Comparison

SecondStrength vs KeyLifter

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

Head to head
About

SecondStrength

This fitness app is designed for women over 40 to build muscle, improve mobility, and support weight loss. It offers guided strength training and mobility routines tailored for perimenopause, menopause, and postmenopause stages.

Highlights
  • Guided strength training workouts
  • Menopause-friendly fitness plans
  • At-home and gym workout options
  • Core, glute, mobility, and full-body training
  • Beginner-friendly exercise guidance
  • Progressive plans to build strength
Features
Read full description

Second Strength is the fitness app built for women entering their strongest chapter. Designed for women in their 40s, 50s, 60s and beyond, Second Strength helps you build muscle, improve mobility, support weight loss, and feel confident in your body through simple, effective strength training. Whether you’re in perimenopause, menopause, postmenopause, or simply ready to get stronger, Second Strength gives you guided workout plans that fit your body, your goals, and your schedule. Inside the app, you’ll find strength workouts, mobility routines, core training, glute exercises, full-body plans, and progressive programs designed to help you move better, feel better, and build real strength over time. Second Strength helps you: Build lean muscle Improve strength and stability Support healthy weight loss Increase energy and confidence Improve mobility and flexibility Train safely at home or in the gym Stay consistent with structured plans Feel strong through menopause and beyond Our workouts are designed to be approachable but effective. No extreme routines. No confusing gym culture. Just clear, guided strength training created for women who want to feel capable, athletic, and powerful again. Second Strength includes exercises for your full body, including glutes, legs, core, arms, back, chest, and shoulders. You can follow structured workout plans, learn proper form, and progress at your own pace. This is not about “getting your old body back.” It’s about building your next one. Features include: Guided strength training workouts Programs for women 40+ Menopause-friendly fitness plans At-home and gym workout options Core, glute, mobility, and full-body training Beginner-friendly exercise guidance Progressive plans to build strength over time Workout library with clear exercise visuals Fitness routines designed for consistency Second Strength is ideal for women looking for strength training, menopause workouts, perimenopause fitness, postmenopause exercise, weight loss workouts, mobility training, home workouts, gym workouts, glute workouts, core workouts, and full-body fitness plans. Start building your second strength today. View our terms for any questions / concerns view our terms here: https://terms.a2apps.co/

About

KeyLifter

Features
Read full description

A PERSONAL TRAINER IN YOUR POCKET, GENERATED DAILY. A real trainer charges $60 to $100 an hour. A static workout app hands you the same eight-week block whether you slept four hours or eight, whether your shoulders are wrecked or fresh, whether your gym has a squat rack today or not. KeyLifter fixes both. Every day, it generates a new workout for you based on how the last session went, how recovered each muscle group is, what equipment your gym actually has, and where you are in your progression on every lift. Progressive overload happens without spreadsheets. Deloads happen when your body needs them, not when a static program says so. WHY THIS IS DIFFERENT FROM EVERY OTHER GYM APP • It writes the workout. You don't pick a template, you don't fill in sets and reps — you open the app and the day's session is there. • It adapts. Logged a brutal squat day yesterday? Today's leg work backs off. Felt fresh on bench? It pushes the next session harder. • It knows your gym. Save the equipment at every gym you train at. Traveling? Switch profiles and the day's program reworks in seconds. • It tracks recovery, not just volume. Per-muscle freshness scores tell you what's ready to train and what needs another day. INSIDE THE APP WORKOUT Today's session, written for you. Full-screen player with rest timers, RPE logging after each set, and progressive overload flags on every lift so you know exactly what to beat. RECOVERY A body map showing freshness scores for every muscle group. See at a glance what's recovered, what's still cooking, and why the AI programmed today the way it did. HISTORY Every session, every lift, every PR. Watch your bench, squat, deadlift, and accessory work trend up over weeks and months — not as a graph you have to interpret, but as a clear signal of what's working. PROFILE Your goal (strength, hypertrophy, body recomp, weight loss), your experience level, your current lifts, your gym equipment profiles. Change any of it and tomorrow's workout changes with you. WHO THIS IS FOR • Lifters tired of paying $200 to $1,000 a month for a coach to text them a Google Doc • People who've cycled through three apps and a dozen YouTube programs and still don't know what to do today • Travelers and multi-gym members who waste half a session figuring out substitutions • Beginners who need a real plan with real form cues — not a generic template • Advanced lifters who want periodization that actually responds to their recovery PRICING Free: one AI-generated workout per week, one equipment profile, basic progression tracking. Try the magic before you pay. Pro ($9.99/month or $79.99/year): daily AI workouts, unlimited gym profiles, recovery-aware programming, body-map targeting, supplement and nutrition tracking. Less than one session with a human trainer, for a month of programming that adapts every single day. Download KeyLifter, answer a few questions about your goal and your gym, and open tomorrow's workout. Legal Terms of Use: https://www.keylifter.com/terms Privacy Policy: https://www.keylifter.com/privacy

Screenshots

SecondStrength4 screens
KeyLifter4 screens

Verdict

The call

The clearest difference is update cadence: KeyLifter at daily against SecondStrength's every 10 days. On price, ads, in-app purchases 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. SecondStrength sells 2 in-app purchases, starting at $12.99 per month and KeyLifter sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

SecondStrength ships an update every 10 days, KeyLifter daily. The most recent releases landed on September 10, 2026 and September 19, 2026 respectively.

Scorecard1 real difference · 9 level
SecondStrength versus KeyLifter: the parameters behind the verdict, then further details
ParameterSecondStrengthKeyLifter
PriceFreeFree
Rating4.2 (11 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings11 — better—
Update frequencyEvery 10 daysDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPod — betteriPhone
Requires iOS15.1 — better16.4
Further details — not scored
Size82 MB65 MB
Age rating4+4+
DeveloperA2 Apps IncKeyInventions LLC

In-app purchases

2 purchases

SecondStrength

Subscriptions2
  • Monthly Pro3 Days trial$12.991 Month
  • Annual Pro3 Days trial$79.991 Year
2 purchases

KeyLifter

Subscriptions2
  • Pro Monthly7 Days trial$6.991 Month
  • Pro Yearly7 Days trial$39.991 Year

Questions

Is SecondStrength free?
SecondStrength is free to download, with in-app purchases available.
Is KeyLifter free?
KeyLifter is free to download, with in-app purchases available.
Do SecondStrength or KeyLifter have ads?
Neither SecondStrength nor KeyLifter shows ads.
Which is updated more often, SecondStrength or KeyLifter?
SecondStrength ships an update every 10 days, and KeyLifter daily. Most recently, SecondStrength was updated on September 10, 2026 and KeyLifter on September 19, 2026.

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