# Serendipity Labs vs RE

The clearest difference is iOS requirement: Serendipity Labs at 13.4 against RE's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Serendipity Labs ships an update every 7 months, RE every 4 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | Serendipity Labs | RE |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 4 months** |
| Size | 29 MB | 28 MB |
| Requires iOS | **13.4** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Serendipity Labs, Inc.](https://appshunter.io/developer/1552871569) | [FLEX BY MAPP LLP TRADING AS RE-DEFINED LLP](https://appshunter.io/developer/1797405414) |

## What reviewers say

### Serendipity Labs

[App page](https://appshunter.io/ios/app/serendipity-labs-uk/id6444340839)

**Features:** macOS Compatibility

**In-app purchases:** none


### RE

[App page](https://appshunter.io/ios/app/re-defined/id6742204588)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Serendipity Labs free?

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

### Is RE free?

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

### Do Serendipity Labs or RE have ads?

Neither Serendipity Labs nor RE shows ads.

### Which is updated more often, Serendipity Labs or RE?

Serendipity Labs ships an update every 7 months, and RE every 4 months. Most recently, Serendipity Labs was updated on October 25, 2026 and RE on October 25, 2026.

---

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