# POPProbe vs Mars Agent

The clearest difference is update cadence: Mars Agent at weekly against POPProbe's every 2 months. POPProbe's advantage is iOS requirement (12.0 vs 15.0). 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.

POPProbe ships an update every 2 months, Mars Agent weekly. The most recent releases landed on September 8, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | POPProbe | Mars Agent |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Size | 47 MB | 21 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [POPProbe](https://appshunter.io/developer/1490832133) | [Axonator Inc](https://appshunter.io/developer/1014024874) |

## What reviewers say

### POPProbe

[App page](https://appshunter.io/ios/app/popprobe/id1617582763)

**Features:** macOS Compatibility

**In-app purchases:** none


### Mars Agent

[App page](https://appshunter.io/ios/app/mars-agent/id6759059316)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is POPProbe free?

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

### Is Mars Agent free?

Mars Agent is free to download, with no in-app purchases.

### Do POPProbe or Mars Agent have ads?

Neither POPProbe nor Mars Agent shows ads.

### Which is updated more often, POPProbe or Mars Agent?

POPProbe ships an update every 2 months, and Mars Agent weekly. Most recently, POPProbe was updated on September 8, 2026 and Mars Agent on September 13, 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.*