# Oncall Tech vs NRG Config

The clearest difference is iOS requirement: NRG Config at 11.0 against Oncall Tech's 15. 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.

Oncall Tech ships an update weekly, NRG Config every 2 weeks. Both last shipped on October 28, 2026.

## The numbers

| Metric | Oncall Tech | NRG Config |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Size | 130 MB | 12 MB |
| Requires iOS | 15 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [On Call Technical Support Ltd](https://appshunter.io/developer/1798638401) | [NRG CHARGE LTD](https://appshunter.io/developer/1835874010) |

## What reviewers say

### Oncall Tech

[App page](https://appshunter.io/ios/app/oncall-tech/id6742478244)

**Features:** macOS Compatibility

**In-app purchases:** none


### NRG Config

[App page](https://appshunter.io/ios/app/nrg-config/id6751577216)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Oncall Tech free?

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

### Is NRG Config free?

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

### Do Oncall Tech or NRG Config have ads?

Neither Oncall Tech nor NRG Config shows ads.

### Which is updated more often, Oncall Tech or NRG Config?

Oncall Tech ships an update weekly, and NRG Config every 2 weeks. Most recently, Oncall Tech was updated on October 28, 2026 and NRG Config on October 28, 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.*