# E vs Voltsy

The clearest difference is in-app purchases: E at none against Voltsy's 1. E also leads on ads (none vs shown) and device support (3 vs 1). Voltsy's advantage is update cadence (every 3 weeks vs every 8 months). On price there is nothing between them.

Both are free to download. Voltsy sells 1 one-off in-app purchase. E asks for nothing beyond the download.

E ships an update every 8 months, Voltsy every 3 weeks. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | E | Voltsy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Size | 31 MB | 5 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Micronova Srl](https://appshunter.io/developer/1338789037) | [Levin David Schwab](https://appshunter.io/developer/1896432297) |

## What reviewers say

### E

[App page](https://appshunter.io/ios/app/e-tec/id6746446566)

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

**In-app purchases:** none


### Voltsy

[App page](https://appshunter.io/ios/app/voltsy-battery-care-buddy/id6778094814)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Voltsy Pro | $4.99 | one-time |


## Frequently asked questions

### Is E free?

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

### Is Voltsy free?

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

### Do E or Voltsy have ads?

Voltsy shows ads; E does not.

### Which is updated more often, E or Voltsy?

E ships an update every 8 months, and Voltsy every 3 weeks. Most recently, E was updated on October 30, 2026 and Voltsy on November 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.*