# Pressure vs sigmaABC

Pressure and sigmaABC are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Pressure ships an update every 4 weeks, sigmaABC fortnightly. The most recent releases landed on September 15, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | Pressure | sigmaABC |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Fortnightly** |
| Size | 51 MB | 76 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [V. S. Ribeiro Eireli](https://appshunter.io/developer/1416703190) | [Fundação ABC](https://appshunter.io/developer/1253447077) |

## What reviewers say

### Pressure

[App page](https://appshunter.io/ios/app/pressure/id1661174240)

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

**In-app purchases:** none


### sigmaABC

[App page](https://appshunter.io/ios/app/sigmaabc/id6748761818)

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

**In-app purchases:** none


## Frequently asked questions

### Is Pressure free?

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

### Is sigmaABC free?

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

### Do Pressure or sigmaABC have ads?

Neither Pressure nor sigmaABC shows ads.

### Which is updated more often, Pressure or sigmaABC?

Pressure ships an update every 4 weeks, and sigmaABC fortnightly. Most recently, Pressure was updated on September 15, 2026 and sigmaABC on September 5, 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.*