PurpleShift vs Peak Strength
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
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.
- 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
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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
Verdict
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
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.
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.
PurpleShift ships an update weekly, Peak Strength every 5 weeks. Both last shipped on October 24, 2026.
| Parameter | PurpleShift | Peak Strength |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (10 ratings) — better | 4.8 (1.5K ratings) |
| Positive reviews | 50.0% of reviews | 71.9% of reviews — better |
| Number of ratings | 10 | 1.5K — better |
| Update frequency | Weekly — better | Every 5 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases — better | Subscription |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 595 MB | 91 MB |
| Age rating | 4+ | 12+ |
| Developer | PURPLESHIFT LLC | Garage Strength |
Customer experience
PurpleShift
Peak Strength
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
PurpleShift
- Tier 1 Monthly$9.991 Month
- Tier 2 Monthly Subscription$39.991 Month
- Tier 3 Monthly Subscription$49.991 Month
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- Tier 1 Yearly Subscription$109.991 Year
- Tier 2 Yearly Subscription$459.991 Year
- Tier 3 Yearly Subscription$579.991 Year
- Expedite Verification$0.99
- Single PurpleShift Lab Coin$1.99
- Single Verification Coins$4.99
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- 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
Peak Strength
- Monthly7 Days trial$39.991 Month
- Monthly1 Month trial$39.991 Month
- Annual7 Days trial$299.001 Year
Show 3 moreShow fewer
- Annual1 Year trial$299.001 Year
- Annual7 Days trial$399.991 Year
- Annual1 Year trial$399.991 Year
Questions
Is PurpleShift free?
Is Peak Strength free?
Which has better reviews, PurpleShift or Peak Strength?
Do PurpleShift or Peak Strength have ads?
Which is updated more often, PurpleShift or Peak Strength?
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