# The Centered Stone vs PTSD Keys

The clearest difference is iOS requirement: PTSD Keys at 12.0 against The Centered Stone'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.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 12, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | The Centered Stone | PTSD Keys |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ptsd-keys/id1485058531/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | — | Free |
| Size | 191 MB | 63 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The Centered Stone](https://appshunter.io/developer/1601863986) | [Stress Is Gone, LLC](https://appshunter.io/developer/441715029) |

## What reviewers say

### The Centered Stone

[App page](https://appshunter.io/ios/app/the-centered-stone/id1235148694)

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

**In-app purchases:** none


### PTSD Keys

[App page](https://appshunter.io/ios/app/ptsd-keys/id1485058531)

This app offers a three-tier solution for managing PTSD symptoms, providing instant relief, predictive reminders, and tools to process traumatic memories. It utilizes brainwave entrainment to promote relaxation and includes a complimentary membership for ongoing support and coaching.

**Highlights:** One-touch instant relief, Predictive stress reaction reminders, Meditation practice management, Traumatic memory processing tool, Brainwave entrainment for relaxation, Complimentary Stress Is Gone Membership

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is The Centered Stone free?

The Centered Stone is free to download, with no in-app purchases.

### Is PTSD Keys free?

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

### Do The Centered Stone or PTSD Keys have ads?

Neither The Centered Stone nor PTSD Keys shows ads.

### Which is updated more often, The Centered Stone or PTSD Keys?

The Centered Stone ships an update every 3 weeks, and PTSD Keys every 3 weeks. Most recently, The Centered Stone was updated on October 12, 2026 and PTSD Keys on October 14, 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.*