# Datovka.cz vs Calculator XplusY

The clearest difference is price: Datovka.cz at Free against Calculator XplusY's $1.99. Calculator XplusY's advantage is update cadence (fortnightly vs every 6 weeks). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Datovka.cz is free to download; Calculator XplusY costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Datovka.cz ships an update every 6 weeks, Calculator XplusY fortnightly. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Datovka.cz | Calculator XplusY |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.5 (44 ratings)](https://appshunter.io/ios/app/datovkacz/id1185445299/reviews)** | — |
| Number of ratings | **44** | — |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 37 MB | 18 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CZ.NIC, z.s.p.o.](https://appshunter.io/developer/386775306) | [crea:do s.r.o.](https://appshunter.io/developer/1816197473) |

## What reviewers say

### Datovka.cz

[App page](https://appshunter.io/ios/app/datovkacz/id1185445299)

Manage your Czech Republic data mailboxes on the go. Check mailbox status, read messages, create and send data messages, and forward attachments. It also allows searching for data mailboxes and submitting electronic filings for public administration services.

**Highlights:** Check data mailbox status, Read received and sent messages, Create and send data messages, Forward messages and attachments, Export messages, Search for data mailboxes, Submit electronic filings

**In-app purchases:** none


### Calculator XplusY

[App page](https://appshunter.io/ios/app/calculator-xplusy/id6746332566)

**In-app purchases:** none


## Frequently asked questions

### Is Datovka.cz free?

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

### Is Calculator XplusY free?

Calculator XplusY costs $1.99, with no in-app purchases.

### Do Datovka.cz or Calculator XplusY have ads?

Neither Datovka.cz nor Calculator XplusY shows ads.

### Which is updated more often, Datovka.cz or Calculator XplusY?

Datovka.cz ships an update every 6 weeks, and Calculator XplusY fortnightly. Most recently, Datovka.cz was updated on November 2, 2026 and Calculator XplusY on October 30, 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.*