# FSSD vs OptSee

The clearest difference is update cadence: OptSee at every 3 months against FSSD's every 6 months. FSSD's advantage is iOS requirement (11.0 vs 13.0). 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.

FSSD ships an update every 6 months, OptSee every 3 months. The most recent releases landed on September 11, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | FSSD | OptSee |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 months** |
| Size | 53 MB | 57 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Invincible Four Season Technology Co., Ltd.](https://appshunter.io/developer/1686851585) | [Shenzhen Optech Technology Co., Ltd.](https://appshunter.io/developer/1863628345) |

## What reviewers say

### FSSD

[App page](https://appshunter.io/ios/app/fssd/id6450849738)

**Features:** macOS Compatibility

**In-app purchases:** none


### OptSee

[App page](https://appshunter.io/ios/app/optsee/id6756913778)

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

**In-app purchases:** none


## Frequently asked questions

### Is FSSD free?

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

### Is OptSee free?

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

### Do FSSD or OptSee have ads?

Neither FSSD nor OptSee shows ads.

### Which is updated more often, FSSD or OptSee?

FSSD ships an update every 6 months, and OptSee every 3 months. Most recently, FSSD was updated on September 11, 2026 and OptSee on September 18, 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.*