Pitch Checker vs Note a note
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pitch Checker
This app analyzes real-time audio to display musical notes, pitch, octave, frequency, and waveform. It helps measure vocal range, practice absolute pitch, detect song notes, and includes a metronome for rhythm practice. Adjust settings for notation, reference pitch, and sensitivity.
- Real-time audio analysis
- Vocal range measurement
- Pitch detection
- Frequency and waveform display
- Metronome with sound/vibration
- Adjustable microphone sensitivity
- Customizable notation settings
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The app analyzes real-time audio from your microphone and displays musical note, pitch, octave, frequency, and waveform information. ■ Measure and Track Your Vocal Range Tap “Measure vocal range” in the Range tab to measure your highest and lowest notes. Hold the same note for one second to register it, then save once both notes have been measured. View your saved measurements in the history graph and look back at how your vocal range changes over time. It also includes a Metronome feature (Beta), allowing you to set the tempo and practice with sound and vibration cues. ■ Usage Examples - Measure vocal range - Practice absolute pitch - Detect the musical notes of a song (pitch detection) - Vocal exercises - Karaoke practice - Improve pitch accuracy - Measure frequency - Voice training - Basic instrument tuning (use it as a tuner) - Do, Re, Mi note detection - Rhythm practice using the metronome You can pause the analysis with a tap, allowing you to review the results at your own pace. The display also supports notations such as low A, mid2 A, hihi A, etc. ■ How to Use Simply launch the app, and it will automatically measure the pitch of sounds captured by the microphone — whether voice or instruments. To avoid picking up small sounds and background noise, slide the “Microphone Sensitivity” bar in the upper-left corner upward. The metronome can be used by simply setting your desired tempo. ■ Settings Tap the gear icon in the top-right corner to access the following settings: - Toggle between sharp and flat notation - Change the large center display notation (Do, Re, Mi / C, D, E, F, G, A, B) - Set the reference pitch - Adjust pitch detection speed - Set the metronome tempo ■ FAQ Q. I want to measure my vocal range. A. Tap “Measure vocal range” in the Range tab to measure and save your highest and lowest notes. Review your saved results in the history graph. Extended notations such as hihi A and lowlow A are also supported. Q. Pitch is displayed even when it’s quiet. A. Even in very quiet environments, tiny background noise may be detected. To prevent this, slide the “Microphone Sensitivity” bar upward to ignore softer sounds. Q. I want to use it as a tuner. A. No special settings are required. However, switching the large center display from "Do, Re, Mi" to "C, D, E, F, G, A, B" may be more convenient. Tap the gear icon and change the “Large Display Notation” setting. ■ Other Information Permissions: - Microphone: Used to analyze audio input - Siri & Search, Cellular Data: Used for AdMob advertisements Terms of use can be found here: https://pitchchecker.app/terms/ For bug reports or inquiries about the app, use the contact form on our official website: https://pitchchecker.app/en/ Feel free to use this app on media platforms such as TV.
Note a note
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The Perfect Tool for Vocalists! 'Note a note' app helps you accurately identify notes, sound frequency, and even deviation in cents using the built-in microphone. Just sing, and the app instantly displays your note on a musical staff! The ideal tool for those learning to sing and wanting to improve their musical ear. Take a step toward vocal perfection with our app!
Screenshots
Verdict
The clearest difference is in-app purchases: Note a note at none against Pitch Checker's 2. Note a note also leads on ads (none vs shown) and iOS requirement (13.4 vs 17.0). Pitch Checker's advantage is update cadence (every 5 days vs fortnightly). On price 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. Pitch Checker sells 2 in-app purchases, starting at $3.99 per month. Note a note asks for nothing beyond the download.
Pitch Checker ships an update every 5 days, Note a note fortnightly. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.
| Parameter | Pitch Checker | Note a note |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (617 ratings) — better | — |
| Positive reviews | 51.8% of reviews | — |
| Number of ratings | 617 — better | — |
| Update frequency | Every 5 days — better | Fortnightly |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 13.4 — better |
| Further details — not scored | ||
| Size | 56 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Shigeki Matsunaka | Chirill Popovschii |
Bugs and requests
Pitch Checker
Reported bugs
22 issues- Banner of naked pictures across the top
- Full of scam ads now
- 音程を測定できなくなった (Pitch measurement stopped working)
- マイクがあまり反応しなくなってしまった (Microphone not responding well)
- Penis Adverts - not appropriate
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- When it works most of the time it doesn’t
- マイクの設定を有効にするのに時間がかかった (Took time to enable microphone settings)
- アプリが使用できない (App cannot be used)
- Often doesn't show pitch despite picking up audio
- 測れる音域について (About the measurable pitch range)
- 使えない (Cannot be used)
- マイク感度を高くするとノイズに弱い (Weak against noise when microphone sensitivity is high)
- This App has such a great microphone even with my door closed it can hear from downstairs!
- Doesn’t pitch vocal fry
- Doesn’t work at all
- tracks you
- App works well but can’t change language
- Doesn’t work
- アイディア最高!ピッチのok判定は甘すぎかも (Idea is great! OK judgment for pitch might be too lenient)
- ピアノを弾いた時に弾いた音より1オクターブ上の音で表示されてしまいます (When playing piano, it displays one octave higher than the played note)
- ファ#が表示されない (F# is not displayed)
- ファ#の#表示 (F# sharp display)
Requested features
10 requests- Display highest recorded note
- Ability to control measurement start time
- Recording of measured sounds
- Support for movable do (solfege)
- Option to change key for solfege
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- Adjustable OK判定 range
- Support for wind instruments
- Add more free features
- Option to select vocal register
- Change language to English
Note a note
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Pitch Checker
- Ad Hiding Plan+Graph Function$3.991 Month
- Ad Hiding Plan+Graph Function$39.991 Year
Note a note
No in-app purchases









