# SPL vs 钢琴巴士

The clearest difference is price: 钢琴巴士 at Free against SPL's $8.99. 钢琴巴士 also leads on update cadence (every 2 weeks vs every 6 months) and iOS requirement (12 vs 15.0). SPL's advantage is rating (3.0 vs 1.0) and in-app purchases (none vs 13). On ads and device support there is nothing between them.

钢琴巴士 is free to download; SPL costs $8.99 up front. 钢琴巴士 sells 13 one-off in-app purchases. SPL asks for nothing beyond the download.

SPL holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews point the same way: 68% of SPL's written reviews are positive against 44% of 钢琴巴士's.

SPL ships an update every 6 months, 钢琴巴士 every 2 weeks. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | SPL | 钢琴巴士 |
| --- | --- | --- |
| Price | $8.99 | **Free** |
| Rating | **[3.0 (4 ratings)](https://appshunter.io/ios/app/spl/id293573990/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/id1607244680/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | **67.6% of reviews** | 44.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 weeks** |
| Monetization | Paid | — |
| Size | 29 MB | 103 MB |
| Requires iOS | 15.0 | **12** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Smith](https://appshunter.io/developer/291822462) | [Shanghai Music Publishing House Co., Ltd.](https://appshunter.io/developer/651417370) |

## What reviewers say

### SPL

[App page](https://appshunter.io/ios/app/spl/id293573990)

This professional-grade digital sound level meter measures decibels with advanced modes and filters meeting ANSI Type 1 standards. It allows storing, exporting, and calibrating measurements, and can be used with external calibrated microphones for precise results.

**Highlights:** Professional-grade digital sound level meter, ANSI/IEC Type 1 standards compliant filters and modes, Store, recall, and export GPS/time-stamped results, Supports external calibrated microphones, Adjustable calibration for accuracy, Internal mic compensation filter

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 钢琴巴士

[App page](https://appshunter.io/ios/app/id1607244680)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ABRSM英皇考级精选录播课（二级）-vip专属 | $4.99 | one-time |
| ABRSM英皇考级精选录播课（七级）-vip专属 | $6.99 | one-time |
| ABRSM英皇考级精选录播课（六级）-vip专属 | $6.99 | one-time |
| ABRSM英皇考级精选录播课（七级） | $7.99 | one-time |
| ABRSM英皇考级精选录播课（一级）-vip专属 | $7.99 | one-time |
| ABRSM英皇考级精选录播课（初级）-vip专属 | $9.99 | one-time |
| ABRSM英皇考级精选录播课（三级）-vip专属 | $9.99 | one-time |
| ABRSM英皇考级精选录播课（四级）-vip专属 | $9.99 | one-time |
| ABRSM英皇考级精选录播课（八级）-vip专属 | $9.99 | one-time |
| ABRSM英皇考级精选录播课（五级）-vip专属 | $12.99 | one-time |
| 钢琴巴士月卡会员 | $12.99 | one-time |
| 全年陪练卡 | $99.99 | one-time |
| 优惠年卡会员 | $149.99 | one-time |


## Frequently asked questions

### Is SPL free?

SPL costs $8.99, with no in-app purchases.

### Is 钢琴巴士 free?

钢琴巴士 is free to download, with in-app purchases available.

### Which has better reviews, SPL or 钢琴巴士?

SPL is rated higher. SPL averages 3.0 out of 5 from 4 ratings, while 钢琴巴士 averages 1.0 from 1 ratings.

### Do SPL or 钢琴巴士 have ads?

Neither SPL nor 钢琴巴士 shows ads.

### Which is updated more often, SPL or 钢琴巴士?

SPL ships an update every 6 months, and 钢琴巴士 every 2 weeks. Most recently, SPL was updated on October 15, 2026 and 钢琴巴士 on October 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*