# Čistá Trojka vs DIGITCA

The clearest difference is in-app purchases: Čistá Trojka at none against DIGITCA's 1. Čistá Trojka also leads on iOS requirement (13 vs 17.0). DIGITCA's advantage is update cadence (every 2 days vs every 14 months). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. DIGITCA sells 1 one-off in-app purchase. Čistá Trojka asks for nothing beyond the download.

Čistá Trojka ships an update every 14 months, DIGITCA every 2 days. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Čistá Trojka | DIGITCA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/digitca/id6766617649/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 2 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 59 MB |
| Requires iOS | **13** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 9+ | 4+ |
| Developer | [Marek Demcak](https://appshunter.io/developer/713948501) | [matous petran](https://appshunter.io/developer/1628862850) |

## What reviewers say

### Čistá Trojka

[App page](https://appshunter.io/ios/app/cista-trojka/id1322813185)

This app allows residents and visitors to report litter and other messes in Prague 3. It aims to improve the local environment by highlighting issues and encouraging community participation in maintaining clean public spaces.

**Highlights:** Report litter and messes, Improve local environment, Community participation, Maintain clean public spaces, Highlight environmental issues

**Features:** macOS Compatibility

**In-app purchases:** none


### DIGITCA

[App page](https://appshunter.io/ios/app/digitca/id6766617649)

This app provides a persistent, scrollable tape calculator that remembers every entry. Edit past numbers and see totals update live. It includes conversion tools and natural language input for calculations.

**Highlights:** Persistent scrollable tape, Editable calculations, Autosave functionality, Unit and currency converter, Natural language input, Scientific keyboard, Interactive Home Screen widget

**Features:** Family Sharing, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DIGITCA Full | $5.99 | one-time |


## Frequently asked questions

### Is Čistá Trojka free?

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

### Is DIGITCA free?

DIGITCA is free to download, with in-app purchases available.

### Do Čistá Trojka or DIGITCA have ads?

Neither Čistá Trojka nor DIGITCA shows ads.

### Which is updated more often, Čistá Trojka or DIGITCA?

Čistá Trojka ships an update every 14 months, and DIGITCA every 2 days. Most recently, Čistá Trojka was updated on November 2, 2026 and DIGITCA on October 31, 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.*