Pure Plank vs CastleFit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pure Plank
This app offers customizable planking routines for a full-core workout in as little as 3 minutes daily. It helps users set and achieve fitness goals, improve both mental and physical health, and makes core training engaging and fun.
- Customizable planking routines
- Goal setting and tracking
- Core strength improvement
- Mental and physical health benefits
- Engaging and fun workouts
- Suitable for all fitness levels
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"Sick of crunches and situps? So were World Champion wrestlers Jay Reso & Adam Copeland when they came up with the PurePlank board and app. The two pros put their heads together to think of the best way to keep fit while living their best life out of the ring. Planking provides a total core workout in as little as 3 minutes per day, preparing you for peak athleticism, boosting mood, and building muscle seamlessly. Crunches, situps, and traditional core exercise only work out abdominal muscles. While there is nothing wrong with these workouts, they aren’t the most exciting or efficient core routines you can mix into your daily routine. When it comes to a full-core training routine, nothing beats planks. PurePlank helps anyone write their core comeback story using the power of planking. Customize Your Planking Routine PurePlank is made for everyone. Started by two men in their 40s, PurePlank was their vision for an adaptable workout routine made to work for a wide range of users – from someone who has never worked out before to someone who has made working out an integral part of their lives. The PurePlank app features customizable plank exercise routines that meet you in your workout journey. Work Up To New Goals Goals propel us in our fitness journeys when we tire of the same exercises. The PurePlank interactive app helps you meet new goals as your body and mind grow stronger. Professional plankers help you set goals and work through them, while the PurePlank board allows you to work up your time, endurance, and more. Improve Mental & Physical Health A good core training routine is key to a healthy lifestyle. Core body muscles provide body stability, improve balance, and propel health goals. Planking provides all the benefits of traditional core training exercises (like crunches and situps) with the added benefit of a mental health boost. Get your endorphins flowing and your muscles pumped with the help of PurePlank. Never Get Bored It’s easy to get bored with traditional workouts. You stagnate and grow tired of doing the same movements repeatedly without a change in routine. The PurePlank companion app utilizes professionals to make your workout exciting, personal, and, most importantly – fun. Engage your core strength in just 3 minutes per day, and never get bored doing it. The PurePlank app utilizes bodyweight, proper planking technique, engaging workout routines, and the PurePlank board to allow anyone to feel their best and train their core from home."
CastleFit
This app offers guided stretching and mobility sessions to relieve pain, improve flexibility, and aid recovery. It provides routines for various needs, from injury recovery to pre-training warm-ups, all accessible at home.
- Guided stretch and mobility sessions
- Targeted relief for specific body parts
- HD instructional videos
- Sessions organized by age, ability, and goals
- Active and passive stretching routines
- Device lineup browsing and purchasing
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Relieve pain. Improve flexibility. Recover faster. Castle Fit brings the full CastleFlexx experience to your phone — guided stretch and mobility sessions built around the device that helps treat the root causes of lower back pain, plantar fasciitis, tight calves, hamstring tightness, and limited mobility. Whether you are recovering from an injury, loosening up before training, or building a daily movement habit, Castle Fit gives you a clear, follow-along routine you can do at home. WHAT YOU GET ◆ Dozens of instructional HD videos and relaxing flows ◆ Sessions organized by your age, ability, and goals ◆ Guided programs from leading trainers and therapists ◆ Active and passive stretching routines for full-body mobility ◆ Targeted relief for calves, hamstrings, hips, lower back, and feet SHOP THE FULL RANGE ▸ Browse the complete CastleFlexx device lineup and accessories ▸ Save your favorites to a wishlist ▸ Fast, secure checkout ▸ Track your orders from purchase to delivery ▸ Get updates on new arrivals and restocks TRUSTED BY EXPERTS AND ATHLETES CastleFlexx is recommended by clinicians and chiropractors and used by professional athletes as part of their recovery. The device pairs stretching with core strengthening for a balanced, controlled experience. BUILT FOR YOUR ROUTINE Follow along at your own pace, choose sessions that match how your body feels today, and come back to the flows that work best for you. Everything is designed to keep you moving, mobile, and pain-free. Download Castle Fit and start moving better today.
Screenshots
Verdict
The clearest difference is rating: CastleFit at 4.0 against Pure Plank's 2.0. Pure Plank's advantage is ratings volume (46 vs 2). On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
CastleFit holds the better App Store score, 4.0 against 2.0. That said, the two scores are not equally well evidenced: Pure Plank has 46 ratings behind it against 2, so its average is the more settled of the two.
Pure Plank ships an update monthly, CastleFit every 2 weeks. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.
| Parameter | Pure Plank | CastleFit |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (46 ratings) | 4.0 (2 ratings) — better |
| Positive reviews | 15.4% of reviews | — |
| Number of ratings | 46 — better | 2 |
| Update frequency | Monthly | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 42 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Pure Plank LLC | Castle Flexx |
Customer experience
Pure Plank
CastleFit
In-app purchases
Pure Plank
No in-app purchases
CastleFit
No in-app purchases
Questions
Is Pure Plank free?
Is CastleFit free?
Which has better reviews, Pure Plank or CastleFit?
Do Pure Plank or CastleFit have ads?
Which is updated more often, Pure Plank or CastleFit?
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