# e Sono Phone Probe vs ProxSIMity Simulation

The clearest difference is update cadence: ProxSIMity Simulation at monthly against e Sono Phone Probe's every 5 months. 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.

e Sono Phone Probe ships an update every 5 months, ProxSIMity Simulation monthly. The most recent releases landed on September 2, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | e Sono Phone Probe | ProxSIMity Simulation |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Size | 1 MB | 28 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [3B Scientific](https://appshunter.io/developer/1407867777) | [ProxSIMity Inc.](https://appshunter.io/developer/1744491519) |

## 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


### ProxSIMity Simulation

[App page](https://appshunter.io/ios/app/proxsimity-simulation/id6744665738)

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

**In-app purchases:** none


## Frequently asked questions

### Is e Sono Phone Probe free?

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

### Is ProxSIMity Simulation free?

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

### Do e Sono Phone Probe or ProxSIMity Simulation have ads?

Neither e Sono Phone Probe nor ProxSIMity Simulation shows ads.

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

e Sono Phone Probe ships an update every 5 months, and ProxSIMity Simulation monthly. Most recently, e Sono Phone Probe was updated on September 2, 2026 and ProxSIMity Simulation on September 12, 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.*