# e Sono Phone Probe vs FirstInSim

The clearest difference is in-app purchases: e Sono Phone Probe at none against FirstInSim's 1. e Sono Phone Probe also leads on iOS requirement (15.6 vs 26.0). FirstInSim's advantage is update cadence (every 6 days vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. FirstInSim sells 1 in-app purchase, starting at $5.99 per year. e Sono Phone Probe asks for nothing beyond the download.

e Sono Phone Probe ships an update every 5 months, FirstInSim every 6 days. The most recent releases landed on October 28, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | e Sono Phone Probe | FirstInSim |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/firstinsim/id6778178207/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 6 days** |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 23 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [3B Scientific](https://appshunter.io/developer/1407867777) | [LifeLine EMS Training and Consulting LLC](https://appshunter.io/developer/1862662486) |

## What reviewers say

### e Sono Phone Probe

[App page](https://appshunter.io/ios/app/e-sono-phone-probe/id6743545381)

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

**In-app purchases:** none


### FirstInSim

[App page](https://appshunter.io/ios/app/firstinsim/id6778178207)

Create realistic fire training simulations using photos of your location. Add elements like smoke, fire, vehicles, and victims to practice scene reports and initial tactics. Save and present your custom scenarios.

**Highlights:** Photo-based scenario creation, Customizable smoke and fire effects, Add vehicles and victims, Save and present simulations, Practice scene reports, Develop initial tactics

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FirstInSim Annual | $5.99 | per year |


## Frequently asked questions

### Is e Sono Phone Probe free?

e Sono Phone Probe is free to download, with no in-app purchases.

### Is FirstInSim free?

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

### Do e Sono Phone Probe or FirstInSim have ads?

Neither e Sono Phone Probe nor FirstInSim shows ads.

### Which is updated more often, e Sono Phone Probe or FirstInSim?

e Sono Phone Probe ships an update every 5 months, and FirstInSim every 6 days. Most recently, e Sono Phone Probe was updated on October 28, 2026 and FirstInSim on October 8, 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.*