# SDB Coaching vs Stiff

The clearest difference is in-app purchases: SDB Coaching at none against Stiff's 3. SDB Coaching also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). Stiff's advantage is update cadence (every 2 weeks vs every 2 months). On price and ads there is nothing between them.

Both are free to download. Stiff sells 3 in-app purchases, starting at $4.99 per month. SDB Coaching asks for nothing beyond the download.

SDB Coaching ships an update every 2 months, Stiff every 2 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | SDB Coaching | Stiff |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/stiff-desk-stretch-and-posture/id6786705517/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | — | Freemium |
| Size | 50 MB | 87 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Sabrina de Bruijn](https://appshunter.io/developer/1713000581) | [Armands Klavins](https://appshunter.io/developer/1890739993) |

## What reviewers say

### SDB Coaching

[App page](https://appshunter.io/ios/app/sdb-coaching/id6470121501)

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

**In-app purchases:** none


### Stiff

[App page](https://appshunter.io/ios/app/stiff-desk-stretch-and-posture/id6786705517)

This app provides timed reminders for desk stretches and posture exercises to combat the negative effects of prolonged sitting. It offers guided sessions, progress tracking, and gamified elements to build a consistent habit. Users can customize reminders and focus on specific pain points.

**Highlights:** Desk stretch reminders during work hours, Guided short stretching sessions, Gamified progress tracking (XP, levels, streaks), Targeted stretches for neck, back, wrists, eyes, Team and group leaderboards, Customizable reminder frequency and session length

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited access | $4.99 | per month |
| Unlimited access | $29.99 | per year |
| Stiff Pro Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is SDB Coaching free?

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

### Is Stiff free?

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

### Do SDB Coaching or Stiff have ads?

Neither SDB Coaching nor Stiff shows ads.

### Which is updated more often, SDB Coaching or Stiff?

SDB Coaching ships an update every 2 months, and Stiff every 2 weeks. Most recently, SDB Coaching was updated on November 3, 2026 and Stiff on November 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*