Vibration vs AudioNote™
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vibration
This app analyzes vibration spectrums using your device's sensors. It can process time-series data, remove DC bias, apply windows, and perform FFT for frequency analysis. Results can be emailed for documentation.
- Built-in accelerometer and gyroscope analysis
- Internal microphone and external Digiducer support
- Adjustable sample rates and data lengths
- FFT and frequency spectrum plotting
- DC bias removal and Hamming window
- Data export via email and iTunes
- Apple Watch companion app for triggering
Read full descriptionHide full description
Vibration turns your iPhone or iPad into a true FFT vibration spectrum analyzer — a portable alternative to a commercial spectrum analyzer for machinery diagnostics, acoustic testing, and hobbyist vibration analysis. Version 5.00 is a complete visual redesign: a modern, color-coded interface built around the way vibration technicians actually work, with clean, uncluttered screens for every channel and setting, a drag-cursor readout for reading exact values on any plot, and a crisp new PDF report you can generate and share in seconds. MEASURE FROM ANYWHERE - Built-in 3-axis accelerometer and gyroscope — sensitivity to about 0.02g, range ±2g - Built-in microphone input for acoustic vibration analysis - Digiducer professional USB accelerometer support (additional Digiducer features unlockable via in-app purchase) ANALYZE LIKE A BENCH-TOP SPECTRUM ANALYZER - Time series and FFT frequency spectrum on every channel, with adjustable sample rate (10 Hz–100 Hz internal, up to 48 kHz with microphone/Digiducer) - Linear-Linear, Log-Log, Log-Linear, and Linear-Log frequency display modes - Hamming, Hanning, and Flattop windowing - Integrate and differentiate in the frequency domain - RMS and peak levels per channel and combined - Frequency averaging and peak hold - Color-coded peaks list with the top 5 peaks per channel - Tap-and-drag cursor readout in portrait or landscape, with magnetic snap to peaks - Selectable data length from 256 to 4096 samples, variable start delay up to 20 seconds - DC-remove option to eliminate the gravity vector BUILT FOR THE FIELD - Guided accelerometer calibration with an on-screen orientation guide, live stability meter, and a locked reposition countdown - Trigger acquisitions from one or more accelerometer channels or the microphone - Auto-repeat and auto-save for long-duration monitoring - Apple Watch companion app — trigger a sample and review settings right from your wrist DOCUMENT YOUR RESULTS - New crisp PDF report — identical on iPhone and iPad — with time series and frequency plots and acquisition details - Open, non-proprietary format — data saves as plain CSV you can reload in the app or open in Excel, MATLAB, or Python, and email straight to your desktop - Save data locally and transfer with the Files app - Screen snapshots sync to your computer like any photo In many applications, Vibration is an excellent portable alternative to a commercial spectrum analyzer. In predictive maintenance applications it can help identify bearing defects, shaft misalignment, imbalance, and structural resonant frequencies — and it's equally useful for monitoring the acceleration of part and material handling equipment. Further development and additional features are planned. Use the email links in the app to request features or report issues.
AudioNote™
This app combines note-taking with synchronized audio recording, allowing users to instantly access specific moments in recordings by tapping on their notes. It supports text, drawings, photos, and PDF annotation, making it ideal for students and professionals to capture and review information efficiently.
- Synchronized note and audio recording
- Seek directly to audio by tapping notes
- Highlighted notes during playback
- Insert text, drawing, and photo notes
- Audio amplifier
- Import and annotate PDF documents
Read full descriptionHide full description
Take notes with recorded audio using the best note taking app in the App Store! AudioNote combines the functionality of a notepad and voice recorder to create a powerful tool that will save you time while improving the quality of your notes. It’s the perfect app for students or business. By synchronizing notes and audio, AudioNote automatically indexes your meetings, lectures, interviews, or study sessions. Need to review the discussion about deliverables on your next project? Trying to remember what the professor had to say about a key point? With AudioNote there is no need to waste time searching through the entire recording to find out. Each note acts as a link directly to the point at which it was recorded, taking you instantly to what you want to hear. Didn't take any notes during the meeting? No problem, you can add them later. A fully functional note application, AudioNote also increases the value of your notes. Watch as your text, drawings, and photos highlight during playback, helping you to remember the context in which they were taken. With the convenience of the iPad or iPhone, you can use AudioNote anywhere: meetings, interviews, conferences, lectures, study sessions. Even use it to record memos to yourself as you jot down new ideas. Join the thousands of students, teachers, business executives, and other professionals who have already discovered what an indispensable tool AudioNote can be. Download it today! ************************************************** AudioNote Features: - Synchronized note and audio recording - Seek directly to audio by tapping notes - Highlighted notes during playback - Insert text, drawing, photo, & highlighter notes - Audio amplifier for recordings made in larger conference rooms - Import and take notes directly on PDF documents (iPad only) - Share with iCloud, Dropbox, over WiFi, or through iTunes - Desktop support: view your .audionote files on Mac or PC (see our website for more info) ************************************************** Featured in Gizmodo's "The Best Note Taking Apps": "AudioNote has one trick, and it's a doozy. Aside from functioning as a basic note-taking app, AudioNote can make sound recordings at the same time, and keep them synchronized, note by note, with the text. You can, in effect, relive a lecture or a meeting through sound and notes." http://gizmodo.com/5674316/the-best-note+taking-apps ************************************************** What Customers Are Saying: "The best note taking application out there!" - Bill K. "I've been looking for a note taking program. Tried several. This is the best by far." - Steve S. "GREAT JOB, use this for all my meetings!" - Jason T. "This program is sooooooo useful. ... I would recommend this to ANY student for any lectures." ************************************************** Still not convinced? Try AudioNote LITE for free!
Screenshots
Verdict
The clearest difference is in-app purchases: AudioNote™ at none against Vibration's 1. AudioNote™ also leads on ratings volume (118 vs 9) and update cadence (every 3 weeks vs every 6 weeks). Vibration's advantage is rating (4.4 vs 4.2) and price ($9.99 vs $12.99). On ads, chart position 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
Vibration costs $9.99 and AudioNote™ $12.99 up front. Vibration sells 1 one-off in-app purchase. AudioNote™ asks for nothing beyond the download.
Vibration holds the better App Store score, 4.4 against 4.2. That said, the two scores are not equally well evidenced: AudioNote™ has 118 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 79% of Vibration's written reviews are positive against 71% of AudioNote™'s.
Vibration ships an update every 6 weeks, AudioNote™ every 3 weeks. Both last shipped on September 23, 2026.
| Parameter | Vibration | AudioNote™ |
|---|---|---|
| Price | $9.99 — better | $12.99 |
| Rating | 4.4 (9 ratings) — better | 4.2 (118 ratings) |
| Positive reviews | 79.3% of reviews — better | 71.1% of reviews |
| Number of ratings | 9 | 118 — better |
| Update frequency | Every 6 weeks | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | #138 | #87 — better |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 17.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Diffraction Limited Design LLC | Luminant Software, Inc |
Customer experience
Vibration
AudioNote™
Bugs and requests
Vibration
Not enough reviews yet to summarise bugs or requests.
AudioNote™
Reported bugs
3 issues- Recordings sometimes disappear or get corrupted
- Difficulty navigating large audio files
- Compatibility issues with newer iOS versions
Requested features
6 requests- Ability to change font size, color, and formatting
- Improved file management and sharing options
- Background recording mode
- Faster playback speed controls
- Integration with cloud storage services
Show 1 moreShow fewer
- More drawing/annotation tools
In-app purchases
Vibration
- Enable full Digiducer functionality$19.99
AudioNote™
No in-app purchases
Questions
Is Vibration free?
Is AudioNote™ free?
Which has better reviews, Vibration or AudioNote™?
Do Vibration or AudioNote™ have ads?
Which is updated more often, Vibration or AudioNote™?
Which is more popular, Vibration or AudioNote™?
Other comparisons















