# D vs Second Opinion

D and Second Opinion are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

D ships an update every 3 weeks, Second Opinion every 2 weeks. The most recent releases landed on October 12, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | D | Second Opinion |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Size | 28 MB | 182 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [DrBridge](https://appshunter.io/developer/600816078) | [Second opinion](https://appshunter.io/developer/1678076903) |

## What reviewers say

### D

[App page](https://appshunter.io/ios/app/d-circles/id6450398463)

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

**In-app purchases:** none


### Second Opinion

[App page](https://appshunter.io/ios/app/second-opinion-doctors/id6590627881)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is D free?

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

### Is Second Opinion free?

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

### Do D or Second Opinion have ads?

Neither D nor Second Opinion shows ads.

### Which is updated more often, D or Second Opinion?

D ships an update every 3 weeks, and Second Opinion every 2 weeks. Most recently, D was updated on October 12, 2026 and Second Opinion on October 15, 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.*