Comparison

Tonegraph vs QR Reader：QR Code

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

Head to head

Instrument Tuner

QR Scanner & QR Code Reader

$1.99

🔧 Utilities

No ratingsView app →

About

Tonegraph

Features

Read full description

Tonegraph app is a chromatic instrument tuner that allows you quickly and accurately tune your instrument. Further, this allows you to watch the spectrum of sounds and know the overtone structure of your instrument or your voice. The working range of the app is 30 Hz to 4000 Hz. The exact pitch name and cents of the sound is displayed. Works as guitar tuner, violin, flute, trumpet and more Features -Analog like chronograph -Shows pitch name -Shows sound spectrum and waveform -Many color variation of spectrum chart -Selectable detection threshold -Display range is -50 to +50 cent

About

QR Reader：QR Code

Features

Read full description

FEATURES - Batch Scan - Scan history - Folders to stay organized - Scan all types of QR codes - QR Code detailed data cards - Safe all codes in your history - Save, export and share all barcodes - Scan, read, generate QR & Barcodes - Browse products and compare prices - Share using E-mail, IMessage, Facebook or Twitter - Link photos, LinkedIn, Youtube, App Store or Paypal - Read Websites, Contacts, Messages, Locations, Phone numbers, E-mails, Texts - Scan more types:QR Code, Barcode, Datamatrix, Code128, Code39,Code93, EAN-8, EAN-13 etc. https://sites.google.com/view/appqr/qrcode/agreement https://sites.google.com/view/appqr/qrcode/privacy

Screenshots

Tonegraph4 screens

QR Reader：QR Code4 screens

Verdict

The call

The clearest difference is price: Tonegraph at Free against QR Reader：QR Code's $1.99. Tonegraph also leads on update cadence (every 5 days vs every 4 months). On ads, in-app purchases, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Tonegraph is free to download; QR Reader：QR Code costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Tonegraph ships an update every 5 days, QR Reader：QR Code every 4 months. The most recent releases landed on October 13, 2026 and October 2, 2026 respectively.

Scorecard2 real differences · 4 level

Tonegraph versus QR Reader：QR Code: the parameters behind the verdict, then further details
Parameter	Tonegraph	QR Reader：QR Code
Price	Free — better	$1.99
Update frequency	Every 5 days — better	Every 4 months
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPad, iPod — better
Requires iOS	12.1	12.0 — better
Further details — not scored
Size	15 MB	35 MB
Age rating	4+	4+
Developer	Shinichi Takemura	宝锋吴

In-app purchases

None

Tonegraph

No in-app purchases

None

QR Reader：QR Code

No in-app purchases

Questions

Is Tonegraph free?

Tonegraph is free to download, with no in-app purchases.

Is QR Reader：QR Code free?

QR Reader：QR Code costs $1.99, with no in-app purchases.

Do Tonegraph or QR Reader：QR Code have ads?

Neither Tonegraph nor QR Reader：QR Code shows ads.

Which is updated more often, Tonegraph or QR Reader：QR Code?

Tonegraph ships an update every 5 days, and QR Reader：QR Code every 4 months. Most recently, Tonegraph was updated on October 13, 2026 and QR Reader：QR Code on October 2, 2026.