# Underpin vs 1HF

The clearest difference is update cadence: Underpin at every 10 days against 1HF's every 51 months. On price, ads, 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.

Underpin ships an update every 10 days, 1HF every 51 months. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Underpin | 1HF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/underpin/id1438111455/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 51 months |
| Monetization | Free | — |
| Size | 22 MB | 30 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 12+ |
| Developer | [Underpin, Inc.](https://appshunter.io/developer/1292004832) | [One Human Family, LLC](https://appshunter.io/developer/1571472591) |

## What reviewers say

### Underpin

[App page](https://appshunter.io/ios/app/underpin/id1438111455)

Discover and share trusted travel experiences with a global community. Document favorite places, plan adventures, and connect with locals for authentic recommendations. Supports local communities and small businesses.

**Highlights:** Drop pins anywhere globally, Plan travel adventures and meetups, Research on-the-go with map filters, Discover local and off-the-beaten-track places, Connect with a global network of trusted contacts, Curate travel journals and save favorites, Support local communities and small businesses

**In-app purchases:** none


### 1HF

[App page](https://appshunter.io/ios/app/1hf/id1571472589)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Underpin free?

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

### Is 1HF free?

1HF is free to download, with no in-app purchases.

### Do Underpin or 1HF have ads?

Neither Underpin nor 1HF shows ads.

### Which is updated more often, Underpin or 1HF?

Underpin ships an update every 10 days, and 1HF every 51 months. Most recently, Underpin was updated on October 24, 2026 and 1HF on October 10, 2026.

---

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