Comparison

SDB Coaching vs Stiff

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SDB Coaching

Features
Read full description

Achieve Your Fitness Goals with SDB Coaching! Transform your body and mind with personalized fitness coaching tailored just for you. The SDB Coaching app is your all-in-one platform to track progress, stay motivated, and reach your fitness potential. Whether you’re a beginner or looking to break through plateaus, SDB Coaching provides the tools and support to help you succeed. Download the SDB Coaching app now and take control of your fitness goals! * App access requires paid coaching plan Terms of use: https://kahunas.io/terms-conditions Privacy policy: https://kahunas.io/privacy

About

Stiff

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
Read full description

Your body was not designed for eight hours in a chair. Stiff helps you survive it anyway. Stiff is a desk stretch reminder that nudges you during your actual working hours - never at 11pm - and walks you through a fix for whatever is aching. Neck, shoulders, lower back, wrists, hips, eyes. Under two minutes. No equipment, no gym, no getting changed. And Stiff, the sloth who lives in the app, will judge you the whole time. Gently. At first. WHY IT ACTUALLY STICKS Most stretch apps are a list of exercises you open once and never again. Stiff is a habit. Reminders arrive on your schedule, sessions are short enough that you have no excuse, and every stretch you finish earns XP, feeds your streak, and slowly turns Stiff from openly disappointed into something close to proud. BUILT AROUND YOUR WORKDAY • Set your work days and hours - reminders only fire when you're at your desk • Choose your rhythm: every 30, 45, 60, 90 or 120 minutes • Choose your session: one quick reset, a balanced pair, or a three-stretch flow • Tell Stiff what hurts and your sessions lean toward that area • Like and dislike stretches to shape what you get 41 DESK-FRIENDLY STRETCHES Everything is done sitting at your desk or standing next to it, with a guided timer, plain instructions and optional sound cues. Targeted sets for neck and shoulders, lower back, wrists and hands, hips and posture - plus eye-strain breaks for screen fatigue. PROGRESS THAT MOTIVATES • XP and levels - your first stretch of the day is worth the most, so showing up beats grinding • Daily streaks you won't want to break • 14 badges, from First Stretch to Ascended • Weekly goals and a full history of every session • Optional Apple Health sync STRETCH WITH YOUR TEAM Make a group for your office, your remote team or your friends, and let the leaderboard settle who actually gets out of their chair. STIFF PRO • All 41 stretches, including 15 Pro-only ones • Time-of-day aware sessions - different stretches for morning, afternoon and evening • A monthly streak freeze for the days life wins • The global leaderboard and your worldwide rank • Classic Sarcastic mode: keep the original grumpy Stiff forever FREE FOREVER 26 stretches, unlimited reminders, XP, levels, streaks, badges and groups. No ads. Ever. Stiff is a movement reminder, not medical advice. If something hurts in a way stretching shouldn't fix, please see a professional. Privacy Policy: https://www.getstiff.app/privacy Terms of Use: https://www.getstiff.app/terms Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

SDB Coaching3 screens
Stiff4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 5 level
SDB Coaching versus Stiff: the parameters behind the verdict, then further details
ParameterSDB CoachingStiff
PriceFreeFree
Rating—4.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size50 MB87 MB
Age rating17+4+
DeveloperSabrina de BruijnArmands Klavins

In-app purchases

None

SDB Coaching

No in-app purchases

3 purchases

Stiff

Subscriptions2
  • Unlimited access3 Days trial$4.991 Month
  • Unlimited access3 Days trial$29.991 Year
One-time1
  • Stiff Pro Lifetime$59.99

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.

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