# Saxophone Level vs BATTERY BT

The clearest difference is ads: BATTERY BT at none against Saxophone Level's shown. BATTERY BT also leads on iOS requirement (13.0 vs 18.5). Saxophone Level's advantage is update cadence (fortnightly vs every 2 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Saxophone Level ships an update fortnightly, BATTERY BT every 2 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | Saxophone Level | BATTERY BT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/battery-bt/id6751628283/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | — | Free |
| Size | 39 MB | 31 MB |
| Requires iOS | 18.5 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [碧华 舒](https://appshunter.io/developer/1787849397) |

## What reviewers say

### Saxophone Level

[App page](https://appshunter.io/ios/app/saxophone-level/id6748576521)

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

**In-app purchases:** none


### BATTERY BT

[App page](https://appshunter.io/ios/app/battery-bt/id6751628283)

This app provides intelligent battery management for lithium battery systems. It offers real-time monitoring, advanced safety functions, active balancing, and performance analysis. Transform complex battery data into actionable insights for reliable protection.

**Highlights:** Real-time battery monitoring, Advanced safety functions, Active battery balancing, Battery performance analysis, Simplified BMS functions, Wireless software updates

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Saxophone Level free?

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

### Is BATTERY BT free?

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

### Do Saxophone Level or BATTERY BT have ads?

Saxophone Level shows ads; BATTERY BT does not.

### Which is updated more often, Saxophone Level or BATTERY BT?

Saxophone Level ships an update fortnightly, and BATTERY BT every 2 months. Most recently, Saxophone Level was updated on October 30, 2026 and BATTERY BT on October 30, 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.*