# Voltage Drop Pro vs BareBolus

The clearest difference is price: BareBolus at Free against Voltage Drop Pro's $3.99. BareBolus also leads on iOS requirement (15.6 vs 17.5). On update cadence, ads, in-app purchases and device support there is nothing between them.

BareBolus is free to download; Voltage Drop Pro costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. Both last shipped on October 5, 2026.

## The numbers

| Metric | Voltage Drop Pro | BareBolus |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 15 MB | 11 MB |
| Requires iOS | 17.5 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Snappy Appz Inc.](https://appshunter.io/developer/375591377) | [DiaBolus AS](https://appshunter.io/developer/1706892558) |

## What reviewers say

### Voltage Drop Pro

[App page](https://appshunter.io/ios/app/voltage-drop-pro/id1601052433)

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

**In-app purchases:** none


### BareBolus

[App page](https://appshunter.io/ios/app/barebolus/id6466100147)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Voltage Drop Pro free?

Voltage Drop Pro costs $3.99, with no in-app purchases.

### Is BareBolus free?

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

### Do Voltage Drop Pro or BareBolus have ads?

Neither Voltage Drop Pro nor BareBolus shows ads.

### Which is updated more often, Voltage Drop Pro or BareBolus?

Voltage Drop Pro ships an update every 2 months, and BareBolus every 2 months. Most recently, Voltage Drop Pro was updated on October 5, 2026 and BareBolus on October 5, 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.*