Comparison

KOBP Strength vs CurlBro

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

Head to head
About

KOBP Strength

This app helps serious lifters track every set, benchmark their strength against global standards, and receive AI-driven coaching. It offers detailed progress charts, global leaderboards, and shareable session summaries. Users can import existing training data to get started quickly.

Highlights
  • Strength percentile rankings
  • AI coaching based on training data
  • Track every lift with precision
  • Global leaderboard for top sets
  • Import training history from any format
  • Shareable session summary cards
Read full description

Most workout apps are built for casual fitness. KOBP Strength is built for people who actually want to get stronger. Log every set. See where you rank globally. Get AI coaching based on your actual numbers; not generic advice. STRENGTH PERCENTILE RANKINGS Every lift is benchmarked against real-world standards. Know exactly where you stand; Beginner, Novice, Intermediate, Advanced, or Elite — relative to your bodyweight. Stop guessing. Start knowing. COACH AI Not generic tips. Coach AI reads your full training history and gives you the same feedback you'd pay a personal trainer $100/hour for — specific weights, rep targets, frequency adjustments, and PR predictions based on your actual progression rate. Available with Premium. Optionally reads Apple Health for recovery context. YOUR SESSION. YOUR ANIMAL. Every session generates a shareable 1080×1080 card showing your volume tier — Field Mouse, Grizzly Bear, Silverback, Elephant, and more. One tap to save or post anywhere. TRACK EVERY LIFT Log sets, reps, and weight with speed and precision. 30+ standard lifts across every muscle group. Custom lifts. Superset support. Copy previous session. Progress charts for every movement. GLOBAL LEADERBOARD See how your top sets stack up worldwide. Import competitors via share link. Friendly competition drives results. IMPORT AI Already have training history somewhere else? Import AI reads any format — CSV, screenshot, photo of your logbook, copied notes — and brings it all in automatically. No template required. FREE. FOREVER. Free account includes full progress charts, complete history, session share cards, strength percentile rankings, global leaderboard, and automatic cloud backup; no subscription required. Premium ($49.99/year or $6.99/month) adds Coach AI, Import AI, up to 5 lifters, custom lifts, bodyweight tracking, volume analytics, and CSV export. If you're tired of guessing and ready to train with intent; download KOBP Strength and start building real strength. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

CurlBro

This strength-training app allows users to build, run, and log detailed workout sessions. It features an offline-first design with no account or subscription required, focusing on a clean tool for experienced lifters.

Highlights
  • Drag-to-reorder workout builder
  • Superset grouping
  • Built-in workout templates
  • Per-set logging
  • Rest timer with Live Activity
  • Full workout history
  • Share/import workouts as text
Features
Read full description

Build a workout that fits your day, track every set, and see the work add up. CurlBro keeps planning, tracking, rest, and review in one place. Start with a built-in workout, make your own, or get a little help choosing what comes next. TRACK EVERY SET Record reps, weight, time, and distance. Adjust your sets as you go, add notes, and keep a clear record of what you actually did. TAKE YOUR REST Rest is part of the plan. Your timer can start automatically between working sets and superset rounds. Adjust it as you go, or keep an eye on it from the Lock Screen and Dynamic Island with Live Activities on supported iPhones. SEE THE WORK ADD UP Finish with a session summary, then explore your workout history, training volume, and exercise progress. Check what you lifted last time and how your training has changed over time. BUILD YOUR KIND OF WORKOUT Choose exercises, set reps and rest, arrange supersets, and save workouts to use again. Or let CurlBro put a session together around your time, equipment, and preferences, then make it your own. GET A LITTLE HELP WITH WHAT'S NEXT Find exercise suggestions based on the workout you're building. Explore additions, superset pairings, and alternatives when you want to change a movement. MAKE IT YOURS Create custom exercises, share your workouts, and import routines shared from CurlBro. You can also save completed strength workouts to Apple Health. You bring the effort. CurlBro keeps the details.

Screenshots

KOBP Strength4 screens
CurlBro4 screens

Verdict

The call

The clearest difference is in-app purchases: CurlBro at none against KOBP Strength's 2. CurlBro also leads on ratings volume (4 vs 1). On price, rating, update cadence and ads 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. KOBP Strength sells 2 in-app purchases, starting at $6.99 per month. CurlBro 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 KOBP Strength against 5.0 for CurlBro. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

UpkeepUpdate frequency

KOBP Strength ships an update every 6 days, CurlBro every 11 days. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

Scorecard3 real differences · 7 level
KOBP Strength versus CurlBro: the parameters behind the verdict, then further details
ParameterKOBP StrengthCurlBro
PriceFreeFree
Rating5.0 (1 ratings)5.0 (4 ratings)
Positive reviews—100.0% of reviews
Number of ratings14 — better
Update frequencyEvery 6 days — betterEvery 11 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad — betteriPhone
Requires iOS16.6 — better17.0
Further details — not scored
Size38 MB29 MB
Age rating12+4+
DeveloperBRIAN PEREZSIMONE LONGO

Customer experience

KOBP Strength

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

CurlBro

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

KOBP Strength

Subscriptions2
  • KOBP Fitness Premium-monthly$6.991 Month
  • KOBP Fitness Premium-Annual$49.991 Year
None

CurlBro

No in-app purchases

Questions

Is KOBP Strength free?
KOBP Strength is free to download, with in-app purchases available.
Is CurlBro free?
CurlBro is free to download, with no in-app purchases.
Which has better reviews, KOBP Strength or CurlBro?
KOBP Strength and CurlBro are both rated 5.0 out of 5 on the App Store, from 1 and 4 ratings respectively.
Do KOBP Strength or CurlBro have ads?
Neither KOBP Strength nor CurlBro shows ads.
Which is updated more often, KOBP Strength or CurlBro?
KOBP Strength ships an update every 6 days, and CurlBro every 11 days. Most recently, KOBP Strength was updated on October 24, 2026 and CurlBro on October 16, 2026.

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