# Speaker Box Lite vs BT System

The clearest difference is rating: Speaker Box Lite at 4.1 against BT System's 2.0. Speaker Box Lite also leads on ratings volume (339 vs 1). BT System's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Speaker Box Lite sells 3 in-app purchases, starting at $4.49 per 7 days. BT System asks for nothing beyond the download.

Speaker Box Lite holds the better App Store score, 4.1 against 2.0. That said, the two scores are not equally well evidenced: Speaker Box Lite has 339 ratings behind it against 1, so its average is the more settled of the two.

Speaker Box Lite ships an update every 11 days, BT System weekly. The most recent releases landed on October 3, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Speaker Box Lite | BT System |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (339 ratings)](https://appshunter.io/ios/app/speaker-box-lite/id898625526/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/bt-system/id1501788263/reviews) |
| Number of ratings | **339** | 1 |
| Positive reviews | 61.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 11 days | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 160 MB | 21 MB |
| Requires iOS | 15.1 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alexey Abdulin](https://appshunter.io/developer/893545070) | [凤军 程](https://appshunter.io/developer/873913814) |

## What reviewers say

### Speaker Box Lite

[App page](https://appshunter.io/ios/app/speaker-box-lite/id898625526)

Calculate subwoofer box volumes and design acoustic systems with detailed charts and parameter generation. Supports various enclosure types and includes a shared online speaker database. Offers cloud project saving and PRO features via subscription.

**Highlights:** Subwoofer box volume calculation, Support for multiple enclosure types, Amplitude, phase, and SPL charts, Parameter generation for vented boxes, Port and displacement volume calculation, Cloud project saving, Shared online speaker database

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Week PRO | $4.49 | per 7 days |
| Month plan | $7.99 | per month |
| PRO Account | $8.99 | per month |

**What reviewers like**

- 📊 Comprehensive graphing and visualization tools
- 💾 Extensive speaker driver database with TS parameters
- 📐 Accurate enclosure calculations for sealed and ported boxes
- ✂️ Automatic cut list generation for DIY building
- 💡 Intuitive interface for beginners and experts

**What reviewers complain about**

- 💰 Expensive subscription model ($5-7/month or 400 rubles)
- 🚫 Limited free version functionality
- 🐛 Frequent crashes and stability issues
- ❌ Inconsistent calculation accuracy
- 🔐 Billing/subscription verification problems

**Reported bugs**

- App crashes when adjusting VB/FB parameters
- Crashes on certain parameter combinations requiring reinstall
- Drawing/3D model generation hangs indefinitely
- Subscription payment charged multiple times
- Pro version access denied despite active payment

**Requested features**

- One-time purchase option instead of subscription
- Portuguese language support (PT-BR)
- Air velocity graphs
- Complete 3D model generation with final drawings
- Bandpass 4th order enclosure support


### BT System

[App page](https://appshunter.io/ios/app/bt-system/id1501788263)

Start your car remotely using your smartphone, eliminating the need to carry physical keys. This app provides convenient access to your vehicle through your mobile device.

**Highlights:** Remote car starting, Keyless car access, Smartphone control, Convenient vehicle access

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Speaker Box Lite free?

Speaker Box Lite is free to download, with in-app purchases available.

### Is BT System free?

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

### Which has better reviews, Speaker Box Lite or BT System?

Speaker Box Lite is rated higher. Speaker Box Lite averages 4.1 out of 5 from 339 ratings, while BT System averages 2.0 from 1 ratings.

### Do Speaker Box Lite or BT System have ads?

Speaker Box Lite shows ads; BT System does not.

### Which is updated more often, Speaker Box Lite or BT System?

Speaker Box Lite ships an update every 11 days, and BT System weekly. Most recently, Speaker Box Lite was updated on October 3, 2026 and BT System on September 16, 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.*