# Tuner B2 — GuitarTuner & Ukulele Tuner

> Real-time instrument tuner with automatic pitch detection and support for many instruments. (iPhone/iPad app by 守群 赵.)

- Source: https://appshunter.io/ios/app/tuner-b2/id6755300645 (this page in markdown: same URL + `.md`)
- Developer: [守群 赵](https://appshunter.io/developer/963658407)
- Category: Music
- Price: Free with in-app purchases
- Age rating: 9+
- Requires: iOS 16.0 · 5 MB
- Languages: Canadian English, Chinese (Simplified, China)
- Released: 2025-12-03
- Data updated: 2026-08-27
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/tuner-b2/id6755300645/reviews.md

## What is Tuner B2?

Little Bear Tuner uses smart audio input to detect sound frequency in real time, analyse pitch accurately, and help you tune your instrument quickly and precisely.

It supports most string and wind instruments, including:
Guitar, Ukulele, Piano, Erhu, Yangqin, Guzheng, Pipa, Banhu, Lap Steel Guitar, Guqin, Zhongruan, Violin, Cello, Harp, Bass, Bamboo Flute, Kalimba, Mandolin, Morin Khuur, Jinghu, Banjo, Sitar and more.

Key Features

Automatic pitch detection

Octave display

Semitone tuning support

Real-time frequency (Hz) display

Guitar Tuning

Supports alternate tunings and semitone tuning.

Open the app and place your phone’s microphone close to the guitar, preferably near the sound hole.

Pluck the strings one by one. Standard tuning from 6th to 1st string is E A D G B E.

Adjust the string tension while watching the note name and octave. Most instruments are recognised automatically.

Bass Tuning

Supports alternate tunings.

Standard bass tuning from thickest to thinnest string is:
E1 A1 D2 G2

Turn the tuning pegs on the headstock to adjust pitch. Tighter strings produce higher notes.

Ukulele Tuning

Supports alternate tunings.

Standard tuning from 4th to 1st string:
G4 C4 E4 A4
(The number indicates the octave.)

Erhu Tuning

Supports 7 common Erhu tuning systems, as well as custom tunings.

C key: D4 A4

D key: C4 G4

G key: G3 D4
…and more.

Guqin Tuning

Fully supports all Guqin tuning modes, including chromatic and special tunings.

Guzheng Tuning

Supports various Guzheng tuning methods. Simply select Universal Instrument to tune.

If your instrument is not listed, choose Universal Instrument for accurate tuning.

Auto-Renewable Subscription

Little Bear Tuner Annual Membership (1 year)

Payment will be charged to your iTunes account upon confirmation.
The subscription renews automatically unless cancelled at least 24 hours before the end of the current period.
Your iTunes account will be charged within 24 hours prior to renewal.

You can manage or cancel your subscription in:
Settings → Apple ID → Subscriptions

Privacy Policy:
http://www.jita666.com/article-180445-1.html

Terms of Use:
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- Automatic pitch detection
- Real-time frequency display
- Support for numerous instruments
- Alternate tuning options
- Semitone tuning
- Octave display

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Annual subscription | $1.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime membership | $29.99 | one-time |


## Recent user reviews (7 of 7)

All indexed reviews: https://appshunter.io/ios/app/tuner-b2/id6755300645/reviews.md

### 1/5 — 调音器

*2026-05-02*

需要会员

### 5/5 — 可以哟

*2026-04-23*

这个新版本很不错

### 5/5 — 调音特别准

*2026-02-04*

好用 好用

### 5/5 — 调音很准确

*2026-02-02*

这个软件调音很准，轻松搞定啦！

### 5/5 — 钢琴调音可以用

*2026-01-25*

我用这个来给钢琴调音可以用诶

### 5/5 — 小熊调音器

*2026-01-09*

很好用的调音器，推荐大家来使用！！

### 5/5 — 吉他王子

*2026-01-04*

还可以吉他能行

## Frequently asked questions about Tuner B2

### How accurate is Tuner B2?

Tuner B2 uses smart audio input to detect sound frequency in real time and analyze pitch accurately. It is rated 4.5 stars from 19 ratings, indicating a high level of user satisfaction with its performance.

### What instruments can I tune with Tuner B2?

Tuner B2 supports a vast array of instruments including Guitar, Ukulele, Piano, Erhu, Guzheng, Violin, Cello, Bass, Bamboo Flute, Kalimba, Banjo, and many more. If your instrument is not listed, you can use the 'Universal Instrument' option.

### Does Tuner B2 support alternate tunings?

Yes, Tuner B2 supports alternate tunings for Guitar, Bass, Ukulele, and Erhu. It also offers semitone tuning support for guitars and other instruments.

### Is Tuner B2 free to use?

Tuner B2 is free to download and use. It offers an auto-renewable annual membership for advanced features, priced at $1.99 per year.

### How do I manage my subscription for Tuner B2?

You can manage or cancel your subscription within your device's settings. Navigate to Settings → Apple ID → Subscriptions to control your Tuner B2 membership.

### What devices is Tuner B2 available on?

Based on the provided data, Tuner B2 is currently supported on iPhone devices.

### How often is Tuner B2 updated?

The latest version of Tuner B2 is 1.1.5, which was last updated on May 15, 2026. This suggests regular updates to improve functionality and add new features.

### What is the age rating for Tuner B2?

Tuner B2 has an age rating of 9+, making it suitable for users aged 9 and above.

## Version history (last 5 releases)

### 1.1.5 — 2026-05-15

Fixed known bugs.

### 1.1.4 — 2026-04-20

Fixed known issues!

### 1.1.3 — 2026-03-22

Fixed known issues!

### 1.1.2 — 2026-03-06

Fixed known issues!

### 1.1.1 — 2026-02-16

Fixed known issues!

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*