Comparison

Volt vs Nu

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

Head to head
About

Volt

This app provides AI-powered, personalized workout plans that adapt weekly to your fitness goals and available equipment. It offers structured training for general fitness, sport performance, and tactical readiness, with over 3,000 exercises and HD video demonstrations.

Highlights
  • AI-powered adaptive workout plans
  • Home and gym training options
  • Sport-specific training programs
  • Tactical readiness programs
  • Equipment customization
  • Progressive weight and rep suggestions
  • Exercise library with video demonstrations
Features
Read full description

Train with a real strength & conditioning plan built for your sport, your goals, and your life. Built by CSCS-certified coaches. Personalized by AI. Trusted by 2M+ athletes. Volt gives you more than workouts. You get a complete training plan designed around where you want to go — and intelligent guidance that adapts as you get stronger. Choose your sport or fitness goal, then tell Volt about your schedule, experience, equipment, training preferences, and timeline. Volt builds your plan. Cortex® AI personalizes your weights and adapts your training as you progress. REAL STRENGTH & CONDITIONING — Built by certified coaches, not generated one workout at a time. BUILT FOR YOUR SPORT & GOALS — Train for Sport Performance, Fitness & Strength, or Tactical Readiness. PERSONALIZED TO YOU — Customized to your training experience, strength, schedule, available equipment, session length, training preferences, and timeline. AI THAT ADAPTS TO YOUR STRENGTH — No guessing what to lift. Cortex® AI learns your strength to personalize your exercises, sets, reps, and weights — and evolves your plan as you get stronger. SCIENCE-BACKED PROGRESSION — Volt applies proven strength & conditioning principles to progress your training over time. EVERYTHING YOU NEED TO TRAIN: • Personalized sets, reps, weights, and exercises • Flexible training schedules and session lengths • Equipment-based customization • Smart exercise substitutions • HD exercise demonstrations and coaching instructions • 1,500+ movements • Workout history and strength tracking • Estimated 1RMs and progress insights • Milestones and achievements • Apple Health integration TRAINING PROGRAMS: • All-Around Athlete • Baseball • Basketball • Football • Golf • Ice Hockey • Lacrosse • Lean & Mean • P.E. • Rugby • Soccer • Softball • Strength & Size • Swimming • Tactical Readiness • Track & Field • Volleyball • Weight Loss • Wrestling JOIN 2M+ ATHLETES TRAINING WITH VOLT — Download Volt and start your free trial. Volt is free to download. Continued use requires an active monthly, quarterly, or yearly subscription. All plans currently include a free trial. Payment is charged to your Apple Account at confirmation of purchase or when your trial ends. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current billing period. You can manage or cancel your subscription in your App Store account settings. Terms of Use: https://www.voltathletics.com/terms Privacy Policy: https://www.voltathletics.com/privacy

About

Nu

This app uses AI to provide personalized meal recommendations based on your fitness goals, dietary restrictions, and preferences. It simplifies food logging and offers instant meal inspiration for various eating scenarios, making healthy eating convenient for busy individuals.

Highlights
  • Personalized AI nutrition assistant
  • Effortless voice-activated food logging
  • Instant meal inspiration for dining halls
  • Restaurant and menu item recommendations
  • Tailored to fitness goals and preferences
  • Designed for busy schedules
Features
Read full description

Meet Nu-Trai Nu-Trai is an AI-powered nutrition and macro-tracking app designed for university students. It provides daily menu information for more than 350 university dining halls and helps students find, log, and plan meals that fit their nutrition goals. Unlike traditional food-tracking apps that require students to manually search a database for foods, Nu-Trai is designed to make nutrition tracking easier. Nu-Trai creates a personalized nutrition profile using your goals, activity level, dietary restrictions, food preferences, and favorite cuisines. It then recommends meals that fit your needs—whether you are eating at a university dining hall, ordering from a nearby restaurant, cooking at home, or grabbing food on the go. Personalized meal recommendations Ask Nu-Trai questions such as: - “What should I eat for dinner?” - “Where should I eat on campus?” - “What restaurant meal fits my remaining macros?” - “Do I have room for dessert?” Nu-Trai uses your personal profile, daily nutrition progress, preferences, and remaining calorie and macro targets to suggest relevant meal options. Natural-language food logging Log food by describing what you ate. For example: - “8 ounces of grilled chicken with rice and broccoli.” Nu-Trai estimates and records calories, protein, carbohydrates, and fat without requiring you to manually search through a food database. Multiple ways to log food Nu-Trai supports several food-logging methods: - Voice logging: Say what you ate. - Natural-language logging: Type a description of your meal. - Nutrition-label scanning: Take a photo of a nutrition label to record its information. Campus dining guidance At supported universities, Nu-Trai helps students explore dining hall menus and identify meals that fit their nutrition goals, food preferences, and dietary restrictions. Students can use Nu-Trai to see what is being served, decide where to eat on campus, and log dining hall meals more easily. Restaurant and everyday meal planning Nu-Trai can recommend meals from nearby restaurants and help users plan meals at home or on the go. Recommendations account for each user’s preferences, dietary restrictions, goals, and remaining daily calorie and macro targets. Built for busy lives Nu-Trai reduces the time required to plan meals and track nutrition. It is designed for university students, athletes, and other busy people who want to understand what they are eating without manually searching food databases or entering every ingredient. A New Try at Nutrition. Nu-Trai is developed and operated by Nutrai LLC. Nu-Trai is available on the Google Play Store. Terms of Use See here: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Disclaimer Nutrai does not provide medical advice. All recommendations should be viewed as suggestions and should not be considered a substitute for professional guidance. Please consult a qualified healthcare provider and do your own research before making changes to your diet or nutrition plan. Subscription Nutrai is free to download. A subscription is required to access personalized nutrition coaching, meal recommendations, and tracking features. Plans: Monthly $5.99 Annual $29.99 w/ 7 Day Free Trial Subscription renews automatically unless canceled at least 24 hours before the end of the period. Manage or cancel in your Apple ID Subscriptions.

Screenshots

Volt4 screens
Nu4 screens

Verdict

The call

The clearest difference is review sentiment: Nu at 100% against Volt's 75%. Nu also leads on rating (5.0 vs 4.7). Volt's advantage is ratings volume (17K vs 34) and update cadence (every 5 days vs every 3 weeks). On price, ads, in-app purchases and monetization model 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. Volt sells 10 in-app purchases, starting at $9.99 per month and Nu sells 7 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Nu holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Volt has 17K ratings behind it against 34, so its average is the more settled of the two. Written reviews point the same way: 75% of Volt's written reviews are positive against 100% of Nu's.

UpkeepUpdate frequency

Volt ships an update every 5 days, Nu every 3 weeks. Both last shipped on October 22, 2026.

Scorecard4 real differences · 6 level
Volt versus Nu: the parameters behind the verdict, then further details
ParameterVoltNu
PriceFreeFree
Rating4.7 (17K ratings)5.0 (34 ratings) — better
Positive reviews74.7% of reviews100.0% of reviews — better
Number of ratings17K — better34
Update frequencyEvery 5 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.615.6
Further details — not scored
Size100 MB63 MB
Age rating12+4+
DeveloperVolt Athletics, Inc.Nutrai LLC

Customer experience

Volt

All ratings16,921 ratings
Positive94.1%
Neutral2.5%
Negative3.4%
Written reviews273 reviews
Positive74.7%
Neutral5.9%
Negative19.4%

Nu

All ratings34 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Volt

Reported bugs

2 issues
  • Login issues and inability to retrieve password
  • Syncing problems causing workouts to reset

Requested features

6 requests
  • Add optional alert tone for rest periods
  • Integrate with Apple Health
  • Offer more than 3 days per week programming
  • Add injury-specific workouts
  • Provide more cardio and conditioning options
Show 1 more
  • Allow editing of workout history

Nu

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Volt

Subscriptions10
  • Volt Training3 Days trial$9.991 Month
  • Volt Training7 Days trial$9.991 Month
  • Sport Performance Training3 Days trial$9.991 Month
Show 7 more
  • Volt Training2 Months trial$14.991 Month
  • Sport Performance Training7 Days trial$19.993 Months
  • Training Monthly Plan3 Days trial$19.991 Month
  • Volt Training1 Month trial$29.991 Month
  • Training 3 Month Plan7 Days trial$39.993 Months
  • Sport Performance Training14 Days trial$69.991 Year
  • Training Yearly Plan14 Days trial$129.991 Year
7 purchases

Nu

Subscriptions7
  • Nutrai - Elite7 Days trial$5.991 Month
  • Nutrai - Elite$5.991 Month
  • Nutrai - Standard7 Days trial$6.991 Month
Show 4 more
  • Nutrai - Elite7 Days trial$9.991 Month
  • Nutrai - Elite$29.991 Year
  • Nutrai - Standard7 Days trial$51.991 Year
  • Nutrai - Elite7 Days trial$74.991 Year

Questions

Is Volt free?
Volt is free to download, with in-app purchases available.
Is Nu free?
Nu is free to download, with in-app purchases available.
Which has better reviews, Volt or Nu?
Nu is rated higher. Volt averages 4.7 out of 5 from 17K ratings, while Nu averages 5.0 from 34 ratings.
Do Volt or Nu have ads?
Neither Volt nor Nu shows ads.
Which is updated more often, Volt or Nu?
Volt ships an update every 5 days, and Nu every 3 weeks. Most recently, Volt was updated on October 22, 2026 and Nu on October 22, 2026.

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