# P1 Select vs Sigma Theory

The clearest difference is in-app purchases: P1 Select at none against Sigma Theory's 7. P1 Select also leads on rating (4.9 vs 4.5) and review sentiment (85% vs 58%). On ads, monetization model and device support there is nothing between them.

P1 Select costs $3.99 and Sigma Theory $6.99 up front. Sigma Theory sells 7 one-off in-app purchases. P1 Select asks for nothing beyond the download.

P1 Select holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: P1 Select has 50 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 85% of P1 Select's written reviews are positive against 58% of Sigma Theory's.

P1 Select ships an update every 4 days, Sigma Theory fortnightly. The most recent releases landed on October 18, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | P1 Select | Sigma Theory |
| --- | --- | --- |
| Price | **$3.99** | $6.99 |
| Rating | **[4.9 (50 ratings)](https://appshunter.io/ios/app/p1-select/id1470639614/reviews)** | [4.5 (8 ratings)](https://appshunter.io/ios/app/sigma-theory/id1492483961/reviews) |
| Number of ratings | **50** | 8 |
| Positive reviews | **85.0% of reviews** | 58.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Fortnightly |
| Monetization | Paid | Paid |
| Size | 5 MB | 388 MB |
| Requires iOS | **7.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Michael Brough](https://appshunter.io/developer/490257881) | [Plug In Digital](https://appshunter.io/developer/608306412) |

## What reviewers say

### P1 Select

[App page](https://appshunter.io/ios/app/p1-select/id1470639614)

Embark on a roguelike adventure through randomly generated levels, battling monsters and collecting magical rings to unlock special attacks. Choose from nine unique heroes and aim for a high score by gathering pyramids. Experience a challenging and strategic gameplay experience.

**Highlights:** Mini roguelike gameplay, 9 randomly generated levels, Magical ring power-ups, Special attack abilities, 9 playable hero characters, High score system

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

**In-app purchases:** none


### Sigma Theory

[App page](https://appshunter.io/ios/app/sigma-theory/id1492483961)

Lead a covert agency in a futuristic global cold war. Recruit elite agents, use diplomacy and subterfuge to secure a world-changing scientific discovery for your nation. Engage in turn-based espionage, manage complex relationships, and direct field operations.

**Highlights:** Turn-based espionage gameplay, Recruit and manage special agents, Dynamic narrative with over 100 NPCs, Field operations in global cities, Diplomacy and subterfuge mechanics, Futuristic global cold war setting

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| USA Pack | $0.99 | one-time |
| China | $0.99 | one-time |
| Germany | $0.99 | one-time |
| South Korea | $0.99 | one-time |
| Nigeria | $0.99 | one-time |
| Brazil | $0.99 | one-time |
| Special Offer: All DLCs | $3.99 | one-time |


## Frequently asked questions

### Is P1 Select free?

P1 Select costs $3.99, with no in-app purchases.

### Is Sigma Theory free?

Sigma Theory costs $6.99, and also offers in-app purchases.

### Which has better reviews, P1 Select or Sigma Theory?

P1 Select is rated higher. P1 Select averages 4.9 out of 5 from 50 ratings, while Sigma Theory averages 4.5 from 8 ratings.

### Do P1 Select or Sigma Theory have ads?

Neither P1 Select nor Sigma Theory shows ads.

### Which is updated more often, P1 Select or Sigma Theory?

P1 Select ships an update every 4 days, and Sigma Theory fortnightly. Most recently, P1 Select was updated on October 18, 2026 and Sigma Theory on October 14, 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.*