ANYWHERE No account. No internet connection needed. No tracking, and nothing is sent anywhere. Notch Pro is a one-time purchase that saves your measurements to a history list. The measuring tools stay free forever.
Screenshots
Verdict
The clearest difference is in-app purchases: Transferidor BLA at none against Protractor, Level's 1. On price, update cadence, 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
Both are free to download. Protractor, Level sells 1 one-off in-app purchase. Transferidor BLA asks for nothing beyond the download.
Transferidor BLA ships an update every 2 weeks, Protractor, Level fortnightly. The most recent releases landed on September 16, 2026 and September 30, 2026 respectively.
| Parameter | Transferidor BLA | Protractor, Level |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks — better | Fortnightly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone | iPhone |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | BLA Publicações e Conteúdo Digital | Streamlined Studios |
In-app purchases
Transferidor BLA
No in-app purchases
Protractor, Level
- Notch Pro$2.99
Questions
Is Transferidor BLA free?
Is Protractor, Level free?
Do Transferidor BLA or Protractor, Level have ads?
Which is updated more often, Transferidor BLA or Protractor, Level?
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