# FieldKit.org vs Supa Sudoku

The clearest difference is in-app purchases: FieldKit.org at none against Supa Sudoku's 6. FieldKit.org also leads on ads (none vs shown). Supa Sudoku's advantage is update cadence (every 9 days vs every 4 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Supa Sudoku sells 6 in-app purchases, starting at $2.99 per month. FieldKit.org asks for nothing beyond the download.

FieldKit.org ships an update every 4 months, Supa Sudoku every 9 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | FieldKit.org | Supa Sudoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/fieldkitorg/id1463631293/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 9 days** |
| Monetization | Free | — |
| Size | 86 MB | 32 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Conservify](https://appshunter.io/developer/1463631292) | [Geng Tang](https://appshunter.io/developer/1714227138) |

## What reviewers say

### FieldKit.org

[App page](https://appshunter.io/ios/app/fieldkitorg/id1463631293)

This app provides low-cost hardware and a mobile platform for environmental sensing, data management, and community engagement. It allows users to monitor and advocate for their surroundings by collecting, analyzing, and sharing environmental data.

**Highlights:** Easy-to-use environmental sensors, Data management and analysis platform, Real-time sensor data visualization, Customizable data collection schedules, Data download in multiple formats, Community engagement and discussions

**In-app purchases:** none


### Supa Sudoku

[App page](https://appshunter.io/ios/app/supa-sudoku/id6470796858)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Daily Sudoku Puzzles (1 month) | $2.99 | per month |
| Sudoku OCR (1 Month) | $2.99 | per month |
| Sudoku Logical Hints (1 month) | $2.99 | per month |
| Daily Sudoku Puzzles (1 year) | $17.99 | per year |
| Sudoku OCR for 1 year | $17.99 | per year |
| Sudoku Logical Hints (1 Year) | $17.99 | per year |


## Frequently asked questions

### Is FieldKit.org free?

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

### Is Supa Sudoku free?

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

### Do FieldKit.org or Supa Sudoku have ads?

Supa Sudoku shows ads; FieldKit.org does not.

### Which is updated more often, FieldKit.org or Supa Sudoku?

FieldKit.org ships an update every 4 months, and Supa Sudoku every 9 days. Most recently, FieldKit.org was updated on November 3, 2026 and Supa Sudoku 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.*