# OnePile vs DR+Kudos Lab

The clearest difference is update cadence: DR+Kudos Lab at every 3 weeks against OnePile's every 2 months. OnePile's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

OnePile ships an update every 2 months, DR+Kudos Lab every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | OnePile | DR+Kudos Lab |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 12.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 170 MB | 140 MB |
| Requires iOS | **15.5** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 9+ | 17+ |
| Developer | [Onepile Tech Limited](https://appshunter.io/developer/1698291545) | [Dr. Kudos Lab](https://appshunter.io/developer/1863918365) |

## What reviewers say

### OnePile

[App page](https://appshunter.io/ios/app/onepile/id6451439146)

Discover nearby book-swapping locations on a map and reserve books online. Collect or donate books at designated machines to earn environmental points and contribute to a low-carbon lifestyle.

**Highlights:** Map view of book swap points, Online book reservation, Book donation and collection, Environmental footprint tracking, Low-carbon lifestyle support

**Features:** macOS Compatibility

**In-app purchases:** none


### DR+Kudos Lab

[App page](https://appshunter.io/ios/app/dr-plus-kudos-lab/id6756965299)

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

**In-app purchases:** none


## Frequently asked questions

### Is OnePile free?

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

### Is DR+Kudos Lab free?

DR+Kudos Lab is free to download, with no in-app purchases.

### Do OnePile or DR+Kudos Lab have ads?

Neither OnePile nor DR+Kudos Lab shows ads.

### Which is updated more often, OnePile or DR+Kudos Lab?

OnePile ships an update every 2 months, and DR+Kudos Lab every 3 weeks. Most recently, OnePile was updated on October 24, 2026 and DR+Kudos Lab on October 24, 2026.

---

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