# G.Smart 4.0 vs OPA Sat

The clearest difference is update cadence: OPA Sat at fortnightly against G.Smart 4.0's every 20 months. G.Smart 4.0's advantage is iOS requirement (11.0 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.

G.Smart 4.0 ships an update every 20 months, OPA Sat fortnightly. The most recent releases landed on October 8, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | G.Smart 4.0 | OPA Sat |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Fortnightly** |
| Size | 173 MB | 124 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Garen Automacao SA](https://appshunter.io/developer/1439140467) | [Voxter Brasil LTDA](https://appshunter.io/developer/1423674208) |

## What reviewers say

### G.Smart 4.0

[App page](https://appshunter.io/ios/app/gsmart-40/id1626288093)

**Features:** macOS Compatibility

**In-app purchases:** none


### OPA Sat

[App page](https://appshunter.io/ios/app/opa-sat/id6760845320)

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

**In-app purchases:** none


## Frequently asked questions

### Is G.Smart 4.0 free?

G.Smart 4.0 is free to download, with no in-app purchases.

### Is OPA Sat free?

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

### Do G.Smart 4.0 or OPA Sat have ads?

Neither G.Smart 4.0 nor OPA Sat shows ads.

### Which is updated more often, G.Smart 4.0 or OPA Sat?

G.Smart 4.0 ships an update every 20 months, and OPA Sat fortnightly. Most recently, G.Smart 4.0 was updated on October 8, 2026 and OPA Sat on October 13, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*