# Earned Value Management vs EMS Protocol Reference

The clearest difference is iOS requirement: EMS Protocol Reference at 18.0 against Earned Value Management's 26.0. 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.

## The numbers

| Metric | Earned Value Management | EMS Protocol Reference |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/earned-value-management/id1060154603/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | — |
| Monetization | Free | — |
| Size | 45 MB | 15 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Russell Shannon](https://appshunter.io/developer/505317310) | [RespondersAI LLC](https://appshunter.io/developer/1818178681) |

## What reviewers say

### Earned Value Management

[App page](https://appshunter.io/ios/app/earned-value-management/id1060154603)

A pocket reference for Department of Defense professionals on Earned Value Management. It offers clear guidelines, an alphabetical list of EVM equations with variable definitions, and built-in calculators to simplify complex math.

**Highlights:** DoD EVM guidelines, Alphabetical EVM equations, Variable definitions, EVM equation calculators, DoD EVM community links

**Features:** Vision Pro support

**In-app purchases:** none


### EMS Protocol Reference

[App page](https://appshunter.io/ios/app/ems-protocol-reference/id6761344731)

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

**In-app purchases:** none


## Frequently asked questions

### Is Earned Value Management free?

Earned Value Management is free to download, with no in-app purchases.

### Is EMS Protocol Reference free?

EMS Protocol Reference is free to download, with no in-app purchases.

### Do Earned Value Management or EMS Protocol Reference have ads?

Neither Earned Value Management nor EMS Protocol Reference shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*