# Voltsec vs ZenTerm

The clearest difference is iOS requirement: Voltsec at 12.2 against ZenTerm's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Voltsec ships an update every 2 weeks, ZenTerm every 9 days. The most recent releases landed on September 17, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Voltsec | ZenTerm |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Size | 64 MB | 50 MB |
| Requires iOS | **12.2** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Retinasoft Security, LLC](https://appshunter.io/developer/1506080230) | [Yuki Nakano](https://appshunter.io/developer/1886708687) |

## What reviewers say

### Voltsec

[App page](https://appshunter.io/ios/app/voltsec/id1506080231)

**Features:** macOS Compatibility

**In-app purchases:** none


### ZenTerm

[App page](https://appshunter.io/ios/app/zenterm/id6760935103)

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

**In-app purchases:** none


## Frequently asked questions

### Is Voltsec free?

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

### Is ZenTerm free?

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

### Do Voltsec or ZenTerm have ads?

Neither Voltsec nor ZenTerm shows ads.

### Which is updated more often, Voltsec or ZenTerm?

Voltsec ships an update every 2 weeks, and ZenTerm every 9 days. Most recently, Voltsec was updated on September 17, 2026 and ZenTerm on September 18, 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.*