# Second Eye vs Parallax

The clearest difference is ads: Second Eye at none against Parallax's shown. Second Eye also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. Second Eye sells 2 in-app purchases, starting at $3.99 per month and Parallax sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Second Eye ships an update fortnightly, Parallax every 2 weeks. Both last shipped on September 10, 2026.

## The numbers

| Metric | Second Eye | Parallax |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Size | 34 MB | 23 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 9+ | 17+ |
| Developer | [PRAGMATIC TECH INNOVATIONS LTD](https://appshunter.io/developer/1575147856) | [Corinth OÜ](https://appshunter.io/developer/1845088617) |

## What reviewers say

### Second Eye

[App page](https://appshunter.io/ios/app/second-eye/id6760843474)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $3.99 | per month |
| Expand Pack | $1.99 | one-time |


### Parallax

[App page](https://appshunter.io/ios/app/parallax-compare-ai-models/id6761058118)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $4.99 | per 7 days |
| Yearly Premium | $99.99 | per year |


## Frequently asked questions

### Is Second Eye free?

Second Eye is free to download, with in-app purchases available.

### Is Parallax free?

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

### Do Second Eye or Parallax have ads?

Parallax shows ads; Second Eye does not.

### Which is updated more often, Second Eye or Parallax?

Second Eye ships an update fortnightly, and Parallax every 2 weeks. Most recently, Second Eye was updated on September 10, 2026 and Parallax on September 10, 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.*