# DRMemory vs 事務電卓

The clearest difference is in-app purchases: 事務電卓 at none against DRMemory's 1. 事務電卓 also leads on ads (none vs shown) and update cadence (every 4 days vs fortnightly). DRMemory's advantage is iOS requirement (15.0 vs 17.0). On price and device support there is nothing between them.

Both are free to download. DRMemory sells 1 one-off in-app purchase. 事務電卓 asks for nothing beyond the download.

DRMemory ships an update fortnightly, 事務電卓 every 4 days. The most recent releases landed on October 14, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | DRMemory | 事務電卓 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/drmemory/id586207285/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 52.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | Ad-supported | — |
| Size | 9 MB | 1 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TeamHB](https://appshunter.io/developer/327499889) | [Hideki Sato](https://appshunter.io/developer/6793530291) |

## What reviewers say

### DRMemory

[App page](https://appshunter.io/ios/app/drmemory/id586207285)

This utility app helps you manage your iPhone's storage by identifying and removing duplicate photos, files, and contacts. It provides a clear overview of your memory usage and allows you to review items before deletion, all without uploading your data to the cloud.

**Highlights:** Check iPhone memory usage, Visualize folder contents, Find duplicate photos, Find duplicate files, Clean duplicate contacts, No cloud uploads, No tracking

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads Forever | $2.99 | one-time |


### 事務電卓

[App page](https://appshunter.io/ios/app/id6813061061)

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

**In-app purchases:** none


## Frequently asked questions

### Is DRMemory free?

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

### Is 事務電卓 free?

事務電卓 is free to download, with no in-app purchases.

### Do DRMemory or 事務電卓 have ads?

DRMemory shows ads; 事務電卓 does not.

### Which is updated more often, DRMemory or 事務電卓?

DRMemory ships an update fortnightly, and 事務電卓 every 4 days. Most recently, DRMemory was updated on October 14, 2026 and 事務電卓 on October 10, 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.*