Comparison

Gyroscope+ Level IMU Logger vs All

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

Head to head
About

Gyroscope+ Level IMU Logger

Features
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Gyroscope+ Level IMU Logger shows how fast your phone rotates the moment you open it, on every axis, then turns each measurement into a result you can read: press Start, press Stop, and a session card shows the peak rate, the average rate and the peak on each axis. ā–¶ Live rotation rate from the first second • The gauge moves as soon as the screen opens; no button needed to see the rate • Roll (Y), pitch (X) and yaw (Z) rotation rates side by side, plus the combined rate • Pick °/s, rad/s or rpm with one tap (360 °/s = 60 rpm) • Roll, pitch and yaw angles, and a scrolling chart of each axis ā–¶ Stop and see the session Press Start to record, then Stop, and a Session result card appears: • Duration, peak rate and average rate in the unit you picked • The peak on each axis: roll, pitch and yaw • A second-by-second trend line (up to 30 minutes) Every finished session is saved to History once (the last 50). A recording shorter than 2 seconds is not saved. If you switch apps mid-session, recording pauses in the background and the same session continues when you return, and a session cut off when the system closes the app is recovered into History on the next launch. Share a result as text in one tap. ā–¶ Recording that you can trust • Hold the phone still for a moment when a recording starts (the first 20 samples, 2 seconds at 10 Hz) so the sensor's resting offset can be measured; it is only taken when the readings show the phone held still (a turn slower than about 1 °/s cannot be told apart from that offset) • Min, average, max and peak while you record, plus peak-hold chips for each axis with Clear • 10 Hz by default, 50 Hz in high-precision mode • Zero sets the current angles as your reference; a 0.5x–2.0x sensitivity control scales the displayed and recorded rotation rates (not the angles) ā–¶ Turntable rpm and Wow & Flutter Switch to rpm to read the spin of a record player or any platter lying flat: the app compares it with 33ā…“, 45 and 78 rpm and shows the deviation in %. A 10-second Wow & Flutter test at 20 Hz grades the speed stability as good, fair or poor. ā–¶ Attitude and sensor health • An artificial horizon for pitch and roll, and a gyro heading that you can reset (it drifts slowly, as every gyro heading does) • A sensor health check at rest reports the offset and noise on each axis as good, fair or poor ā–¶ Bubble level The Level tab reads the accelerometer: a 2D bubble with surface, pitch and roll angles. Calibrate on a flat surface you trust. To check a surface, measure, turn the phone 180° and measure again; the true error is half the difference. ā–¶ History and export Every session with its trend, exportable as CSV (rates in °/s). The recording itself exports as CSV too, up to 18,000 samples. A statistics CSV of all sessions unlocks for 24 hours after a short ad. ā–¶ Good to know Readings come from the phone's own gyroscope and accelerometer, so keep the phone away from strong vibration and re-zero if angles drift. The heading is gyro-based, not a compass. A Guide tab explains every axis and unit. Interface in 30 languages. For makers testing gimbals and drones, vinyl fans checking turntable speed, physics students, developers checking motion sensors, and anyone curious how fast something spins.

About

All

Features
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PDF Studio is the complete PDF toolkit for iPhone and iPad. Everything you need to scan, create, convert, organize and secure PDF documents — all in one beautifully simple app. No sign-up, no watermark, no file size limits. Everything runs on your device for speed and privacy. Your files never leave your iPhone or iPad unless you choose an online conversion feature. FEATURES • PDF Scanner — Scan documents with your camera and turn them into crisp, clear PDFs • Text to PDF — Write or paste notes and save them as PDF documents instantly • Image to PDF — Combine photos (JPG, PNG, HEIC) into a single PDF • PDF to Word, Excel & PowerPoint — Convert PDFs into editable Office files • Office to PDF — Turn Word, Excel and PowerPoint documents into PDFs • Web to PDF — Save any web page as a PDF • PDF Editor — View, annotate, draw and sign documents • PDF Merge — Combine multiple PDFs into one • PDF Split — Extract or remove specific pages • PDF Compress — Reduce file size while keeping quality • PDF Security — Lock and unlock PDFs with passwords • OCR Text Extraction — Pull text out of scanned documents with Vision OCR • PDF to Image — Export any PDF page as a high-quality image WHY PDF STUDIO? • PRIVATE BY DESIGN — On-device processing keeps your documents confidential • FAST & LIGHTWEIGHT — Opens instantly, handles even large files smoothly • MODERN DESIGN — A clean, intuitive interface that just makes sense Whether you're a student, professional or small business owner, PDF Studio handles your documents the smart way — right from your iPhone or iPad.

Screenshots

Gyroscope+ Level IMU Logger3 screens
All4 screens

Verdict

The call

Gyroscope+ Level IMU Logger and All are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

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

ScorecardNo meaningful differences
Gyroscope+ Level IMU Logger versus All: the parameters behind the verdict, then further details
ParameterGyroscope+ Level IMU LoggerAll
PriceFreeFree
Update frequencyEvery 5 days—
AdsYesYes
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad — better
Requires iOS16.4 — better17.6
Further details — not scored
Size62 MB7 MB
Age rating17+4+
DeveloperKyu-Hee JangAbdul Shahab

In-app purchases

None

Gyroscope+ Level IMU Logger

No in-app purchases

None

All

No in-app purchases

Questions

Is Gyroscope+ Level IMU Logger free?
Gyroscope+ Level IMU Logger is free to download, with no in-app purchases.
Is All free?
All is free to download, with no in-app purchases.
Do Gyroscope+ Level IMU Logger or All have ads?
Both Gyroscope+ Level IMU Logger and All show ads.

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