Simply5x5 vs FlexLft
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Simply5x5
This app simplifies strength training by automating progression and deloads for the StrongLift 5x5 program. It offers AI-driven workout analysis, a plate calculator, and detailed progress tracking.
- Automated progression and deloads
- AI session briefing and analysis
- Warm-up and plate calculator
- Strength ranking by lift and total
- Detailed progress tracking charts
- Workout history with calendar view
- Customizable program variants and exercises
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Simply 5×5 — Barbell Strength Tracker The simplest, most effective way to run the StrongLift 5×5 program. Built for lifters who want to focus on the bar, not the app. Automatic Progression Weights go up every session when you succeed. Three failures trigger an automatic deload — no thinking required. AI Session Briefing After every workout, get a personalized one-paragraph analysis from an AI coach. Trend analysis, fatigue detection, and a concrete tip to reach your next strength tier. Warm-up & Plate Calculator Tap any exercise to instantly see your warm-up sets and exactly which plates go on the bar — each side, every set. Strength Ranking See where you stand — Beginner, Novice, Intermediate, Advanced, or Elite — for each lift and your Big Three Total, calibrated to your bodyweight. Progress Tracking Weight progression charts, personal records, estimated 1RMs, weekly and monthly volume stats. Workout History Calendar view of every session. Tap any day to review set-by-set results. Delete a log and progression automatically recalculates. Fully Customizable - 5×5 or 3×5 program variant - Custom accessory exercises for Workout A and B - Adjustable rest timers (main set & final set) - kg / lbs support - Weekly workout reminders - Apple Health integration - CSV data export
FlexLft
Create and track custom weight training programs with this app. It offers smart progression suggestions, a built-in rest timer, and syncs with Apple Health. Your data stays private and on your device.
- Custom program builder
- Smart weight progression
- Built-in rest timer
- Apple Health integration
- Workout history tracking
- Offline functionality
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Transform your strength training with FlexLift - the simple yet powerful app for creating and tracking custom weight training programs. Perfect for Intermediate Lifters Whether you're following 5/3/1, StrongLifts, or your own custom program, FlexLift gives you the flexibility to build exactly what you need. No more being locked into rigid, one-size-fits-all workout plans. Core Features • Custom Program Builder - Create unlimited workout programs with your preferred exercises, sets, reps, and weights • Smart Progression - Automatic weight suggestions based on your performance to keep you progressing • Built-in Rest Timer - Stay focused with customizable rest periods between sets • Apple Health Integration - All your workouts automatically sync to Apple Health • Workout History - Track your progress and see how you've improved over time • Offline First - No internet required - your data stays on your device How It Works 1. Create your custom program with exercises, sets, reps, and starting weights 2. Start your workout and log each set as you complete it 3. Progress with smart weight suggestions for your next workout 4. Track your improvement over time with detailed workout history What Makes FlexLift Different • Truly Customizable - Build any program structure you want (A/B splits, full body, push/pull/legs, etc.) • Simple Interface - Clean, distraction-free design focused on getting your workout done • Smart Progression - Intelligent weight suggestions help you progress safely and effectively • Apple Health Ready - Seamless integration with your existing health ecosystem Perfect For • Intermediate lifters (6+ months experience) who want more flexibility • Anyone tired of being locked into rigid program structures • Lifters who want to track progression across custom programs • Users who prefer simple, focused workout apps Privacy First Your workout data stays on your device. We don't collect personal information or track your usage. Only sync to Apple Health with your explicit permission. Requirements • iOS 15.0 or later • iPhone (portrait mode optimized) • Apple Health integration (optional) Ready to take control of your strength training? Download FlexLift and build the program that works for you.
Screenshots
Verdict
The clearest difference is rating: FlexLft at 5.0 against Simply5x5's 4.2. FlexLft also leads on review sentiment (100% vs 67%). Simply5x5's advantage is update cadence (every 3 weeks vs every 2 months). On price, ratings volume, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
FlexLft holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews point the same way: 67% of Simply5x5's written reviews are positive against 100% of FlexLft's.
Simply5x5 ships an update every 3 weeks, FlexLft every 2 months. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.
| Parameter | Simply5x5 | FlexLft |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (5 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 5 — better | 2 |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone |
| Requires iOS | 18.6 | 17.6 — better |
| Further details — not scored | ||
| Size | 5 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | VOID (KR) | Joshua Colvin |
Customer experience
Simply5x5
FlexLft
In-app purchases
Simply5x5
No in-app purchases
FlexLft
No in-app purchases









