Comparison

Spartn! vs BuiltDiff

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

Head to head
About

Spartn!

This AI-powered fitness and nutrition app helps users achieve real results by tracking workouts, monitoring nutrition, and following structured programs. It offers real-time insights, personalized AI coaching, and recovery guidance to adapt training to individual progress.

Highlights
  • AI-powered personalized coaching
  • Workout and nutrition tracking
  • Structured program library
  • Real-time performance insights
  • Recovery score and guidance
  • Meal tracking with barcode scanning
Features
Read full description

Spartn — Train Smarter. Stay Consistent. Spartn is an AI-powered fitness and nutrition app that helps you get better results with less guesswork. Track workouts, log meals, and follow trainer-built programs in one place. Connect Apple Watch for real-time heart rate and training intensity insights, then use Recovery Score to know when to push and when to recover. What you can do with Spartn: • Track sets, reps, and weight • Follow structured programs from real trainers • Generate AI workouts tailored to your progress • Log nutrition with barcode scanning, macros, and custom recipes • Monitor steps and daily activity goals • Get personalized coaching feedback and performance insights Spartn Pro includes: • Unlimited AI workouts • Advanced insights and analytics • Voice meal logging • Unlimited custom recipes • Access to premium features Train smarter. Recover better. Stay consistent.

About

BuiltDiff

Log your weightlifting sets and reps with a clean, distraction-free interface. Visualize your progress with charts and personalize the app's appearance. Enjoy offline functionality and a sign-up-free experience for efficient workouts.

Highlights
  • Log lifts, sets, and reps
  • Create custom workout routines
  • Offline functionality
  • Sign-up-free experience
  • Visualize progress with charts
  • Personalize app appearance
Features
Read full description

Track your lifts, sets, and reps and watch your strength soar! Enjoy a clean and simple design that makes navigation a breeze. Focus on your workout without any distractions, making your lifting sessions efficient and effective. Features: - watchOS companion app - Tailor your own workout routines - No internet connection needed - Sign up-free experience - Convenient keyboard add-ons for efficient logging of weights and reps - Permanent recording of all your lifts - Visualize your lifting progression through charts - Select your preferred color and personalize the app to make it uniquely yours

Screenshots

Spartn!4 screens
BuiltDiff4 screens

Verdict

The call

The clearest difference is in-app purchases: BuiltDiff at none against Spartn!'s 3. BuiltDiff also leads on ads (none vs shown). On price, rating, ratings volume and update cadence 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. Spartn! sells 3 in-app purchases, starting at $9.99 per month. BuiltDiff asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Spartn! against 5.0 for BuiltDiff. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

UpkeepUpdate frequency

Spartn! ships an update monthly, BuiltDiff every 2 weeks. Both last shipped on November 4, 2026.

Scorecard3 real differences · 6 level
Spartn! versus BuiltDiff: the parameters behind the verdict, then further details
ParameterSpartn!BuiltDiff
PriceFreeFree
Rating5.0 (2 ratings)5.0 (2 ratings)
Number of ratings22
Update frequencyMonthlyEvery 2 weeks — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, Apple WatchiPhone, iPad, Apple Watch — better
Requires iOS16.6 — better17.0
Further details — not scored
Size136 MB3 MB
Age rating12+4+
DeveloperClevorTimmy Nguyen

Customer experience

Spartn!

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

BuiltDiff

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Spartn!

Subscriptions3
  • Spartn Premium$9.991 Month
  • Spartn Trainer Pro$39.991 Month
  • Spartn Pro Yearly Subscription3 Days trial$69.991 Year
None

BuiltDiff

No in-app purchases

Questions

Is Spartn! free?
Spartn! is free to download, with in-app purchases available.
Is BuiltDiff free?
BuiltDiff is free to download, with no in-app purchases.
Which has better reviews, Spartn! or BuiltDiff?
Spartn! and BuiltDiff are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.
Do Spartn! or BuiltDiff have ads?
Spartn! shows ads; BuiltDiff does not.
Which is updated more often, Spartn! or BuiltDiff?
Spartn! ships an update monthly, and BuiltDiff every 2 weeks. Most recently, Spartn! was updated on November 4, 2026 and BuiltDiff on November 4, 2026.

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