Unstiff: Arthritis & AS
For Ankylosing Spondylitis
About
This app supports individuals with inflammatory arthritis and Ankylosing Spondylitis by building healthier daily routines. It offers personalized tasks, dietary guidance, and insights into how lifestyle factors like sleep and stress affect symptoms.
What's New in Unstiff
2.3
June 29, 2026
What's new in this update: • Shopping list: a ready-made shopping list built from your weekly meal plan. Every ingredient for the week, grouped by aisle, so you can simply check things off as you shop, for the whole week or day by day. • Inflammation Management Score: a single score from 0 to 100 shows how well your inflammation is managed, right on your home screen, along with your target, an estimated timeline, and milestones to reach. • Daily stiffness check-in: log how long your morning stiffness lasts and how much it affects your day, so your score always reflects how you really feel. • Redesigned onboarding that adapts to your condition, so your plan feels personal from the very first day. • A cleaner home screen, refreshed design, and many fixes for a smoother, faster experience.
MoreSubscription plans
Unstiff Premium (Yearly)
Yearly plan to unlock AI insights & symptom reports
Developer apps
FAQ
What is Unstiff?
Unstiff is a daily wellness companion designed to help individuals with Ankylosing Spondylitis and inflammatory arthritis build healthier routines. It provides personalized tasks, dietary guidance, and insights into symptom management.
What conditions does Unstiff support?
Unstiff is designed for people living with Ankylosing Spondylitis (AS), Rheumatoid Arthritis (RA), other forms of inflammatory arthritis, and chronic joint stiffness.
Does Unstiff replace medical treatment?
No, Unstiff is not a medical app and does not provide diagnosis or treatment. It is intended for educational and self-tracking purposes to help users build healthier daily habits and understand their body better. Always consult your doctor for medical concerns.
What are the subscription options for Unstiff Premium?
Unstiff Premium offers monthly ($12.99), quarterly ($19.99), and annual ($59.99) subscription plans. The annual plan includes a 3-day free trial.
What kind of insights does Unstiff provide?
Unstiff helps users understand how nutrition affects inflammation, sleep impacts stiffness and pain, stress influences flare-ups, and daily habits shape long-term health. It offers sleep, stress, and activity insights.
What devices is Unstiff available on?
Unstiff is available for iPhone and iPad devices.
How often is Unstiff updated?
The latest version of Unstiff is 2.3, and it was last updated on June 29, 2026. This indicates a relatively active development cycle.
What is the age rating for Unstiff?
Unstiff has an age rating of 4+, making it suitable for a wide range of users.
