# 91pu - smart music scores — Real-time customized score

> Smart music score app with real-time customization and a large library of pop songs. (iPhone/iPad app by 海馬音樂工作室.)

- Source: https://appshunter.io/ios/app/91pu-smart-music-scores/id1511458504 (this page in markdown: same URL + `.md`)
- Developer: [海馬音樂工作室](https://appshunter.io/developer/1071364521)
- Category: Music, Education
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 2 written reviews indexed
- Age rating: 17+
- Requires: iOS 13.0 · 43 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2021-01-01
- Data updated: 2026-09-06
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/91pu-smart-music-scores/id1511458504/reviews.md

## What is 91pu?

91pu - the world's first ever smart music score website. Origin from Taiwan.

Using programmed digital operations, you can instantly change keys, types and level of difficulties. Makes "playing and singing" much easier. 

[Over 6.7 million users worldwide]
- Best working partner for resident singers and street performers.
- Superb teaching tool for music teachers.
- Internet celebrity must-use. Great for doing song covers.
- A necessity for guitar and hot music club. No printing needed. No paper wasted.

[Online real-time customized music score]
- 12 kinds of key conversion in real-time, transpose with capo. Customize your exclusive range with ONE clicks!
- Several kinds of customized learning functions and display tools. Suitable for teaching and self-studying!
- Detailed classification. Quickly find your music sheets.
- Personalized score adjustment. Adjust font size and chord table displays in your way.
- Exclusive dual-page display. No more pages flipping on computer!
- Tell us the score you desire in the wishing pool. We will write it for you!

[Tens and Thousands of genuine pop music scores]
- 91pu has obtained "Copyright of Article 91 of Copyright Law" certification. You can play and sing with a peace of mind!

VIP Features:

- Unlimited real-time key conversion
- Fingering tips / Stroke demonstration
- Teaching scores
- Chord changing highlights
- Easy tabs
- Score collections & folders
- Progression chord tabs

Subcription info

Subcription period: 1 month, 6 month, 12 month
Subcription price:
1 month:  NT$390
6 month:  NT$2390
12 month: NT$4790

If you subscribe via iTunes:

Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Account will be charged for renewal within 24 hours prior to the end of the current period at the rate of the selected plan. Subscriptions and auto-renewal may be managed by going to Account Settings after purchase.

Privacy policy:
https://www.91pu.com.tw/special/privacy_policy_app.html
Law info:
https://www.91pu.com.tw/special/lawinfo_app.html

## Key features

- Real-time key conversion
- Customizable learning functions
- Personalized score adjustment
- Dual-page display
- Copyrighted music scores
- VIP features for advanced users

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| VIP member (1 month) | $11.99 | per month |
| VIP member（Half year） | $69.99 | per 6 months |
| VIP member (1 year) | $114.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Hima point 2000 | $7.99 | one-time |
| Hima point 5200 | $17.99 | one-time |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/91pu-smart-music-scores/id1511458504/reviews.md

### 1/5 — 氣到用不下去了

*2024-07-09*

嗎的有夠爛買vip了還有廣告，而且還不能同時登入一個以上的帳號嗎的有夠爛，每個月收那麼多錢還不是沒有一個完整的前奏譜，而且只要手機登入的話平板就死都不用能，就算全部都重新再打一次還說什麼已在別的地方登入，嗎的真的有夠爛。

**Developer response:** 您好：

感謝您的回饋，也很抱歉讓您在使用過程中感到困擾。

目前 VIP 免除的廣告為「聯播網廣告」，不包含系統 推播／公告類型的跳窗訊息，造成您的誤會敬請見諒。另外，前奏六線譜屬於額外加贈給 VIP 的附加功能，因此其更新進度並不會影響您原本的付費權益。

關於多裝置登入的部分，為了保障帳號安全並避免帳號共用情形，我們有設定同時登入的裝置限制。若您已登出其他裝置後仍無法正常登入，可能是系統判定異常，請您協助來信至客服信箱：91hima@gmail.com，我們會由專人協助您進一步處理，謝謝您的理解與配合。

### 5/5 — Great app and great 91 pu team

*2021-07-03*

謝謝91pu團隊用心製作及開發，
讓吉他彈唱業餘愛好者都找到屬於自己的小天地。
App在手機或ipad上都非常好用。
大力推薦！

**Developer response:** 親愛的小海馬您好： 感謝您的推薦及好評！ 祝您使用愉快～～

## Frequently asked questions about 91pu

### What is 91pu?

91pu is a smart music score application that allows users to instantly change keys, types, and difficulty levels of music scores. It aims to make playing and singing much easier for musicians of all levels.

### Does 91pu have ads?

Yes, 91pu contains advertisements. As a free application with in-app purchases, ads are displayed to support its continued development and availability.

### What are the subscription options for 91pu?

91pu offers VIP membership subscriptions for 1 month ($11.99), 6 months ($69.99), and 1 year ($114.99). These VIP features include unlimited key conversion, fingering tips, and score collections.

### How does 91pu handle copyright for its music scores?

91pu has obtained 'Copyright of Article 91 of Copyright Law' certification, ensuring that users can play and sing with peace of mind regarding copyright.

### What devices is 91pu compatible with?

91pu is designed for iOS devices, including iPhone, iPad, and iPod. It is optimized for a seamless experience across these platforms.

### How often is 91pu updated?

The latest version of 91pu is 1.2.3, and it was last updated on September 1, 2022. Updates typically include new features, bug fixes, and performance improvements.

### Can I request specific music scores on 91pu?

Yes, 91pu has a 'wishing pool' feature where users can tell them the score they desire, and they will write it for you. This allows for a more personalized music library.

### What is the age rating for 91pu?

91pu has an age rating of 17+, indicating that it may contain content suitable for mature users. This rating is determined by app store guidelines.

## Version history (last 5 releases)

### 2.1.14 — 2026-09-05

Fix member subscription error

### 2.1.5 — 2026-09-02

Fix Facebook and Apple Login

### 2.1.2 — 2026-09-01

Fix Facebook login and Apple Login Bug

### 2.0.3 — 2026-08-29

Update whole new version of 91PU

### 1.2.3 — 2022-09-01

Version 1.2.2
- Resolve the song name flicker issue 
- Bugs fixed

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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 2026-09-06.*