# ChargeSpectrum vs D

The clearest difference is update cadence: D at every 2 months against ChargeSpectrum's every 5 months. ChargeSpectrum's advantage is iOS requirement (13.0 vs 15.6). On price, ads, 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.

ChargeSpectrum ships an update every 5 months, D every 2 months. The most recent releases landed on September 12, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | ChargeSpectrum | D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/d-visual/id6612027870/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 32 MB | 78 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Clinicspectrum, Inc.](https://appshunter.io/developer/932413384) | [D-visual Medical Technology Co., Ltd](https://appshunter.io/developer/1761335012) |

## What reviewers say

### ChargeSpectrum

[App page](https://appshunter.io/ios/app/chargespectrum/id1004943613)

**Features:** macOS Compatibility

**In-app purchases:** none


### D

[App page](https://appshunter.io/ios/app/d-visual/id6612027870)

This platform revolutionizes AI-assisted surgery and remote diagnosis. It enhances surgical skills through demonstration and collaboration, ensuring precision with AI assistance and quality control. Access secure cloud storage for medical data anytime, anywhere.

**Highlights:** AI-assisted surgery, Remote diagnosis, Surgical demonstration, Real-time collaboration, Cloud storage, AI-powered quality control, Surgical summaries

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ChargeSpectrum free?

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

### Is D free?

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

### Do ChargeSpectrum or D have ads?

Neither ChargeSpectrum nor D shows ads.

### Which is updated more often, ChargeSpectrum or D?

ChargeSpectrum ships an update every 5 months, and D every 2 months. Most recently, ChargeSpectrum was updated on September 12, 2026 and D on June 4, 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.*