Comparison

Killer Butt LE vs SmartHIIT

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

Head to head
About

Killer Butt LE

Achieve a sculpted, firm, and lifted posterior with short, daily workouts. This app offers customized routines, exercise videos, and audio guidance to help you reach your fitness goals anywhere, with or without equipment.

Highlights
  • 5-minute daily butt workouts
  • Customized routines for all fitness levels
  • Video and audio exercise guidance
  • Over 25 unique exercises
  • Workout anywhere, no equipment needed
  • Interactive workout adjustments
  • Syncs with Health app
Features
Read full description

Shape, firm and lift your booty in only 5 minutes a day. With Killer Butt, you'll learn the secret moves to sculpt those hard-to-reach areas and get a butt that makes them look twice. Every workout is customized to your fitness level and to the equipment you have available. Each exercise includes an audio description to help walk you through the movement and a video you can view DURING YOUR WORKOUT, so you can always double-check your form. FEATURES • A complete leg and butt workout everyday. Strengthen and tone your butt and thighs quickly and easily. • Workouts customized for Beginner, Intermediate, and Advanced exercisers. • Over 25 unique exercises. Each one includes a video and audio description to help you perfect your form. • Works anywhere! You don't need any equipment to get a terrific workout. • lolo's beat-sync technology perfectly matches the tempo of your music to your workout. • Completely interactive. Swap out exercises to personalize your workouts. Increase or decrease the intensity at anytime and your trainer — and your music — will respond! • Sync your workouts to the Health app. • Compatible with most bluetooth heart rate monitors. If you like the FREE VERSION, CHECK OUT THE FULL VERSION to get: • Additional 10-minute and 15-minute workouts. • Nearly 50 additional exercises. • Equipment based exercises. Add stability balls, dumbbells, medicine balls, and more to your workouts to really turn up the intensity. Works with Health Compatible with Bluetooth Heart Rate Monitors

About

SmartHIIT

Features
Read full description

Lose weight at home with short HIIT workouts, no equipment, guided from start to finish. YOUR WEIGHT-LOSS PLAN Choose your goal, experience, time per workout and how many days a week you want to train. SmartHIIT builds a four-week plan of bodyweight circuits that gets a little harder every week and adapts to your feedback: too hard, and the next session eases off; too easy, and it moves ahead. When a phase ends, a new one starts with new exercises. A FULL-SCREEN 3D COACH See every move in large size while you train, with a timer you can read even with your phone on the floor. During rests the video already shows the next exercise, and the coach's voice tells you what's next. CALORIES AND PROGRESS See estimated calories for every workout and for the week, your active minutes and your streak. Take the 1-minute fitness check to track your progress. Connect Apple Health to save your workouts there. FITS YOUR ROUTINE Sessions from 10 to 30 minutes, a no-jumping option, a short version for busy days, reminders at the time you choose and a widget with your next session. FREE INTERVAL TIMER Tabata, 30/30, 40/20, 45/15 and more, with voice and beeps, even with the screen locked or your music playing. Free, always. TRY IT FIRST Your first plan session is free, no subscription needed, with the full-screen coach included. SMARTHIIT PRO Pro unlocks the full plan and its next phases, the full-screen coach in every workout, the full library of workouts and 3D exercises, the routine editor and the AI tools. Monthly and annual subscriptions include the same features. Prices, billing periods and eligible introductory offers are shown before purchase. The annual plan is billed for the full year at once. Subscriptions renew automatically unless canceled at least 24 hours before the end of the period. Manage or cancel them in your Apple Account subscriptions. Your history, saved routines and the free timer remain available after a subscription ends. Calories are estimates. SmartHIIT does not assess injuries or replace individual professional advice. Watch the moves, warm up at your own pace and stop if you feel pain or discomfort. Privacy: https://smarthiit.dltechdigital.com/privacy/ Terms: https://smarthiit.dltechdigital.com/terms.html

Screenshots

Killer Butt LE4 screens
SmartHIIT4 screens

Verdict

The call

The clearest difference is in-app purchases: Killer Butt LE at none against SmartHIIT's 2. Killer Butt LE also leads on iOS requirement (7.1 vs 18.5). SmartHIIT's advantage is update cadence (every 3 days vs every 6 months). On price, ads 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. SmartHIIT sells 2 in-app purchases, starting at $4.99 per month. Killer Butt LE asks for nothing beyond the download.

UpkeepUpdate frequency

Killer Butt LE ships an update every 6 months, SmartHIIT every 3 days. The most recent releases landed on October 20, 2026 and October 19, 2026 respectively.

Scorecard3 real differences · 7 level
Killer Butt LE versus SmartHIIT: the parameters behind the verdict, then further details
ParameterKiller Butt LESmartHIIT
PriceFreeFree
Rating4.7 (3 ratings) — better—
Positive reviews98.3% of reviews—
Number of ratings3 — better—
Update frequencyEvery 6 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreemium—
DevicesiPhone, iPod — betteriPhone
Requires iOS7.1 — better18.5
Further details — not scored
Size129 MB32 MB
Age rating4++4
DeveloperloloDiego Dias de Macedo

Bugs and requests

Killer Butt LE

Reported bugs

5 issues
  • Counting is way off
  • Software freezes randomly
  • Video and voice sync issues
  • Double counted reps on one side and didn't switch
  • Cannot connect to save info

Requested features

2 requests
  • More workout options
  • Explanations on proper exercise technique

SmartHIIT

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Killer Butt LE

No in-app purchases

2 purchases

SmartHIIT

Subscriptions2
  • SmartHIIT Pro Monthly7 Days trial$4.991 Month
  • SmartHIIT Pro Annual7 Days trial$34.991 Year

Questions

Is Killer Butt LE free?
Killer Butt LE is free to download, with no in-app purchases.
Is SmartHIIT free?
SmartHIIT is free to download, with in-app purchases available.
Do Killer Butt LE or SmartHIIT have ads?
Neither Killer Butt LE nor SmartHIIT shows ads.
Which is updated more often, Killer Butt LE or SmartHIIT?
Killer Butt LE ships an update every 6 months, and SmartHIIT every 3 days. Most recently, Killer Butt LE was updated on October 20, 2026 and SmartHIIT on October 19, 2026.

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