# Prolog vs Sigefro

The clearest difference is update cadence: Prolog at every 3 days against Sigefro's fortnightly. 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.

Prolog ships an update every 3 days, Sigefro fortnightly. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Prolog | Sigefro |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Fortnightly |
| Monetization | Free | — |
| Size | 119 MB | 30 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zalf Sistemas LTDA](https://appshunter.io/developer/1707085086) | [patrick araujo](https://appshunter.io/developer/1892819907) |

## What reviewers say

### Prolog

[App page](https://appshunter.io/ios/app/prolog/id6470036075)

Optimize fleet operations and tire management with advanced technology. This system enhances productivity, reduces costs, and standardizes processes for businesses.

**Highlights:** Fleet operation optimization, Tire management system, Productivity enhancement, Cost reduction, Process standardization

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

**In-app purchases:** none


### Sigefro

[App page](https://appshunter.io/ios/app/sigefro/id6762081002)

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

**In-app purchases:** none


## Frequently asked questions

### Is Prolog free?

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

### Is Sigefro free?

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

### Do Prolog or Sigefro have ads?

Neither Prolog nor Sigefro shows ads.

### Which is updated more often, Prolog or Sigefro?

Prolog ships an update every 3 days, and Sigefro fortnightly. Most recently, Prolog was updated on November 4, 2026 and Sigefro on October 31, 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.*