# ACalcM vs 常時安全セキュリティ24

The clearest difference is review sentiment: ACalcM at 90% against 常時安全セキュリティ24's 25%. ACalcM also leads on iOS requirement (15.6 vs 18.0). 常時安全セキュリティ24's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. ACalcM sells 1 one-off in-app purchase. 常時安全セキュリティ24 asks for nothing beyond the download.

ACalcM ships an update every 8 months, 常時安全セキュリティ24 every 4 months. The most recent releases landed on September 23, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | ACalcM | 常時安全セキュリティ24 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (26 ratings)](https://appshunter.io/ios/app/acalcm/id605657598/reviews)** | — |
| Number of ratings | **26** | — |
| Positive reviews | **90.0% of reviews** | 25.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 8 months | **Every 4 months** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 13 MB | 308 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Asoft.iOS](https://appshunter.io/developer/562152712) | [NIFTY Corporation](https://appshunter.io/developer/336576796) |

## What reviewers say

### ACalcM

[App page](https://appshunter.io/ios/app/acalcm/id605657598)

This calculator app enhances standard functionality with an editable list to track numbers and operators. It allows for easy modification of entries, row insertion, and calculation sharing via email. Advanced features include memory functions, rounding options, and design customization.

**Highlights:** Editable calculation list, Memory function, Row insert function, Email calculation results, Rounding function, Design customization

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


### 常時安全セキュリティ24

[App page](https://appshunter.io/ios/app/24/id1497243069)

Protect your iPhone and iPad from online threats with this security service. It offers browser and banking protection for safe online transactions, and parental controls to manage children's device usage and access to inappropriate websites.

**Highlights:** Browser protection, Banking protection, Parental controls, Privacy protection, Password management, Personal information leak monitoring, SMS scam protection

**Features:** macOS Compatibility, Safari Extension

**In-app purchases:** none


## Frequently asked questions

### Is ACalcM free?

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

### Is 常時安全セキュリティ24 free?

常時安全セキュリティ24 is free to download, with no in-app purchases.

### Do ACalcM or 常時安全セキュリティ24 have ads?

ACalcM shows ads; 常時安全セキュリティ24 does not.

### Which is updated more often, ACalcM or 常時安全セキュリティ24?

ACalcM ships an update every 8 months, and 常時安全セキュリティ24 every 4 months. Most recently, ACalcM was updated on September 23, 2026 and 常時安全セキュリティ24 on September 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.*