# Doctor Shield vs Trombone Level

The clearest difference is in-app purchases: Trombone Level at none against Doctor Shield's 4. Trombone Level also leads on iOS requirement (15.0 vs 17.5). Doctor Shield's advantage is ads (none vs shown) and update cadence (every 6 days vs every 2 weeks). On price and device support there is nothing between them.

Both are free to download. Doctor Shield sells 4 in-app purchases, starting at $7.99 per 7 days. Trombone Level asks for nothing beyond the download.

Doctor Shield ships an update every 6 days, Trombone Level every 2 weeks. The most recent releases landed on October 2, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Doctor Shield | Trombone Level |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (12 ratings)](https://appshunter.io/ios/app/doctor-shield-security-boost/id6736618922/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 87.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 6 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 53 MB | 40 MB |
| Requires iOS | 17.5 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Raven Panna](https://appshunter.io/developer/1765725341) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### Doctor Shield

[App page](https://appshunter.io/ios/app/doctor-shield-security-boost/id6736618922)

Optimize your iPhone's battery life and performance with this utility app. Analyze battery status, estimate usage time, and receive personalized tips to extend your device's lifespan and maintain its health.

**Highlights:** Analyze battery status and lifespan, Estimate remaining usage time, Receive energy-saving tips, Device maintenance checklist, Monitor app energy consumption

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekabonnement | $7.99 | per 7 days |
| Week proefabonnement | $7.99 | per 7 days |
| Weekabonnement | $9.99 | per 7 days |
| Week proefabonnement | $9.99 | per 7 days |


### Trombone Level

[App page](https://appshunter.io/ios/app/trombone-level/id6748576970)

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

**In-app purchases:** none


## Frequently asked questions

### Is Doctor Shield free?

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

### Is Trombone Level free?

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

### Do Doctor Shield or Trombone Level have ads?

Trombone Level shows ads; Doctor Shield does not.

### Which is updated more often, Doctor Shield or Trombone Level?

Doctor Shield ships an update every 6 days, and Trombone Level every 2 weeks. Most recently, Doctor Shield was updated on October 2, 2026 and Trombone Level on September 29, 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.*