# SIGMA SUBATO vs ChessTools.it

The clearest difference is update cadence: ChessTools.it at every 3 days against SIGMA SUBATO's monthly. SIGMA SUBATO's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 17.0). On price, 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.

SIGMA SUBATO ships an update monthly, ChessTools.it every 3 days. The most recent releases landed on September 29, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | SIGMA SUBATO | ChessTools.it |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/sigma-subato/id6738994161/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Free | — |
| Size | 24 MB | 3 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [ID&A S.r.l.](https://appshunter.io/developer/1446283055) | [Giorgio Donnoli](https://appshunter.io/developer/6777981338) |

## What reviewers say

### SIGMA SUBATO

[App page](https://appshunter.io/ios/app/sigma-subato/id6738994161)

This application allows users to track and monitor their waste disposal for street containers and collection centers. It provides insights into user behavior, optimizes waste management, and offers guidance for proper disposal.

**Highlights:** Track waste disposal, Monitor street containers, Manage collection centers, View disposal history, Filter data by material and period, Consult data in lists and graphs, Get proper disposal guidance

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

**In-app purchases:** none


### ChessTools.it

[App page](https://appshunter.io/ios/app/chesstoolsit/id6791041579)

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

**In-app purchases:** none


## Frequently asked questions

### Is SIGMA SUBATO free?

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

### Is ChessTools.it free?

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

### Do SIGMA SUBATO or ChessTools.it have ads?

Neither SIGMA SUBATO nor ChessTools.it shows ads.

### Which is updated more often, SIGMA SUBATO or ChessTools.it?

SIGMA SUBATO ships an update monthly, and ChessTools.it every 3 days. Most recently, SIGMA SUBATO was updated on September 29, 2026 and ChessTools.it 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.*