StrengthLog vs VoiceDiary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
StrengthLog
This app helps users plan and track their strength training progress with a vast exercise library and detailed analytics. It offers features for both beginners and experienced lifters, including social challenges and custom routine building. A generous free version is available, with an optional premium subscription for advanced tools.
- Unlimited workout logging
- 600+ exercises with videos
- Custom routine building
- Progress tracking and analytics
- Social challenges with friends
- Rest timer and plate calculator
- Body measurement tracking
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THE WORLD’S MOST GENEROUS WORKOUT TRACKER StrengthLog is the workout tracker for people who take their training seriously, whether you’re just getting started or have been lifting for decades. Plan your training. Log every set. Track your progress. Follow proven training programs or build your own. Compare your strength with other lifters. Set goals, build streaks, and challenge your friends. And unlike many workout apps, StrengthLog gives you everything you need to train effectively for free. Unlimited workout logging. No ads. No trial that suddenly locks you out. 100% gains, 0% ads. BUILT FOR LIFTERS, BY LIFTERS StrengthLog has been developed together with hundreds of thousands of lifters, from beginners to competitive strength athletes. Our library contains 600+ strength, cardio, and mobility exercises with instructions and videos. You can also create your own exercises. Log as you train or plan ahead with our calendar. Follow a ready-made training program, build your own, or simply decide what to do when you get to the gym. Your training history, PRs, statistics, and Strength Levels make it easy to see where you’ve been and where you’re going. TRAIN TOGETHER Connect with friends and make your training a little more social. See when your friends train, celebrate their progress, compare PRs and Strength Levels, and create or join challenges together. Challenge each other to train more often, do more reps, or reach whatever ridiculous goal you can come up with. You choose who you connect with, and your full training log stays private. FREE FEATURES • Log unlimited workouts, forever. • Support for both kg and lbs. • 600+ exercises with instructions and videos. • Create unlimited custom exercises. • Follow popular workouts and training programs. • Build your own routines and programs with linear progression. • Plan workouts and programs in your training calendar. • Track PRs and exercise history. • Compare your strength with other lifters using Strength Levels. • Track training volume, workouts, and other statistics. • Create training goals and streaks. • Complete our monthly challenges. • Connect with friends and challenge each other. • Use our rest timer and plate calculator. • Estimate your 1RM and get suggested PR warm-ups. • Track body measurements and progress pictures. • Connect with Apple Health. GO PREMIUM StrengthLog Premium unlocks our most advanced tools while supporting the continued development of the app. Premium includes: • Build unlimited training routines and programs with double and triple progression. • Our complete library of training programs for strength, bodybuilding, powerlifting, powerbuilding, sports, and more. • Advanced statistics for your training, muscle groups, and exercises. • Muscle heat maps showing what you’ve trained over any period. • Customizable favorite graphs. • Advanced logging with RPE, Reps in Reserve, % of 1RM, and quick set stats. • More tools for analyzing and planning your training. • Unlimited goals and streaks. • Connect your account to ChatGPT or Claude using our MCP integration. Whether you want a simple workout log or enough training data to disappear down a statistical rabbit hole for an entire evening, StrengthLog has you covered. Have an idea, found a bug, or just want to tell us what you think? Contact us at app@strengthlog.com. SUBSCRIPTIONS StrengthLog Premium is an automatically renewing subscription. • Choose between 1, 3, and 12 months. • Your App Store account will be charged upon purchase and your subscription will renew automatically unless canceled at least 24 hours before the end of the current period. • You can manage or turn off auto-renewal in your App Store account settings. APPLE HEALTH With your permission, StrengthLog can read relevant data from Apple Health and share your completed workouts with it. You control what data StrengthLog can read or write through your Apple Health permissions.
VoiceDiary
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Your voice becomes a moment of self-care. VoiceDiary is a voice journaling app that gently visualizes your mood, stress, and energy—just by recording your voice each day. It reads the tone of your voice, not the words you say, to quietly track how you're really doing. ■ Who it's for - You often feel tired but can't quite pin down why - You want an objective view of your mood and stress patterns - You're looking for a simple self-care habit that's easy to keep up - You'd like to see how sleep and physical condition connect to your mood ■ Key features - Record how you feel with your voice: just speak for about 30 seconds—no writing required - Daily scores and history: see your mood, stress, and energy as clear numbers and graphs - Meet Shizuku: a little droplet character whose expression shifts to reflect your state - Your personal baseline: VoiceDiary learns your "normal" over the first few days and gently measures changes against you—not anyone else ■ With Premium - Look back on your trends with weekly and monthly reports - Get a fuller picture by combining your emotions with sleep and vitals (Apple Health integration) - Stay ahead of tough days with stress prediction and correlation insights - Talk things through with an AI coach (text and voice) and feel a little lighter - Revisit your year with the Emotion Almanac (annual diary) ■ Your privacy comes first Your recordings are used only to understand your own emotional patterns and are never shared with third parties. You can delete your recordings and data from within the app at any time. VoiceDiary is not a medical device and is not intended for diagnosis or treatment. If you experience ongoing difficulties with your physical or mental health, please consult a professional. 【Subscription details】 - Premium (Monthly) - Premium (Yearly): save about 17% compared to monthly The free plan always lets you record with your voice and check your daily scores. Payment will be charged to your Apple Account at confirmation of purchase. Your subscription automatically renews at the same price unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage or cancel your subscription anytime in Subscriptions under your Apple Account in the Settings app. Privacy Policy: https://api.voicelog.org/legal/privacy Terms of Use: https://api.voicelog.org/legal/terms
Screenshots
Verdict
The clearest difference is device support: StrengthLog at 4 against VoiceDiary's 2. VoiceDiary's advantage is iOS requirement (13.4 vs 15.0). 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
Both are free to download. StrengthLog sells 3 in-app purchases, starting at $16.90 per month and VoiceDiary sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
StrengthLog ships an update weekly, VoiceDiary every 9 days. Both last shipped on November 10, 2026.
| Parameter | StrengthLog | VoiceDiary |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (3.7K ratings) — better | — |
| Positive reviews | 88.1% of reviews | — |
| Number of ratings | 3.7K — better | — |
| Update frequency | Weekly — better | Every 9 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPod |
| Requires iOS | 15.0 | 13.4 — better |
| Further details — not scored | ||
| Size | 158 MB | 22 MB |
| Age rating | 12+ | 4+ |
| Developer | Styrkelabbet AB | Kazuhiro Araki |
Bugs and requests
StrengthLog
Reported bugs
3 issues- Disappearing workout data
- Inability to clear/reset workout history
- Inconsistent behavior when planning workouts for the same day
Requested features
4 requests- Ability to save and edit custom workout plans
- Seamless integration with Apple Health
- Community features like challenges and leaderboards
- More personalized workout recommendations
VoiceDiary
Not enough reviews yet to summarise bugs or requests.
In-app purchases
StrengthLog
- StrengthLog Premium - 1 month14 Days trial$16.901 Month
- StrengthLog Premium - 3 months14 Days trial$37.903 Months
- StrengthLog Premium - 1 year14 Days trial$109.001 Year
VoiceDiary
- プレミアム(月額)14 Days trial$1.991 Month
- プレミアム(年額)14 Days trial$19.991 Year
Questions
Is StrengthLog free?
Is VoiceDiary free?
Do StrengthLog or VoiceDiary have ads?
Which is updated more often, StrengthLog or VoiceDiary?
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