# E.U.A vs EF

The clearest difference is update cadence: EF at every 3 days against E.U.A's every 11 days. E.U.A's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. E.U.A sells 2 one-off in-app purchases and EF sells 8 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

E.U.A ships an update every 11 days, EF every 3 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | E.U.A | EF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 days | **Every 3 days** |
| Size | 111 MB | 199 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [SIRIUS SM](https://appshunter.io/developer/1809745753) | [Kenneth Guber, M.D. LLC](https://appshunter.io/developer/1860110576) |

## What reviewers say

### E.U.A

[App page](https://appshunter.io/ios/app/eua/id6754610503)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flutter Course | $999.99 | one-time |
| Course | $999.99 | one-time |


### EF

[App page](https://appshunter.io/ios/app/ef-ortless-echo-trainer/id6758357075)

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Echo+ Monthly | $1.99 | per month |
| Echo Pro Monthly | $2.99 | per month |
| Intern's Stash | $0.99 | one-time |
| Exam Cram Pass | $0.99 | one-time |
| Ischemia Detector | $0.99 | one-time |
| Right Heart Warrior | $0.99 | one-time |
| Fellow's Wallet | $2.99 | one-time |
| Attending's Vault | $9.99 | one-time |


## Frequently asked questions

### Is E.U.A free?

E.U.A is free to download, with in-app purchases available.

### Is EF free?

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

### Do E.U.A or EF have ads?

Neither E.U.A nor EF shows ads.

### Which is updated more often, E.U.A or EF?

E.U.A ships an update every 11 days, and EF every 3 days. Most recently, E.U.A was updated on October 28, 2026 and EF on October 31, 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.*