# DD vs Sleepy Train

The clearest difference is monetization model: DD at free against Sleepy Train's paid. DD also leads on update cadence (every 3 days vs every 2 weeks) and ratings volume (14 vs 2). Sleepy Train's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.6). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. DD sells 3 one-off in-app purchases and Sleepy Train sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for DD against 5.0 for Sleepy Train. That said, the two scores are not equally well evidenced: DD has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

DD ships an update every 3 days, Sleepy Train every 2 weeks. The most recent releases landed on October 22, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | DD | Sleepy Train |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (14 ratings)](https://appshunter.io/ios/app/dd-420/id6774722277/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/sleepy-train-calm-bedtime/id6790432281/reviews) |
| Number of ratings | **14** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Monetization | **Free** | Paid |
| Size | 20 MB | 615 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Shawn Wright](https://appshunter.io/developer/6774722279) | [Record Creative Co. LLC](https://appshunter.io/developer/1827706030) |

## What reviewers say

### DD

[App page](https://appshunter.io/ios/app/dd-420/id6774722277)

A private wellness companion for veterans managing PTSD and using cannabis. It offers daily symptom tracking, cannabis session logging, and evidence-based coping tools. All data stays on your device, with no accounts or ads.

**Highlights:** Daily PTSD symptom check-ins, Cannabis session logging, Personalized insights and charts, Evidence-based coping tools, Tolerance break tracker, Direct access to Veterans Crisis Line

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee Tip | $2.99 | one-time |
| Lunch Tip | $4.99 | one-time |
| Hero Tip | $9.99 | one-time |


### Sleepy Train

[App page](https://appshunter.io/ios/app/sleepy-train-calm-bedtime/id6790432281)

This app helps children establish a calming bedtime routine through interactive play with a train character. It addresses big feelings and teaches breathing exercises, making bedtime a peaceful experience for both child and parent. The content is fully spoken and designed for independent use by young children.

**Highlights:** Interactive bedtime ritual, Emotional regulation tools, Guided breathing exercises, Fully spoken content, Offline functionality, Ad-free experience

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sleepy Train - Full Unlock | $4.99 | one-time |


## Frequently asked questions

### Is DD free?

DD is free to download, with in-app purchases available.

### Is Sleepy Train free?

Sleepy Train is free to download, with in-app purchases available.

### Which has better reviews, DD or Sleepy Train?

DD and Sleepy Train are both rated 5.0 out of 5 on the App Store, from 14 and 2 ratings respectively.

### Do DD or Sleepy Train have ads?

Neither DD nor Sleepy Train shows ads.

### Which is updated more often, DD or Sleepy Train?

DD ships an update every 3 days, and Sleepy Train every 2 weeks. Most recently, DD was updated on October 22, 2026 and Sleepy Train on October 21, 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.*