# OPTIC One GO! vs Shift.IX

The clearest difference is in-app purchases: OPTIC One GO! at none against Shift.IX's 1. OPTIC One GO! also leads on iOS requirement (11.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Shift.IX sells 1 in-app purchase, starting at $9.99 per year. OPTIC One GO! asks for nothing beyond the download.

OPTIC One GO! ships an update every 4 weeks, Shift.IX every 3 weeks. The most recent releases landed on November 9, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | OPTIC One GO! | Shift.IX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 3 weeks** |
| Size | 22 MB | 73 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Feediu](https://appshunter.io/developer/1561934628) | [Murat Cucenoglu](https://appshunter.io/developer/1890174600) |

## What reviewers say

### OPTIC One GO!

[App page](https://appshunter.io/ios/app/optic-one-go/id6754921124)

**Features:** macOS Compatibility

**In-app purchases:** none


### Shift.IX

[App page](https://appshunter.io/ios/app/shiftix/id6761535309)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ShiftIX Premium Annual | $9.99 | per year |


## Frequently asked questions

### Is OPTIC One GO! free?

OPTIC One GO! is free to download, with no in-app purchases.

### Is Shift.IX free?

Shift.IX is free to download, with in-app purchases available.

### Do OPTIC One GO! or Shift.IX have ads?

Neither OPTIC One GO! nor Shift.IX shows ads.

### Which is updated more often, OPTIC One GO! or Shift.IX?

OPTIC One GO! ships an update every 4 weeks, and Shift.IX every 3 weeks. Most recently, OPTIC One GO! was updated on November 9, 2026 and Shift.IX on October 28, 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.*