# Voltas BMS vs Stopwatch

The clearest difference is in-app purchases: Voltas BMS at none against Stopwatch's 2. Voltas BMS also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Stopwatch sells 2 in-app purchases, starting at $9.99 per 7 days. Voltas BMS asks for nothing beyond the download.

Voltas BMS ships an update fortnightly, Stopwatch every 4 weeks. The most recent releases landed on October 8, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Voltas BMS | Stopwatch |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 weeks |
| Size | 35 MB | 6 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [VOLTAKER Kereskedelmi Korlatolt Felelossegu Tarsasag](https://appshunter.io/developer/1577347073) | [Phuc Pham](https://appshunter.io/developer/1893081423) |

## What reviewers say

### Voltas BMS

[App page](https://appshunter.io/ios/app/voltas-bms/id1568684666)

**Features:** macOS Compatibility

**In-app purchases:** none


### Stopwatch

[App page](https://appshunter.io/ios/app/stopwatch-lap-split-timer/id6772277774)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $9.99 | per 7 days |
| Yearly | $49.99 | per year |


## Frequently asked questions

### Is Voltas BMS free?

Voltas BMS is free to download, with no in-app purchases.

### Is Stopwatch free?

Stopwatch is free to download, with in-app purchases available.

### Do Voltas BMS or Stopwatch have ads?

Neither Voltas BMS nor Stopwatch shows ads.

### Which is updated more often, Voltas BMS or Stopwatch?

Voltas BMS ships an update fortnightly, and Stopwatch every 4 weeks. Most recently, Voltas BMS was updated on October 8, 2026 and Stopwatch on October 12, 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.*