Comparison

Diofit vs PrepFit

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

Head to head
About

Diofit

Features
Read full description

PLEASE NOTE: YOU NEED A DIOFIT ACCOUNT TO ACCESS THIS APP. IF YOU'RE A MEMBER GET IT FOR FREE AT YOUR GYM! Begin your journey to a healthier lifestyle and let Diofit help you along the way. Introducing Diofit, most comprehensive fitness platform with: Check class schedules and opening hours Track your daily fitness activities Track your weight and other body metrics Over 2000+ exercises and activities Clear 3D exercise demonstrations Preset workouts and the option to create your own Over 150 badges to earn Select workouts online and synchronize them with your app to workout at home or in the gym while keeping track of your progress. From strength to weight lifting, this app acts as your own personal trainer guiding and giving you the motivation you need. You can sync this app with Apple Health App. If you enable this connection, any workout in the Health app with automatically be added to your Activity Calendar.

About

PrepFit

Features
Read full description

PrepFit is the ultimate military-style fitness tracker built for people who take their training seriously. Train with purpose. Every workout earns you PrepPoints that push you up the military rank ladder — from Rekruut all the way to Legende. Are you ready to earn your rank? FEATURES ā–ø WORKOUT PROGRAMS Follow structured training programs or build your own custom workouts. Track every rep, set, and session. ā–ø AI COACH REX (Pro) Your personal AI coach powered by advanced intelligence. Get personalized training advice, program suggestions, and motivation — available 24/7. ā–ø MILITARY RANK SYSTEM Earn PrepPoints with every workout and climb 10 military ranks. Show your dedication on the leaderboard. ā–ø DAILY CHALLENGES Complete daily and weekly missions to earn bonus points. Seasonal events bring special limited-time challenges. ā–ø HEALTH & PERFORMANCE Deep HealthKit integration tracks your heart rate, HRV, sleep quality, steps, and calories — giving you a full picture of your recovery and readiness. ā–ø LEADERBOARD & PREPFAMILY Compete with friends and family in real time. Share progress, celebrate milestones, and push each other harder. ā–ø APPLE WATCH Full native watchOS app for tracking workouts directly from your wrist — no phone needed during training. ā–ø WIDGETS & SIRI Add home screen widgets to track your streak and daily mission at a glance. Use Siri to start workouts hands-free. ā–ø ROUTE TRACKING GPS route maps for outdoor runs and rides. Export your routes and share your sessions. ā–ø PROGRESS CHARTS (Pro) Beautiful charts showing your performance over time — points, workouts, and streaks visualized week by week. PREPFIT PRO Unlock the full PrepFit experience with a one-time purchase: • AI Coach REX • Custom Workout Builder • Progress Charts • Pro Badge on your profile No subscriptions. One price. Yours forever. Download PrepFit and start your mission today.

Screenshots

Diofit4 screens
PrepFit4 screens

Verdict

The call

The clearest difference is in-app purchases: Diofit at none against PrepFit's 1. Diofit also leads on iOS requirement (13.0 vs 17.6). PrepFit's advantage is update cadence (daily vs every 7 months). On price, ads and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. PrepFit sells 1 one-off in-app purchase. Diofit asks for nothing beyond the download.

UpkeepUpdate frequency

Diofit ships an update every 7 months, PrepFit daily. The most recent releases landed on October 14, 2026 and October 4, 2026 respectively.

Scorecard3 real differences Ā· 3 level
Diofit versus PrepFit: the parameters behind the verdict, then further details
ParameterDiofitPrepFit
PriceFreeFree
Update frequencyEvery 7 monthsDaily — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 — better17.6
Further details — not scored
Size195 MB7 MB
Age rating12+4+
DeveloperDioFit Venray B.V.Michael Stuut

In-app purchases

None

Diofit

No in-app purchases

1 purchases

PrepFit

One-time1
  • Prepfit Pro$3.99

Questions

Is Diofit free?
Diofit is free to download, with no in-app purchases.
Is PrepFit free?
PrepFit is free to download, with in-app purchases available.
Do Diofit or PrepFit have ads?
Neither Diofit nor PrepFit shows ads.
Which is updated more often, Diofit or PrepFit?
Diofit ships an update every 7 months, and PrepFit daily. Most recently, Diofit was updated on October 14, 2026 and PrepFit on October 4, 2026.

Other comparisons