# Robo Flags. vs Dozenal Calc

The clearest difference is ads: Dozenal Calc at none against Robo Flags.'s shown. Dozenal Calc also leads on update cadence (every 3 days vs every 4 months) and device support (5 vs 3). On price 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.

Robo Flags. ships an update every 4 months, Dozenal Calc every 3 days. The most recent releases landed on October 2, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Robo Flags. | Dozenal Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 3 days** |
| Size | 59 MB | 32 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [MASAHIRO MIZUTANI](https://appshunter.io/developer/368158224) | [Eric Naville](https://appshunter.io/developer/6777149198) |

## What reviewers say

### Robo Flags.

[App page](https://appshunter.io/ios/app/robo-flags/id675525282)

**Features:** Vision Pro support

**In-app purchases:** none


### Dozenal Calc

[App page](https://appshunter.io/ios/app/dozenal-calc/id6777149196)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Robo Flags. free?

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

### Is Dozenal Calc free?

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

### Do Robo Flags. or Dozenal Calc have ads?

Robo Flags. shows ads; Dozenal Calc does not.

### Which is updated more often, Robo Flags. or Dozenal Calc?

Robo Flags. ships an update every 4 months, and Dozenal Calc every 3 days. Most recently, Robo Flags. was updated on October 2, 2026 and Dozenal Calc on October 9, 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.*