# Robot Counter vs Dev Calc

The clearest difference is in-app purchases: Robot Counter at none against Dev Calc's 1. Dev Calc's advantage is update cadence (every 2 months vs every 20 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Dev Calc sells 1 in-app purchase, starting at $1.99 per month. Robot Counter asks for nothing beyond the download.

Robot Counter ships an update every 20 months, Dev Calc every 2 months. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Robot Counter | Dev Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (2 ratings)](https://appshunter.io/ios/app/dev-calc-developer-calculator/id1576503219/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 60.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 20 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 13 MB | 51 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kyohei Hakka](https://appshunter.io/developer/1279110012) | [Toshiya Hondo](https://appshunter.io/developer/1571875732) |

## What reviewers say

### Robot Counter

[App page](https://appshunter.io/ios/app/robot-counter/id1280382532)

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

**In-app purchases:** none


### Dev Calc

[App page](https://appshunter.io/ios/app/dev-calc-developer-calculator/id1576503219)

This app assists developers and programmers with immediate numeric conversions between binary, octal, decimal, and hexadecimal formats. It also provides tools for generating color codes from RGB, HSL, and HSV values, with a color picker and preset options.

**Highlights:** Numeric conversion (Bin, Oct, Dec, Hex), Signed/Unsigned options, Adjustable bit sizes (8, 16, 32, 64), RGB, HSL, HSV color code generation, Color picker, Preset color options

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads (Monthly) | $1.99 | per month |


## Frequently asked questions

### Is Robot Counter free?

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

### Is Dev Calc free?

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

### Do Robot Counter or Dev Calc have ads?

Both Robot Counter and Dev Calc show ads.

### Which is updated more often, Robot Counter or Dev Calc?

Robot Counter ships an update every 20 months, and Dev Calc every 2 months. Most recently, Robot Counter was updated on October 5, 2026 and Dev Calc on October 7, 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.*