# Planet Doctor vs Re

The clearest difference is iOS requirement: Planet Doctor at 14.0 against Re's 16.0. 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.

Planet Doctor ships an update every 4 months, Re every 3 months. The most recent releases landed on October 27, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Planet Doctor | Re |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | — | Freemium |
| Size | 42 MB | 74 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [Planet Doctor Inc.](https://appshunter.io/developer/1687272355) | [Craig Short](https://appshunter.io/developer/1775242433) |

## What reviewers say

### Planet Doctor

[App page](https://appshunter.io/ios/app/planet-doctor/id6448985336)

**Features:** macOS Compatibility

**In-app purchases:** none


### Re

[App page](https://appshunter.io/ios/app/recalibrate/id6737204151)

This app offers a data-driven approach to managing stress and anxiety, utilizing haptic feedback and AI analysis to provide personalized interventions. It focuses on efficacy and speed, stripping away gamification for a more direct tool to regulate your nervous system.

**Highlights:** Haptic-first grounding exercises, Context-aware AI stress analyst, Correlative habit insights, Live efficacy data visualization, One-tap access to relief

**Features:** Family Sharing

**In-app purchases:** none


## Frequently asked questions

### Is Planet Doctor free?

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

### Is Re free?

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

### Do Planet Doctor or Re have ads?

Neither Planet Doctor nor Re shows ads.

### Which is updated more often, Planet Doctor or Re?

Planet Doctor ships an update every 4 months, and Re every 3 months. Most recently, Planet Doctor was updated on October 27, 2026 and Re on November 9, 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.*