# Underlairs vs 4get.

The clearest difference is in-app purchases: 4get. at none against Underlairs's 3. Underlairs's advantage is device support (3 vs 1). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Underlairs sells 3 in-app purchases, starting at $0.99 per month. 4get. asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 7, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Underlairs | 4get. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/underlairs-focus-study-timer/id6755931983/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Freemium | **Free** |
| Size | 230 MB | 63 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [John Jang](https://appshunter.io/developer/1857417631) | [연우 정](https://appshunter.io/developer/6787064085) |

## What reviewers say

### Underlairs

[App page](https://appshunter.io/ios/app/underlairs-focus-study-timer/id6755931983)

Enhance concentration and memory with curated ambient soundscapes and a focus timer. Choose from unique 'Lairs' and track your progress to achieve deep work and productivity goals.

**Highlights:** Focus Timer with customizable durations, Beast Mode for continuous music, Ambient soundscape playlists, Background playback, Lock screen controls, Stats tracking for focus minutes and streaks, Minimalist design

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $0.99 | per month |
| Yearly Premium | $9.99 | per year |
| Premium Lifetime Access | $17.99 | one-time |


### 4get.

[App page](https://appshunter.io/ios/app/4get-retro-focus-timer/id6787064083)

Transform your smartphone into a 2003-style green LCD phone for a set duration. Focus on the countdown and signal, and grow a forget-me-not flower in your field for each successful session. Lock distracting apps during your focus time.

**Highlights:** 2003-style LCD phone interface, Focus timer with countdown, Grow virtual forget-me-nots, App locking for distractions, Minimalist design, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Underlairs free?

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

### Is 4get. free?

4get. is free to download, with no in-app purchases.

### Do Underlairs or 4get. have ads?

Neither Underlairs nor 4get. shows ads.

### Which is updated more often, Underlairs or 4get.?

Underlairs ships an update every 3 weeks, and 4get. every 3 weeks. Most recently, Underlairs was updated on September 7, 2026 and 4get. on September 21, 2026.

---

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