# Dev Calculator vs ZKIOT

The clearest difference is ads: Dev Calculator at none against ZKIOT's shown. ZKIOT's advantage is iOS requirement (12.0 vs 14.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Dev Calculator ships an update every 11 days, ZKIOT fortnightly. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Dev Calculator | ZKIOT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/dev-calculator/id1557104193/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 11 days** | Fortnightly |
| Monetization | Free | — |
| Size | 0 MB | 64 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Scott Lassen](https://appshunter.io/developer/1773765380) | [Kunming Laoxu Technology Co., Ltd](https://appshunter.io/developer/1619481083) |

## What reviewers say

### Dev Calculator

[App page](https://appshunter.io/ios/app/dev-calculator/id1557104193)

A free, ad-free developer calculator focused on bitwise operations and base conversions. It supports unsigned integers up to 64 bits and includes features like shifting, rotating, and casting.

**Highlights:** Bitwise operations (AND, NOT, OR, XOR), Shifting and rotating, Casting support, 64-bit unsigned integer support, Base conversions, No ads

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

**In-app purchases:** none


### ZKIOT

[App page](https://appshunter.io/ios/app/zkiot/id1658915247)

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

**In-app purchases:** none


## Frequently asked questions

### Is Dev Calculator free?

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

### Is ZKIOT free?

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

### Do Dev Calculator or ZKIOT have ads?

ZKIOT shows ads; Dev Calculator does not.

### Which is updated more often, Dev Calculator or ZKIOT?

Dev Calculator ships an update every 11 days, and ZKIOT fortnightly. Most recently, Dev Calculator was updated on October 7, 2026 and ZKIOT on October 13, 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.*