Comparison

PurpleShift vs Peak Strength

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

Head to head
About

PurpleShift

This app uses AI to analyze athletic movements, turning your phone into a biomechanics lab. It provides detailed scores and insights into performance categories like takeoff symmetry and explosive timing, helping athletes and coaches improve. Offers a free option with ads or a premium subscription for unlimited ad-free analysis.

Highlights
  • AI-driven vertical jump analysis
  • Form score analysis across 7 categories
  • Potential tab with perfect form calculator
  • Professional video tools (protractor, scrubber)
  • Smart athlete management (FaceID, multi-athlete)
  • Data export for coaching analysis
Features
Read full description

PurpleShift turns your phone into an AI testing lab. Measure your body, time your sprints and track your vertical, then prove it with verified results that coaches and scouts can find. DON'T JUST MEASURE. SCAN IT. Skip the tape measure. PurpleShift's AI Body Scan reads your height, wingspan and hand size from your phone's camera, and shows how confident the AI is in every reading. DON'T JUST TIME IT. BREAK IT DOWN. A stopwatch gives you one number. PurpleShift gives you the whole run, with no timing gates needed. Set your phone up at the side of the field and the AI does the rest. • Start mode measures acceleration from a standing start • Fly mode measures top-end speed from marker to marker • See your time, speed, splits, velocity curve and stride-by-stride breakdown DON'T JUST JUMP. FIX YOUR FORM. A jump test tells you how high you went. PurpleShift also tells you why. Record a standing or approach jump and get your jump height, air time and a form score, plus the extra inches better form could add. GET VERIFIED. GET RANKED. Verified results go on live PurpleShift leaderboards. Filter the rankings by test, camp or athlete and see where you stand: overall, in the 40-yard dash, the 10-yard dash, the 5-10-5 agility shuttle and more. GET SEEN WORLDWIDE Your highlights and verified results show up on the PurpleShift world map, where scouts and coaches explore athletes by location, name, result and score. SHARE YOUR RESULTS Turn any result into a branded, shareable card with your numbers, video and AI metrics, ready for your profile and social. BUILT FOR COACHES & ORGS PurpleShift Flagship gives teams, schools and programs one place to manage their athletes. • Add athletes by pasting emails, uploading a CSV or searching PurpleShift • Track who has tested and who hasn't, and invite the rest to test • Save invite lists and email athletes straight from the app FILTER. SORT. EVALUATE. The Scout Board ranks your roster by verified results, with each athlete's height, weight, position, class and school in one view. Filter and sort to find the right athletes fast.

About

Peak Strength

This app provides personalized strength training plans for athletes of all levels, featuring HD exercise demonstrations, smart exercise swaps, and auto-regulated weights. It includes sport-specific programming, warm-ups, and a built-in rest timer for efficient and effective training.

Highlights
  • Pro-level workouts tailored to training level
  • HD exercise demonstrations with technique cues
  • Smart exercise swaps for equipment availability
  • Auto-regulated weights based on set difficulty
  • Sport-specific programming
  • Mobility and warm-up routines
  • Built-in rest timer
Features
Read full description

Build strength to be a better athlete with Peak Strength—your professional strength coach in your pocket. Whether you're a beginner or an experienced lifter, our app delivers athlete-tested training plans tailored to your sport and goals. Why Athletes Love Peak Strength: • Pro-Level Workouts - Get pro athlete workouts adjusted for your training level and see real results fast. • Exercise Demonstrations – HD videos and technique cues for every movement, so you always train with proper form. • Smart Exercise Swaps – Someone is on your equipment? No problem. Instantly replace any exercise with a similar alternative. • Auto-Regulated Weights – Rate each set’s difficulty, and the app adjusts as you progress. • Built-In Rest Timer – Stay on track with timed rest periods between sets. • Sport-Specific Programming – Train for football, basketball, combat sports, or general athleticism with optimized periodization. • Mobility & Warm-Ups Included – Prep your body properly and reduce injury risk. • Simple, Intuitive Design – Log sets, track progress, and follow workouts with ease. What Users Are Saying: • "The videos and cues saved me as a beginner—I finally learned how to lift correctly!"
 • "The exercise swap feature is a game-changer, especially when traveling." • "Love the auto weight suggestions—takes the guesswork out of training."
 • "The programming is genius. I’ve never made progress this fast." Be confident your training plan will deliver results. Download Peak Strength today and train smarter, push your limits, and reach your goals. "It’s like having a pro coach in your pocket!" ------ Peak Strength is free to download. Ongoing use requires an active subscription, available on a monthly or yearly basis. You can cancel anytime. Your iTunes Account will be charged at purchase unless your subscription includes a free trial. If a free trial applies, your iTunes Account will be charged at the end of the trial unless you cancel at least one day before the trial ends. All subscriptions renew automatically, meaning your iTunes Account will be charged for renewal within one day before the end of your current billing cycle, unless you cancel. You can manage or cancel your subscription and turn off auto-renew at any time through your iTunes Account settings. By completing the purchase, you agree to Peak Strength’s Terms of Service (https://www.apple.com/legal/internet-services/itunes/dev/stdeula/) and Privacy Policy (https://peakstrength.app/privacy).

Screenshots

PurpleShift4 screens
Peak Strength4 screens

Verdict

The call

The clearest difference is monetization model: PurpleShift at free with in-app purchases against Peak Strength's subscription. PurpleShift also leads on update cadence (weekly vs every 5 weeks). Peak Strength's advantage is ads (none vs shown) and ratings volume (1.5K vs 10). On price, rating, in-app purchases 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. PurpleShift sells 15 in-app purchases, starting at $9.99 per month and Peak Strength sells 6 in-app purchases, starting at $39.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for PurpleShift against 4.8 for Peak Strength. That said, the two scores are not equally well evidenced: Peak Strength has 1.5K ratings behind it against 10, so its average is the more settled of the two. Written reviews are what separate them: 50% of PurpleShift's written reviews are positive against 72% of Peak Strength's.

UpkeepUpdate frequency

PurpleShift ships an update weekly, Peak Strength every 5 weeks. Both last shipped on October 24, 2026.

Scorecard5 real differences · 5 level
PurpleShift versus Peak Strength: the parameters behind the verdict, then further details
ParameterPurpleShiftPeak Strength
PriceFreeFree
Rating4.8 (10 ratings) — better4.8 (1.5K ratings)
Positive reviews50.0% of reviews71.9% of reviews — better
Number of ratings101.5K — better
Update frequencyWeekly — betterEvery 5 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0.0 — better16.4
Further details — not scored
Size595 MB91 MB
Age rating4+12+
DeveloperPURPLESHIFT LLCGarage Strength

Customer experience

PurpleShift

All ratings10 ratings
Positive90.0%
Neutral10.0%
Negative0.0%
Written reviews6 reviews
Positive50.0%
Neutral16.7%
Negative33.3%

Peak Strength

All ratings1,458 ratings
Positive95.2%
Neutral2.1%
Negative2.7%
Written reviews139 reviews
Positive71.9%
Neutral7.9%
Negative20.1%

Bugs and requests

PurpleShift

Not enough reviews yet to summarise bugs or requests.

Peak Strength

Reported bugs

3 issues
  • App crashing when phone is locked or times out
  • Issues with weight and rep recommendations
  • Workout progress not saving properly

Requested features

5 requests
  • Offline mode with local data caching
  • More dynamic and sport-specific exercises
  • Ability to pause/resume workouts
  • Integration with wearable devices
  • Better calendar and scheduling features

In-app purchases

15 purchases

PurpleShift

Subscriptions6
  • Tier 1 Monthly$9.991 Month
  • Tier 2 Monthly Subscription$39.991 Month
  • Tier 3 Monthly Subscription$49.991 Month
Show 3 more
  • Tier 1 Yearly Subscription$109.991 Year
  • Tier 2 Yearly Subscription$459.991 Year
  • Tier 3 Yearly Subscription$579.991 Year
One-time9
  • Expedite Verification$0.99
  • Single PurpleShift Lab Coin$1.99
  • Single Verification Coins$4.99
Show 6 more
  • 10 Pack PurpleShift Lab$9.99
  • Unlimited Verifications Weekly$19.99
  • Unlimited Sprint Coins WK$24.99
  • 10 Pack Verification Coins$39.99
  • Unlimited Verification Monthly$49.99
  • Unlimited Sprint Coins Monthly$59.99
6 purchases

Peak Strength

Subscriptions6
  • Monthly7 Days trial$39.991 Month
  • Monthly1 Month trial$39.991 Month
  • Annual7 Days trial$299.001 Year
Show 3 more
  • Annual1 Year trial$299.001 Year
  • Annual7 Days trial$399.991 Year
  • Annual1 Year trial$399.991 Year

Questions

Is PurpleShift free?
PurpleShift is free to download, with in-app purchases available.
Is Peak Strength free?
Peak Strength is free to download, with in-app purchases available.
Which has better reviews, PurpleShift or Peak Strength?
PurpleShift is rated higher. PurpleShift averages 4.8 out of 5 from 10 ratings, while Peak Strength averages 4.8 from 1.5K ratings.
Do PurpleShift or Peak Strength have ads?
PurpleShift shows ads; Peak Strength does not.
Which is updated more often, PurpleShift or Peak Strength?
PurpleShift ships an update weekly, and Peak Strength every 5 weeks. Most recently, PurpleShift was updated on October 24, 2026 and Peak Strength on October 24, 2026.

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