# 2 Field % Calc vs Proietta

The clearest difference is iOS requirement: Proietta at 11.0 against 2 Field % Calc's 15.6. On price, update cadence, 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.

2 Field % Calc ships an update every 30 months, Proietta every 58 months. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 2 Field % Calc | Proietta |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/2-field-calc/id454060465/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 30 months** | Every 58 months |
| Monetization | Free | — |
| Size | 1 MB | 2 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Toshihiro Nakane](https://appshunter.io/developer/6799290769) | [Marco Piai](https://appshunter.io/developer/1513185761) |

## What reviewers say

### 2 Field % Calc

[App page](https://appshunter.io/ios/app/2-field-calc/id454060465)

Calculate percentages between two numbers for various uses, including resizing images and determining magnification. Ideal for DTP and web designers needing quick calculations.

**Highlights:** Calculate percent between two numbers, Image resizing by percentage, Magnification calculation, Useful for DTP and web designers

**Features:** macOS Compatibility

**In-app purchases:** none


### Proietta

[App page](https://appshunter.io/ios/app/proietta/id1513185762)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 2 Field % Calc free?

2 Field % Calc is free to download, with no in-app purchases.

### Is Proietta free?

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

### Do 2 Field % Calc or Proietta have ads?

Neither 2 Field % Calc nor Proietta shows ads.

### Which is updated more often, 2 Field % Calc or Proietta?

2 Field % Calc ships an update every 30 months, and Proietta every 58 months. Most recently, 2 Field % Calc was updated on October 28, 2026 and Proietta on October 25, 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.*