# EbbyCalc vs VoltLog

The clearest difference is in-app purchases: EbbyCalc at none against VoltLog's 3. EbbyCalc also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.0). VoltLog's advantage is update cadence (every 10 days vs every 9 months). On price and ads there is nothing between them.

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

EbbyCalc ships an update every 9 months, VoltLog every 10 days. The most recent releases landed on September 21, 2026 and July 17, 2026 respectively.

## The numbers

| Metric | EbbyCalc | VoltLog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 10 days** |
| Size | 1 MB | 54 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ansel Rognlie](https://appshunter.io/developer/1489769922) | [Filip Rusin](https://appshunter.io/developer/1883368937) |

## What reviewers say

### EbbyCalc

[App page](https://appshunter.io/ios/app/ebbycalc/id1489769923)

**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 EbbyCalc free?

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

### Is VoltLog free?

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

### Do EbbyCalc or VoltLog have ads?

Neither EbbyCalc nor VoltLog shows ads.

### Which is updated more often, EbbyCalc or VoltLog?

EbbyCalc ships an update every 9 months, and VoltLog every 10 days. Most recently, EbbyCalc was updated on September 21, 2026 and VoltLog on July 17, 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.*