# BeatLock: Metronome & Tempo — Tap, BPM Detector & Beat Sync

> Tap, BPM Detector & Beat Sync (iPhone/iPad app by 杨 谌.)

- Source: https://appshunter.io/ios/app/beatlock-metronome-and-tempo/id6807074983 (this page in markdown: same URL + `.md`)
- Developer: [杨 谌](https://appshunter.io/developer/6806893791)
- Category: Music
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 42 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2026-10-10
- Data updated: 2026-10-14

## What is BeatLock?

The metronome that clicks the instant you tap, and locks to the song you're playing along with.
Play a song, and in a few seconds BeatLock finds its tempo and beat, then takes over in time.
Nudge the beat earlier or later while it plays. The tempo stays put.

INSTANT START, NO DRIFT
The first click lands right away, with no wait for a full beat. Every beat is scheduled at an absolute time on the audio clock, so timing doesn't drift, even over a long session. Swipe the number to fine-tune the tempo, tap − / + to move one BPM, or tap the number to type it in. 20–300 BPM, with tap tempo.

LISTEN: FIND THE BEAT OF A SONG
Play some music and tap Listen. BeatLock listens through the microphone for a few seconds, estimates the tempo and where the beats fall, and takes over only when it's confident. If it isn't sure, it won't guess. Once it locks, nudge the beat anytime; the BPM never changes.

YOUR RHYTHM, YOUR WAY
Set the time signature, beat grouping and note value separately, so 7/8 can run as 2+2+3. Add subdivisions, rhythm patterns and swing. Tap any beat to switch it between accent, normal and mute.

LATENCY CALIBRATION
Every device and every output has its own delay, and Bluetooth headphones add the most. BeatLock keeps a separate latency offset for the speaker, wired headphones and each Bluetooth device. On the speaker, measure it automatically with a test tone; with headphones, fine-tune it by ear. Set it once per pair and it applies every time they connect.

TRAINING
Timer and count-in for every session. Training plans: a tempo ramp that builds speed step by step, silent bars that test your inner clock, and an offbeat click. A practice log keeps track of your sessions.

APPLE WATCH
Feel every beat on your wrist. Your iPhone sends the beat grid once and the watch keeps time on its own. Keep BeatLock open on your watch and it keeps tapping even after you lower your wrist. Adjust vibration strength and timing offset in Settings.

FREE
• 20–300 BPM and tap tempo
• Any time signature, common groupings and subdivisions
• Tap a beat to accent or mute it
• All 8 sounds
• Presets: save a setup and apply it in one tap (up to 3)
• Timer and count-in
• Screen flash and haptic feedback on controls
• Manual latency offset and beat nudge
• Background playback

MEMBERSHIP: GO AND PRO
Go unlocks the full metronome: custom beat grouping, rhythm patterns, swing, tempo ramp, big beat count view and unlimited presets.
Pro includes everything in Go, plus Listen, automatic latency calibration, silent-bar and offbeat training, and the practice log.
Subscribe monthly or yearly, or buy once for lifetime access. Try Listen free 10 times before you join.
Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in Settings › Apple Account › Subscriptions.

PRIVACY
The microphone is on only during Listen and automatic calibration. Audio is processed entirely on your device: never recorded, never uploaded, never logged. No ads, no account. Anonymous usage statistics only, and you can turn them off in Settings.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://peterchen1997.github.io/beatlock-site/privacy.html

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro 会员（月） | $0.99 | per month |
| Pro 会员（年） | $2.99 | per year |
| Go 会员（年） | $1.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| BeatLock Pro 永久版 | $9.99 | one-time |
| BeatLock Go 永久版 | $3.99 | one-time |
| Go 升级 Pro 永久版 | $5.99 | one-time |


## Is BeatLock safe?

Not enough ratings yet to assess BeatLock.

## Is BeatLock legit?

BeatLock: Metronome & Tempo has limited verification signals. The AppsHunter Legitimacy Score for BeatLock is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 4 releases)

### 2.1 — 2026-10-13

BeatLock now speaks English.
• Full English interface that follows your device's language
• Apple Watch app in English too
• New Language row in Settings to switch BeatLock's language on its own
• Swing now has a quick how-to tip
• Bug fixes and stability improvements

### 2.0.1 — 2026-10-12

新增「训练」页：
· 逐步提速：每几小节加一点速度，到目标后保持、停止或循环
· 静音训练：响几小节、静几小节，静的时候靠自己稳住节拍
· 弱位点击：点击只落在弱拍或反拍，正拍交给你自己
· 练习记录：训练方案和定时练习都会记下来，看每天练了多久、提速坚持到了多快

其他：
· 购买没有完成时直接说明原因；如果已经扣款，不用再买一次，稍后会自动生效，也可以点「恢复购买」
· 修正了部分页面的功能说明

### 2.0 — 2026-10-11

BeatLock 2.0 是一次从里到外的大更新。

· 全新界面：速度数字更大、更醒目，按钮与卡片统一风格；采用系统原生标签栏，节拍、训练、曲库一点即达
· 节奏更完整：拍号、分组、时值分开设置，7/8 可以按 2+2+3 走；细分网格、常用节奏型、Swing，每一拍的强弱点一下就能切换
· 拍号和细分各有各的面板，面板可拖动、下滑即关
· 调速更顺手：左右滑动数字微调，点 − / + 一次一拍，点数字直接输入
· Tap 换到右手边，Tap 与「听歌对拍」按钮更大，单手好按
· 8 种音色全部免费，点一下就能试听，主音量可调
· 训练：定时与预备拍；定时暂停后接着计时，随时可取消
· 曲库：一键存下当前设置，左滑删除，在「编辑」里调整顺序
· 点首页左上角的输出设备，查看并修改每副耳机、每个音箱的延迟补偿
· 大拍数视图：舞台上远远也看得清第几拍
· 会员：新增 Go / Pro 两档，订阅或永久任选；早鸟价限时至 2026 年底。已经买断 BeatLock Pro 的老用户自动拥有全部 Pro 功能，在「设置 › 会员」恢复购买即可
· 修复了若干问题，整体更稳定

### 1.0 — 2026-10-10

No release notes.

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## More apps by 杨 谌

- [Twnkle - 一句话记事，到点提醒你处理](https://appshunter.io/ios/app/twnkle/id6807066031)

All apps by 杨 谌: https://appshunter.io/developer/6806893791

## Related topics

[beatbot](https://appshunter.io/ios/topics/beatbot)

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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 2026-10-14.*