# Simple Hex Calc vs Custom Alarm Clock & Timer

The clearest difference is price: Custom Alarm Clock & Timer at Free against Simple Hex Calc's $0.99. Custom Alarm Clock & Timer also leads on update cadence (every 3 days vs every 5 months) and iOS requirement (17.0 vs 27.0). Simple Hex Calc's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

Custom Alarm Clock & Timer is free to download; Simple Hex Calc costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Simple Hex Calc ships an update every 5 months, Custom Alarm Clock & Timer every 3 days. The most recent releases landed on October 15, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Simple Hex Calc | Custom Alarm Clock & Timer |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.5 (8 ratings)](https://appshunter.io/ios/app/simple-hex-calc/id335773208/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 94.4% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 3 days** |
| Monetization | Paid | — |
| Size | 1 MB | 35 MB |
| Requires iOS | 27.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hiroki Ishiura](https://appshunter.io/developer/335773211) | [月娇 章](https://appshunter.io/developer/6806597456) |

## What reviewers say

### Simple Hex Calc

[App page](https://appshunter.io/ios/app/simple-hex-calc/id335773208)

This utility app provides IT programmers with a pocket calculator for performing arithmetic and logical operations on numbers in various bases. It offers extensive configuration options for bit length, signed/unsigned modes, and data display formats, with a reference manual included.

**Highlights:** Arithmetic and logical operations, Multiple number base support (2/8/10/16), Bit shift, rotate, set, clear, and order operations, Memory operations (save, load, swap), Configurable bit length and signed/unsigned modes, Cut, copy, and paste results, Reference manual included

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

**In-app purchases:** none


### Custom Alarm Clock & Timer

[App page](https://appshunter.io/ios/app/custom-alarm-clock-and-timer/id6808055524)

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

**In-app purchases:** none


## Frequently asked questions

### Is Simple Hex Calc free?

Simple Hex Calc costs $0.99, with no in-app purchases.

### Is Custom Alarm Clock & Timer free?

Custom Alarm Clock & Timer is free to download, with no in-app purchases.

### Do Simple Hex Calc or Custom Alarm Clock & Timer have ads?

Custom Alarm Clock & Timer shows ads; Simple Hex Calc does not.

### Which is updated more often, Simple Hex Calc or Custom Alarm Clock & Timer?

Simple Hex Calc ships an update every 5 months, and Custom Alarm Clock & Timer every 3 days. Most recently, Simple Hex Calc was updated on October 15, 2026 and Custom Alarm Clock & Timer on October 11, 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.*