# UNDERNEXT2 vs NavJack

The clearest difference is ads: NavJack at none against UNDERNEXT2's shown. On price, update cadence, 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.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 14, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | UNDERNEXT2 | NavJack |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Monthly | Monthly |
| Monetization | Ad-supported | — |
| Size | 119 MB | 104 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [MARCH GLOVES INC.](https://appshunter.io/developer/1471273196) | [NavJack Co., Ltd.](https://appshunter.io/developer/1395179812) |

## What reviewers say

### UNDERNEXT2

[App page](https://appshunter.io/ios/app/undernext2/id1179692578)

Browse products with an intuitive interface and receive real-time notifications for shipments and promotions. Offers secure payment options including credit cards and convenience store pickup. Sign up easily with your mobile number.

**Highlights:** Intuitive product browsing, Shipment and pickup notifications, Real-time promotion push notifications, Secure encrypted credit card payments, Convenience store pickup and payment, Mobile number sign-up

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### NavJack

[App page](https://appshunter.io/ios/app/navjack/id1395179813)

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

**In-app purchases:** none


## Frequently asked questions

### Is UNDERNEXT2 free?

UNDERNEXT2 is free to download, with no in-app purchases.

### Is NavJack free?

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

### Do UNDERNEXT2 or NavJack have ads?

UNDERNEXT2 shows ads; NavJack does not.

### Which is updated more often, UNDERNEXT2 or NavJack?

UNDERNEXT2 ships an update monthly, and NavJack monthly. Most recently, UNDERNEXT2 was updated on October 14, 2026 and NavJack on October 6, 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.*