# Pebbly Nudge vs Postra

The clearest difference is in-app purchases: Pebbly Nudge at none against Postra's 7. Pebbly Nudge also leads on update cadence (every 2 days vs every 2 weeks) and iOS requirement (15.6 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Postra sells 7 in-app purchases, starting at $19.99 per month. Pebbly Nudge asks for nothing beyond the download.

Pebbly Nudge ships an update every 2 days, Postra every 2 weeks. The most recent releases landed on October 2, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Pebbly Nudge | Postra |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Monetization | Free | — |
| Size | 40 MB | 90 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Hock Boon Steven Ong](https://appshunter.io/developer/1778641804) | [Postra AB](https://appshunter.io/developer/1807937957) |

## What reviewers say

### Pebbly Nudge

[App page](https://appshunter.io/ios/app/pebbly-nudge/id6737975802)

This app offers a mental wellness companion inspired by CBT and habit-building techniques. It features an AI chatbot trained on research, journaling, guided breathing, and to-do lists to support self-care and improve mental resilience.

**Highlights:** AI-powered CBT chatbot, Guided journaling, Mindfulness exercises, To-do list integration, Gamified progress tracking, Personalized self-care

**Features:** macOS Compatibility

**In-app purchases:** none


### Postra

[App page](https://appshunter.io/ios/app/postra-for-better-posture/id6744517735)

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full access monthly | $19.99 | per month |
| Full access yearly | $149.99 | per year |
| Utåtvridna fötter | $4.99 | one-time |
| Base Program | $14.99 | one-time |
| Base Program Bundle | $22.99 | one-time |
| Customized Program | $69.99 | one-time |
| Full access lifetime | $79.99 | one-time |


## Frequently asked questions

### Is Pebbly Nudge free?

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

### Is Postra free?

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

### Do Pebbly Nudge or Postra have ads?

Neither Pebbly Nudge nor Postra shows ads.

### Which is updated more often, Pebbly Nudge or Postra?

Pebbly Nudge ships an update every 2 days, and Postra every 2 weeks. Most recently, Pebbly Nudge was updated on October 2, 2026 and Postra on October 13, 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.*