Comparison

STRNTH vs ClearHiiT

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

Head to head
About

STRNTH

Features
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16 progressive programmes with planned deloads. Track every lift with 1RM, PRs and plateau alerts. Run HIIT with live heart rate. Get a weekly AI coach. Import your training history from another app. Strength training built for lifters in their 30s, 40s and beyond. Most apps are written for 25-year-olds. STRNTH is for people who have lifted before, or are starting now, and want to train for the long game. Open the app, your session is ready, and log a set in two taps. Free forever No card required, no time limit. These features stay free. - Workout logging across sets, reps and weight, including bodyweight, assisted and added load - Built-in programs with multi-week blocks and deloads baked in - Two-tap exercise swaps mid-workout - Rest and tempo timers with voice cues - HIIT preset library with Bluetooth heart rate and smart-trainer support - Body composition with caliper body fat, waist to height and fuel guidance - The STRNTH Index, PRs by muscle group and a year-long trend line - Customisable home dashboard with drag-and-drop widgets - Fatigue-aware readiness chip based on training stress and age - Ask STRNTH library of curated answers on training, recovery and nutrition - Workout history with charts, PR badges and exercise breakdowns - Progress photos with a before and after compare, locked behind Face ID - Import your workout history from other workout apps - Cardio logging for runs, rides, walks and swims, with pace and distance - Quick workouts and targeted sessions by muscle group or time - Adaptive resistance that holds your heart-rate zone on a smart trainer - Training block reviews with a shareable summary after each block - PT summary to hand your numbers to a personal trainer STRNTH Plus (Requires paid plan) Add custom content and unlock the full catalogue. - Custom programs: design a 4, 8 or 12 week block with your own splits and lifts - Custom workouts built from scratch - Custom HIIT with your own blocks and timing - Add your own exercises with muscle group tagging - Full program catalogue and full training history - Log workouts retroactively on past dates STRNTH Pro (Requires paid plan) Everything in Plus, with cloud backup and the age-aware AI coach. - Cloud backup. Sync across devices, reinstall without losing data - Age-aware AI coaching weekly review of readiness, training density and recent volume - Ask STRNTH AI: free-form questions answered with your last six months of training - Save adapted workouts when you change exercises mid-session - Plateau coaching when a lift stalls - Build this week from your recent training - Community programs: publish and enroll with other Pro members - Connect your AI assistant (beta, Pro) and build strength workouts, programmes and HIIT sessions - Build workouts and HIIT with AI by describing them in plain words Paid plan details STRNTH Plus and STRNTH Pro are auto-renewing paid plans, billed monthly or yearly. Payment will be charged to your Apple ID account at the confirmation of purchase. Your paid plan automatically renews unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your paid plan in your account settings on the App Store. STRNTH is built by Billy, a developer-lifter who got tired of fitness apps that treated him like a 22-year-old. Quiet by design. Honest about pricing. Built for the long game. Terms of use: https://strnthapp.com/terms Privacy policy: https://strnthapp.com/privacy

About

ClearHiiT

Features
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ClearHiiT is the workout interval timer built for HIIT, Tabata, Treadmill, Circuit, and Spin training. Build workouts in seconds, organise them into folders, and let clear voice cues guide you through every interval—without constantly checking your screen. Build Better Workouts : Start with a quick preset or build your workout from scratch. Set warm-up, work, recovery, cooldown, and transition intervals with complete control. Create unlimited workouts and organise them into folders by training style, fitness goal, athlete, client, or family member. Dedicated Tabata Sessions: Create dedicated Tabata workouts with the classic work and recovery structure built in. Optionally enter the exercise on each work phase, then start training. Train Without Watching the Screen: Press Start and focus on your workout. Clear voice prompts and audio cues play over your music, podcast, or audiobook, telling you when to work, recover, and transition. Choose extended voice prompts for more guidance, or use minimal prompts when you want fewer interruptions. Landscape Workout Display: Turn your iPhone sideways for a clear, easy-to-read landscape workout display. See the current interval, countdown, and workout information at a glance while training, making it ideal for treadmill sessions, gym workouts, or when your phone is positioned at a distance. Choose Your Workout Mode Standard: Flexible interval training for HIIT, strength training, boxing, rowing, bodyweight workouts, and more. Tabata: A dedicated Tabata session with optional exercise descriptions on the work phases. Treadmill: Set target speed and incline for every interval, so you know exactly what to set for each phase. Circuit: Name every exercise and follow your circuit without having to remember what's next. Spin: Set target difficulty and power for every interval, giving every effort a clear goal. Train From Your Wrist: Start and follow workouts directly from Apple Watch, with live synchronisation to your iPhone. Keep Training With Your Phone Locked: Put your phone in your pocket and concentrate on the workout. ClearHiiT keeps your intervals running with the screen locked and delivers your cues when you need them. When the final interval ends, you'll know you've finished exactly the workout you planned. Features • Organise workouts into folders • Create separate workout libraries for yourself, clients, friends, or family • Unlimited custom workouts • Quick-start workout presets • Full control over every workout phase • Standard, Tabata, Treadmill, Circuit, and Spin modes • Dedicated Tabata session configuration • Per-interval treadmill speed and incline targets • Named exercises for circuit workouts • Per-interval difficulty and power targets for Spin workouts • Extended voice prompts and audio cues over your music • Minimal voice prompts option • Countdown flash before every interval • Portrait and landscape workout displays • Background timing with the screen locked • Apple Watch app with live iPhone synchronisation • Tidal and Daybreak themes • English, Spanish, French, and German No clutter. No subscription. No data collected. Just your workout, on time.

Screenshots

STRNTH4 screens
ClearHiiT4 screens

Verdict

The call

The clearest difference is device support: STRNTH at 4 against ClearHiiT's 2. On price, update cadence, ads and in-app purchases 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. STRNTH sells 5 in-app purchases, starting at $4.99 per month and ClearHiiT sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on September 18, 2026 and September 28, 2026 respectively.

Scorecard1 real difference · 5 level
STRNTH versus ClearHiiT: the parameters behind the verdict, then further details
ParameterSTRNTHClearHiiT
PriceFreeFree
Update frequencyEvery 5 daysEvery 5 days
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, Apple Watch
Requires iOS15.1 — better16.4
Further details — not scored
Size74 MB32 MB
Age rating4+12+
DeveloperNext Big Leap LtdGeorge Gaskin

In-app purchases

5 purchases

STRNTH

Subscriptions5
  • STRNTH Plus Monthly$4.991 Month
  • STRNTH Pro Monthly$14.991 Month
  • STRNTH Plus Annual$44.991 Year
Show 2 more
  • STRNTH Pro Founder Yearly$54.991 Year
  • STRNTH Pro Yearly$99.991 Year
1 purchases

ClearHiiT

One-time1
  • Lifetime Unlock$3.99

Questions

Is STRNTH free?
STRNTH is free to download, with in-app purchases available.
Is ClearHiiT free?
ClearHiiT is free to download, with in-app purchases available.
Do STRNTH or ClearHiiT have ads?
Neither STRNTH nor ClearHiiT shows ads.
Which is updated more often, STRNTH or ClearHiiT?
STRNTH ships an update every 5 days, and ClearHiiT every 5 days. Most recently, STRNTH was updated on September 18, 2026 and ClearHiiT on September 28, 2026.

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