# Calculatrix vs Tango Event

The clearest difference is ads: Tango Event at none against Calculatrix's shown. Tango Event also leads on update cadence (fortnightly vs every 4 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Calculatrix ships an update every 4 months, Tango Event fortnightly. The most recent releases landed on September 22, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Calculatrix | Tango Event |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Fortnightly** |
| Size | 30 MB | 57 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kangah Jacques N'GUESSAN](https://appshunter.io/developer/1161253245) | [HUNGVIET TECHNOLOGY & INVESTMENT TRADING JOINT STOCK COMPANY](https://appshunter.io/developer/1498951825) |

## What reviewers say

### Calculatrix

[App page](https://appshunter.io/ios/app/calculatrix/id1448024245)

**Features:** macOS Compatibility

**In-app purchases:** none


### Tango Event

[App page](https://appshunter.io/ios/app/tango-event/id1464123843)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calculatrix free?

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

### Is Tango Event free?

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

### Do Calculatrix or Tango Event have ads?

Calculatrix shows ads; Tango Event does not.

### Which is updated more often, Calculatrix or Tango Event?

Calculatrix ships an update every 4 months, and Tango Event fortnightly. Most recently, Calculatrix was updated on September 22, 2026 and Tango Event on September 11, 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.*