Appworthy

Cello Tuner - Simple Tuner

Tuner for Cello

De Gaston Apps, LLC
Download on theApp Store
App Store rating4.2★476 ratings
PriceFreeListed price
Age4+Store age rating
Size27 MBiPhone download
CategoryLifestyle
DeveloperDe Gaston Apps, LLC

What we found

Full report

Too little checked to say Store information only. We haven’t analysed this app or read its reviews yet.

Money

  • Free to download.

Not yet tested.

The store currently lists version 4.7.2, updated 2026-10-04.

Preview

Screenshot 1Screenshot 2Screenshot 3Screenshot 4Screenshot 5Screenshot 6Screenshot 7Screenshot 8

Store screenshots supplied by the developer.

About this app

Ready for rehearsal? Cello Tuner brings every C G D A string into focus with a clear pitch needle, note name and frequency reading. Its pitch tracker follows a sustained bowed or plucked note through some background noise, helping you tune with confidence when the room is not perfectly quiet.

Standard C G D A tuning

Use Cello Tuner for the standard C, G, D and A strings, from the low C to the upper A. Keep the instrument layout in view while you work through each string before a lesson, home practice, or ensemble rehearsal.

- See the detected note, octave and frequency.

- Follow the needle to check sharp or flat pitch.

- Tap a string button to hear a recorded reference sound.

- Compare your string by ear, then confirm it on the display.

Precision you can see

Cello Tuner shows the note, octave and frequency in hertz.…

From the developer’s store description.

For developers and the curious

The full report

The evidence, sources, measurements and versions behind every label above.

Findings and evidence

Not yet tested
Not yet tested. No analysis has been published for this app. A missing label is not a clean bill of health.

What reviewers report

No review coverage

No review analysis published for this app.

Measurements

3 measured · 5 not assessed

“Not assessed” means we could not measure it. It is never a zero and never a pass.

From store data and reviews

Developer replies to reviews
Not assessed
Fewer than 50 reviews scanned — too few to state a rate
Price in the store description
The store description doesn’t list prices (most don’t)
Cancelling, in the store description
The store description doesn’t say how to cancel (most don’t)
Themes reported by reviewers
Not assessed
This app's reviews have not been assessed yet
Five-star share of ratings
65–79% five-star
Arithmetic on the stores' own published rating counts. It says nothing about why the ratings fall where they do.

In the app package we scanned

No package has been scanned for this app, so nothing is published about what it ships. That is an absence of evidence, not a finding.

Sensitive permissions
Not assessed
No package has been scanned for this app
Analytics or tracking SDKs in the scanned package
Not assessed
No package has been scanned for this app
Advertising SDKs in the scanned package
Not assessed
No package has been scanned for this app
How we know

Supporting measurements: not a complete list of possible harms or positives. Measurement vocabulary 1.4 · how these are measured

Versions and dates analysed

Not yet tested

Not yet tested. No analysis has been run for this app, so there is no version or date to report.

Store update history

Each store’s release notes, as the developer wrote them. They are the developer’s words, not ours.

App Store

Version 4.7.2 · 2026-10-04
Bring every string into focus. This update gives your cello tuning a steadier needle, refreshed reference sounds and a smoother start to rehearsal. - Improved pitch tracking: the updated tuning engine follows more sustained notes through some background noise and waits for a clearer note when the sound is uncertain. - Steadier tuning guidance: smoother sharp and flat feedback reduces distracting needle jumps, helping you make small, precise adjustments. - Refreshed cello reference tones: tap the C, G, D and A string buttons to hear the updated sounds for standard CGDA tuning and compare your open strings by ear. - Better reference playback on iPhone and iPad: fixed an issue that made…

Shortened here; the full notes are on the store listing.

Assessment record

Status
Not yet tested
App identifier
cello-tuner
Sources used
None recorded
Reviews read
None recorded
Package examined
No package scan
Human inspection
Not completed
How we know
Measurement vocabulary
1.4

Store facts

App Store

What the stores publish. Store ratings are the stores’ numbers, not Appworthy’s, and are never averaged across stores.

App Store

Store rating
4.19 ★ · 476 ratings
Version
4.7.2
Updated
4 Oct 2026
Price
Free
Age rating
4+
Size
27 MB
Open in App Store
Developer
De Gaston Apps, LLC
Category
Lifestyle
Listing price
Free

No itemized purchase list is available for this listing.

Method and limits

What this report can and cannot show

What a missing label means

Not yet tested. No analysis has been published for this app, so there is no method to describe for it yet. A missing label is not a clean bill of health: it means nothing has been read, not that nothing is wrong.

Limits of this report

  • A package scan is static. It identifies code and text in one Android build. It does not measure a live ad session, test a deletion request, or count the steps needed to cancel.
  • Reviews keep their sample. A review-only charge shows distinct reviewers, the share and the sample size, and is published only once it clears that label’s published threshold. Calibration labels are machine-drafted and not yet confirmed by a person.
  • Not assessed is a state. It is never a zero and never a pass.
  • A missing label is not a clean bill of health. It means the evidence did not support one, not that the app is problem-free.
Not yet human-reviewed. A human review gives an app hands-on, recorded measurements. None has been run for this app. Hands-on inspections are not yet open.
Review thresholds Read the methodology For developers

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