PDF Note Pro vs Arioso
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDF Note Pro
This application allows users to take freehand notes directly on PDF documents and record audio simultaneously. Notes are saved in native PDF and M4A formats, syncing across devices via iCloud for seamless access on mobile, desktop, and web. It offers powerful annotation tools and is available for free on iOS.
- Freehand PDF annotation
- M4A audio recording
- iCloud syncing across devices
- Native PDF and M4A formats
- Vector drawing tools
- Text tool for typing
- Image and web page insertion
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PDF Note Pro is the most innovative, flexible, compatible, and powerful Note-Taking application! PDF Note Pro features Freehand Notes in a Native PDF format, and Audio recording in a Native M4A format. Using the PDF format, Freehand Notes are synced across all your devices (via iCloud) so you always have the latest version of your Notes with you -- regardless of device. And since PDF Note Pro uses the PDF format, you can annotate PDFs with powerful Note-taking tools *and* your Notes are ready for Mobile, Desktop, Web, and Print right from the get go: No more manually exporting notes and uploading files - PDF Note Pro handles everything for you! And best of all, PDF Note Pro is free for iOS and only $9.99 (U.S.) for OS X! With iCloud Drive, you can take Notes on the go and have your Notes ready at your Mac or Windows PC already downloaded when you get home* And If that wasn't enough, PDFs can be transferred instantly from one device to another with iCloud HandOff so you can start working on one device, and continue on another (iPhone, iPad, and Mac)** iOS Specific Features: - Innovative Graphical File Manager with Natural Touch Gestures: Single Tap to Select a File, Double-Tap to Open a File, Two Finger "Pinch" to Zoom the File Manager, and Tap and Hold to Drag Files onto Folders - Photorealistic page swipe animations (swipe the vertical edge of a PDF page horizontally to go to the previous or next page) - Draw using Palm Rest or Magnifier Window with "Smart Shift" technology Innovative Features on both iOS and OS X: - Freehand draw on Notes using native PDF format with “Vector" note taking tools such as Pencil, Eraser, and Highlighter; keeping PDF file sizes small - Record Audio in M4A format with stunning 3D Visualizor; M4A Audio files are synced to all your devices - iCloud support keeps your documents in Sync across iPhone, iPad, and Mac; and with iCloud Drive, Windows PCs and well* - iCloud HandOff lets you start work on one device and continue on another (iPhone, iPad, and Mac)** - Text Tool lets your Touch/Click to Type anywhere (iPad/Mac) - Cut Tool Makes it easy to reposition PDF content - Add Images, Text, and Web Pages to a PDF instantly (iPad/Mac) - Full Speech-To-Text Dictation support anywhere you can Type (Press Dictation key on keyboard on iOS, press “Fn” key twice on OS X) - iCloud is completely optional — PDF Note Pro works just as well offline as online! * iCloud Drive Support for Windows requires iCloud Drive install, iCloud Drive for Mac requires OS X 10.10 or later; iCloud Drive supports PDF/M4A **iCloud HandOff requires both Bluetooth 4.0/LE and WiFi on and enabled; iCloud HandOff works with PDF only ***Large PDF Documents in the Cloud (such as large eBooks) is not recommended*** ***If you have any issues please restart your device!***
Arioso
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Arioso is a practice app for the piano. It guides you to learn new pieces in segments, listens through the microphone while you play, follows along with the score, and gives you accurate feedback. - Listening - Arioso hears notes as they sound from an acoustic, digital or hybrid piano, including chords, held notes and ornaments, and tracks where you are in the music. The analysis runs on the device. What it does with that depends on the mode you are in. - Four ways to work - 1. Read & Listen plays the piece while the cursor follows the score, so you can hear it before you play it. 2. Note waits for you. Play the highlighted notes and the cursor moves on once they are right. Take as long as you need. 3. Flow keeps going at your pace. Notes your hands skipped are marked on the score at the end, so you can see what you have been avoiding. 4. Perform gives you a cursor and nothing else on screen. When the take ends you get a report: how many notes matched, how many were early or late, and how many never sounded. The notes are coloured on the score so you can see where it went. - Working in segments - A piece is divided into short segments, usually four to eight bars, and each segment gets the same four stages. You can take a few bars, work them until you have them, then join them to the next few. A map of the piece shows which segments are done and which are still ahead. If the music breaks somewhere else, you can redraw the segments yourself. - Scales and sequences - Arioso generates scales and exercises as you need them: eighteen keys, four modes, one to three octaves, either hand or both, straight or in broken thirds, and twenty Hanon-style figures. Each one arrives with a key signature, fingering and a written metronome mark, and can be practised in any of the four modes. Save the ones you come back to. - Music Player - Choose a book, or the whole library, and Arioso plays through it in order or shuffled. It keeps playing when you leave the app, with controls on the lock screen. - Your own music - Import MusicXML files and they join the library alongside everything else, with every mode and tool available. - The music - Every included piece is engraved specifically for this app, typeset from scratch rather than scanned, and comes with a printable PDF of its score. Four books are free: Classical Favorites (Für Elise, the Moonlight Sonata, Clair de lune, Liebestraum No. 3, The Entertainer and more), Mozart's Twinkle Variations, Satie's Gymnopédies and Chopin's Nocturnes Op. 9. Eight more books cover the Baroque, Classical and Romantic repertoire piano students tend to work through: Bach, Burgmüller, Czerny, Schumann and Tchaikovsky. Each is a single purchase, and two pieces in each are free to play first. Browse the library by level, composer or book. - Tools - A metronome with a count-in you can see as well as hear. A speed dial for taking something under tempo and bringing it up. A setting for how strictly a take is judged. Practice one hand, or one section. An on-screen keyboard you can turn off. Fingerings shown, or suggested where the score has none. Your own SoundFont, if you have one you prefer. - What you need - A piano, acoustic, digital or hybrid, and an iPhone or iPad nearby. Arioso listens through the microphone, so the instrument needs to be sounding in the room rather than in headphones. - Privacy - Audio is analysed entirely on your device. Nothing you play is recorded or sent anywhere. Your practice history follows you between your own devices through your private iCloud, which we have no access to. No account, no analytics, no advertising.
Screenshots
Verdict
The clearest difference is update cadence: Arioso at fortnightly against PDF Note Pro's every 11 months. PDF Note Pro's advantage is iOS requirement (14.0 vs 26.0). On price, ads, in-app purchases 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. PDF Note Pro sells 1 one-off in-app purchase and Arioso sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
PDF Note Pro ships an update every 11 months, Arioso fortnightly. The most recent releases landed on November 1, 2026 and November 9, 2026 respectively.
| Parameter | PDF Note Pro | Arioso |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 11 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 18 MB | 199 MB |
| Age rating | 17+ | 4+ |
| Developer | Mach Software Design | HANG ZHENG |
In-app purchases
PDF Note Pro
- Remove Ads2 variants$0.99
Arioso
- Burgmüller 25 Studies Op. 100$2.99
- Czerny 50 Studies Op. 481$2.99
- Czerny 100 Studies Op. 599$2.99
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- Bach 15 Two-Part Inventions$2.99
- Bach Anna Magdalena Notebook$2.99
- Bach 18 Little Preludes$2.99
- Tchaikovsky Album for the Young$2.99
- Schumann Album for the Young$2.99









