# PTSD Keys vs iFlow Zen

PTSD Keys and iFlow Zen are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

PTSD Keys ships an update every 3 weeks, iFlow Zen every 5 weeks. The most recent releases landed on October 14, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | PTSD Keys | iFlow Zen |
| --- | --- | --- |
| 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 5 weeks |
| Monetization | Free | — |
| Size | 63 MB | 40 MB |
| Requires iOS | **12.0** | 13.4 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stress Is Gone, LLC](https://appshunter.io/developer/441715029) | [Starflow GmbH](https://appshunter.io/developer/1720104649) |

## What reviewers say

### 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


### iFlow Zen

[App page](https://appshunter.io/ios/app/iflow-zen/id6736818128)

**In-app purchases:** none


## Frequently asked questions

### Is PTSD Keys free?

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

### Is iFlow Zen free?

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

### Do PTSD Keys or iFlow Zen have ads?

Neither PTSD Keys nor iFlow Zen shows ads.

### Which is updated more often, PTSD Keys or iFlow Zen?

PTSD Keys ships an update every 3 weeks, and iFlow Zen every 5 weeks. Most recently, PTSD Keys was updated on October 14, 2026 and iFlow Zen on October 25, 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.*