# DB Killer Calculator vs VoltLog

The clearest difference is in-app purchases: DB Killer Calculator at none against VoltLog's 3. DB Killer Calculator also leads on device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. VoltLog sells 3 in-app purchases, starting at $9.99 per month. DB Killer Calculator asks for nothing beyond the download.

## The numbers

| Metric | DB Killer Calculator | VoltLog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 10 days |
| Size | 2 MB | 54 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Remigiusz Nowacki](https://appshunter.io/developer/1883665241) | [Filip Rusin](https://appshunter.io/developer/1883368937) |

## What reviewers say

### DB Killer Calculator

[App page](https://appshunter.io/ios/app/db-killer-calculator/id6764839871)

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

**In-app purchases:** none


### VoltLog

[App page](https://appshunter.io/ios/app/voltlog-battery-logs/id6766874761)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $9.99 | per month |
| Yearly Pro | $39.99 | per year |
| Lifetime Pro | $99.99 | one-time |


## Frequently asked questions

### Is DB Killer Calculator free?

DB Killer Calculator is free to download, with no in-app purchases.

### Is VoltLog free?

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

### Do DB Killer Calculator or VoltLog have ads?

Neither DB Killer Calculator nor VoltLog shows ads.

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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.*