# P1 ChatOps vs GSA Per Diem

The clearest difference is rating: GSA Per Diem at 5.0 against P1 ChatOps's 2.0. GSA Per Diem also leads on update cadence (monthly vs every 4 months). P1 ChatOps's advantage is ads (none vs shown) and ratings volume (23 vs 2). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

GSA Per Diem holds the better App Store score, 5.0 against 2.0. That said, the two scores are not equally well evidenced: P1 ChatOps has 23 ratings behind it against 2, so its average is the more settled of the two.

P1 ChatOps ships an update every 4 months, GSA Per Diem monthly. Both last shipped on October 24, 2026.

## The numbers

| Metric | P1 ChatOps | GSA Per Diem |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (23 ratings)](https://appshunter.io/ios/app/p1-chatops/id6673912475/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/gsa-per-diem/id6779188397/reviews)** |
| Number of ratings | **23** | 2 |
| Positive reviews | 8.3% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Free | — |
| Size | 90 MB | 48 MB |
| Requires iOS | 15.1 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [USAF-BESPIN](https://appshunter.io/developer/1517865978) | [Kiarash Torkian](https://appshunter.io/developer/6771679909) |

## What reviewers say

### P1 ChatOps

[App page](https://appshunter.io/ios/app/p1-chatops/id6673912475)

This secure chat application facilitates mission execution for government customers. It requires an invitation to connect to specific servers and adherence to cybersecurity policies.

**Highlights:** Secure chat, Collaboration capabilities, Mission execution support, Platform One integration, Mattermost powered

**Features:** macOS Compatibility

**In-app purchases:** none


### GSA Per Diem

[App page](https://appshunter.io/ios/app/gsa-per-diem/id6779188397)

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

**In-app purchases:** none


## Frequently asked questions

### Is P1 ChatOps free?

P1 ChatOps is free to download, with no in-app purchases.

### Is GSA Per Diem free?

GSA Per Diem is free to download, with no in-app purchases.

### Which has better reviews, P1 ChatOps or GSA Per Diem?

GSA Per Diem is rated higher. P1 ChatOps averages 2.0 out of 5 from 23 ratings, while GSA Per Diem averages 5.0 from 2 ratings.

### Do P1 ChatOps or GSA Per Diem have ads?

GSA Per Diem shows ads; P1 ChatOps does not.

### Which is updated more often, P1 ChatOps or GSA Per Diem?

P1 ChatOps ships an update every 4 months, and GSA Per Diem monthly. Most recently, P1 ChatOps was updated on October 24, 2026 and GSA Per Diem on October 24, 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.*