# Undercurrent vs NailPause

The clearest difference is device support: Undercurrent at 3 against NailPause's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Undercurrent sells 1 one-off in-app purchase and NailPause sells 3 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Undercurrent | NailPause |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Size | 73 MB | 16 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Lloyd Rowat](https://appshunter.io/developer/1166734628) | [NIYAZI ONER](https://appshunter.io/developer/6785392944) |

## What reviewers say

### Undercurrent

[App page](https://appshunter.io/ios/app/undercurrent-symptom-log/id6759209174)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Undercurrent Health: Pro | $19.99 | one-time |


### NailPause

[App page](https://appshunter.io/ios/app/nailpause-stop-nail-biting/id6795972847)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NailPause Pro Monthly | $7.99 | per month |
| NailPause Pro Annual | $29.99 | per year |
| NailPause Pro Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Undercurrent free?

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

### Is NailPause free?

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

### Do Undercurrent or NailPause have ads?

Neither Undercurrent nor NailPause shows ads.

### Which is updated more often, Undercurrent or NailPause?

Undercurrent ships an update weekly, and NailPause weekly. Most recently, Undercurrent was updated on October 24, 2026 and NailPause on October 19, 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.*