# TeleCMS vs Voltage Calculator

The clearest difference is iOS requirement: TeleCMS at 13.0 against Voltage Calculator's 15.0. 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.

TeleCMS ships an update every 9 days, Voltage Calculator every 2 weeks. The most recent releases landed on October 8, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | TeleCMS | Voltage Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 2 weeks |
| Size | 49 MB | 72 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [梦之源科技集团有限公司](https://appshunter.io/developer/1636661144) | [ESDEV Teknoloji](https://appshunter.io/developer/1693053468) |

## What reviewers say

### TeleCMS

[App page](https://appshunter.io/ios/app/telecms/id6761587868)

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

**In-app purchases:** none


### Voltage Calculator

[App page](https://appshunter.io/ios/app/voltage-calculator/id6790529321)

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

**In-app purchases:** none


## Frequently asked questions

### Is TeleCMS free?

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

### Is Voltage Calculator free?

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

### Do TeleCMS or Voltage Calculator have ads?

Neither TeleCMS nor Voltage Calculator shows ads.

### Which is updated more often, TeleCMS or Voltage Calculator?

TeleCMS ships an update every 9 days, and Voltage Calculator every 2 weeks. Most recently, TeleCMS was updated on October 8, 2026 and Voltage Calculator on October 3, 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.*