# Underlay vs PassSnap

The clearest difference is update cadence: PassSnap at weekly against Underlay's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Underlay sells 2 in-app purchases, starting at $1.99 per 7 days and PassSnap sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Underlay ships an update every 3 weeks, PassSnap weekly. The most recent releases landed on October 13, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Underlay | PassSnap |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/passsnap/id6768440260/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 12 MB | 3 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Vyacheslav Volynchits](https://appshunter.io/developer/1760377754) | [Cnnex Limited Company](https://appshunter.io/developer/1775483021) |

## What reviewers say

### Underlay

[App page](https://appshunter.io/ios/app/underlay/id6760458231)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Underlay Weekly Membership | $1.99 | per 7 days |
| Underlay Month Membership | $5.99 | per month |


### PassSnap

[App page](https://appshunter.io/ios/app/passsnap/id6768440260)

Easily create official passport, visa, and ID photos from your iPhone. Get digital uploads, single photos, print layouts, and instructions. Supports multiple countries and document types with optional AI enhancements.

**Highlights:** Guided photo capture, Official digital upload JPEGs, Single-photo exports, 4x6 inch print layouts, Print instructions PDF, AI white-background, AI beautification

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI_VERIFICATION | $1.99 | one-time |
| AI beauty add-on | $1.99 | one-time |
| AI white background add-on | $1.99 | one-time |
| UNLOCK PACKAGE | $4.99 | one-time |


## Frequently asked questions

### Is Underlay free?

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

### Is PassSnap free?

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

### Do Underlay or PassSnap have ads?

Neither Underlay nor PassSnap shows ads.

### Which is updated more often, Underlay or PassSnap?

Underlay ships an update every 3 weeks, and PassSnap weekly. Most recently, Underlay was updated on October 13, 2026 and PassSnap on September 26, 2026.

---

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