Comparison

Inner Armor vs Golf PDI

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

Head to head
About

Inner Armor

Enhance athletic resilience and reach peak performance with advanced training techniques. This app integrates with a sensor to track key physiological metrics like heart rate and body temperature. It is designed for training purposes and not for medical use.

Highlights
  • Performance training techniques
  • Resilience enhancement
  • Heart rate detection
  • Body temperature monitoring
  • Skin conductance tracking
  • Respiration monitoring
Features
Read full description

Inner Armor performance training app trains athletes to reach peak performance by allowing them to use a series of different techniques to enhance their resilience. The app integrates with TPS eVU sensor which enables detection of heart rate, body temperature, skin conductance and respiration. Disclaimer: this app and its affiliated device is NOT for medical use. Users should seek a doctor’s advice in addition to using this app and before making any medical decisions.

About

Golf PDI

This app provides a comprehensive system for golfers to measure and improve their skills. It offers a detailed assessment of golf, physical, mental, and scoring abilities to create a personalized development roadmap. Track your progress and identify areas for growth to achieve peak performance.

Highlights
  • 45-minute skill assessment
  • Personalized practice plans
  • Lead factor data insights
  • Track progress over time
  • Find PDI Certified Coaches
  • Holistic skill evaluation
Features
Read full description

PDI, the Player Development Index, is your personal roadmap to lower scores. PDI is NOT just another ranking or stats program. It's a comprehensive measurement system that empowers golfers to take control of their development, quantify golf improvement beyond scoring average, and achieve peak performance. The DNA of PDI is a 45-minute assessment of your golf skills, physical skills, mental skills, and scoring skills for a complete picture. This assessment should be repeated regularly to measure progress. Whether you have a Coach guiding your assessment, or you are leveraging the Self-guided method, the PDI app provides access to a results report. The report is chock full of insights on the leading indicators of what’s enabling your golf game strengths, and the root causes of your weaknesses. This is a snapshot of where the golfer is at this moment. From there, if you have a Coach, you and your Coach can align on what physical, golf skills, and mental game work to prioritize. If you are self-guided, you can leverage PDI’s recommended practice plan, which is based on years of PDI assessment and coaching experience. And when you are ready for a Coach, the app can help you find a PDI Certified Coach to further accelerate your improvement. Mapping and tracking improvement starts with establishing your baseline today. Download now and get started today. Key Features: Lead Factor Data: Gain critical insights into your strengths and weaknesses, guiding your training towards maximum improvement. Accelerated Development: Get a data-driven roadmap to focus your time, energy, and resources for optimal results. Uncover Hidden Potential: Identify areas where you can excel and understand why you may not be reaching your full potential. Close the Gap: Bridge the disconnect between perceived skill level and actual ability. Track Progress Over Time: Witness your improvement journey unfold and make data-informed decisions about your training. Personalized Feedback: Receive tailored coaching advice based on your unique profile. The PDI Difference: Holistic Approach: Evaluates golf skills, physical skills, mental skills, and scoring skills for a complete picture. Discovery-Based Learning: Promotes long-term athletic development and sustainable growth. Great for working with junior golfers. 5 Elements of Success Philosophy: Built on the foundation of Desire, Coaching, Mental Skills, Physical Performance, and Equipment. Personalized, Data-Driven Insights: The truth is in the numbers. Coach and student can align on what’s most important to work on, including root cause analysis of physical capabilities, mental grit, performance preparation, practice discipline, attitude, and other important contributing factors. Unlock your true potential with PDI. Download now and start your journey to peak performance! NOTE TO COACHES: If you are looking for information about PDI Certification, access to the app for you or your students, or technical questions, visit the golfpdi website. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://golfpdi.com/pdi-privacy-policy/

Screenshots

Inner Armor4 screens
Golf PDI4 screens

Verdict

The call

The clearest difference is rating: Inner Armor at 5.0 against Golf PDI's 4.0. Inner Armor also leads on in-app purchases (none vs 2) and ratings volume (43 vs 4). On price, update cadence, ads and device support 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. Golf PDI sells 2 in-app purchases, starting at $4.99 per month. Inner Armor asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Inner Armor holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Inner Armor has 43 ratings behind it against 4, so its average is the more settled of the two.

UpkeepUpdate frequency

Inner Armor ships an update every 2 weeks, Golf PDI fortnightly. Both last shipped on October 24, 2026.

Scorecard4 real differences · 6 level
Inner Armor versus Golf PDI: the parameters behind the verdict, then further details
ParameterInner ArmorGolf PDI
PriceFreeFree
Rating5.0 (43 ratings) — better4.0 (4 ratings)
Positive reviews100.0% of reviews—
Number of ratings43 — better4
Update frequencyEvery 2 weeksFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.114.0 — better
Further details — not scored
Size304 MB70 MB
Age rating17+4+
DeveloperInner ArmorPlayer Development Solutions, LLC

Customer experience

Inner Armor

All ratings40 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Golf PDI

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%

In-app purchases

None

Inner Armor

No in-app purchases

2 purchases

Golf PDI

Subscriptions2
  • Monthly Premium$4.991 Month
  • Annual Premium$50.001 Year

Questions

Is Inner Armor free?
Inner Armor is free to download, with no in-app purchases.
Is Golf PDI free?
Golf PDI is free to download, with in-app purchases available.
Which has better reviews, Inner Armor or Golf PDI?
Inner Armor is rated higher. Inner Armor averages 5.0 out of 5 from 43 ratings, while Golf PDI averages 4.0 from 4 ratings.
Do Inner Armor or Golf PDI have ads?
Neither Inner Armor nor Golf PDI shows ads.
Which is updated more often, Inner Armor or Golf PDI?
Inner Armor ships an update every 2 weeks, and Golf PDI fortnightly. Most recently, Inner Armor was updated on October 24, 2026 and Golf PDI on October 24, 2026.

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