Flex Log vs SLAB
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Flex Log
Read full descriptionHide full description
Welcome to Flex Log, the app for anyone who's ever thought, "If only I could track my productivity hacks... with another productivity hack." It's like your standard health and productivity app, but without the rigid frameworks and one-size-fits-all approach. It's adaptable to fit the way you track. Why Flex Log? Because who doesn't love tracking their life with an app? Flex Log brings a bit of order to your chaotic world, with the added bonus of making you feel like a productivity guru. It's the app for people who love data, but also value simplicity and ease of use in their everyday life. For the Aspiring Life Optimizers: You're the kind of person who tries to squeeze productivity out of every second (while listening to podcasts you swear you'll apply to your life someday). Flex Log is here to help you track, well, whatever you think is worth tracking. No judgments here! Customize Without the Complexity: Our app is more adaptable than your yoga instructor. Want to track your caffeine intake or the number of times you actually remember to water your plants? Flex Log has got your back. Built with the power-user in mind, so you can dive deep into customization, creating a setup that's as complex and unique as your goals. Join Our Band of Happy Trackers: Download Flex Log and become part of a community that loves to optimize their lives, but also knows how to laugh at the little absurdities. Remember, life's a journey โ might as well have an app that makes the ride more interesting. Flex Log: Your Life, Tracked Your Way (With a Smile). Features: - Quick data entry - Task tracking - User defined activities with custom icons - Point in time as well as time range tracking - Custom fields so you can track anything in a structured format - Data never leaves your phone - Customized views Coming soon: - Recurring tasks based on calendar or last completion date - Reminder notifications - Voice entry with siri and google assistant - Data sync to notion or google sheets - Goals and charts. Visualize what's most important.
SLAB
Read full descriptionHide full description
SLAB is a voice-first workout tracker and food logger, built for lifters who hate fumbling with their phone mid-set and calorie counters who don't want the friction. Speak naturally. Say "225 for 5, felt heavy" or "200 grams of chicken breast" and SLAB logs it. No tiny buttons. No number pickers. No friction. HOW IT WORKS - Talk to SLAB like a training partner - It parses your voice into structured data - It tracks your calories, workouts, goals, PBs and previous weights, times, and durations - One tap to talk, then back to lifting BUILT FOR THE GYM Your hands are chalked. You're wearing wrist wraps. You're between sets and your rest timer is running. You don't want to tap through forms and scroll number pickers. SLAB lets you log with your voice and get back to work. TRACKS WHAT MATTERS SLAB remembers your personal bests and what you lifted last time. See your progress without digging through spreadsheets. ZERO FLUFF Dark mode only. No gamification. No confetti. No cartoon mascots. Just your lifts, your stats, your progress. SLAB Pro unlocks unlimited voice logging and full training history. Privacy Policy: https://getslab.app/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Flex Log at none against SLAB's 2. Flex Log also leads on update cadence (every 5 days vs fortnightly) and iOS requirement (12.4 vs 15.1). On price, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. SLAB sells 2 in-app purchases, starting at $6.99 per month. Flex Log asks for nothing beyond the download.
Flex Log ships an update every 5 days, SLAB fortnightly. The most recent releases landed on September 15, 2026 and September 14, 2026 respectively.
| Parameter | Flex Log | SLAB |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days โ better | Fortnightly |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.4 โ better | 15.1 |
| Further details โ not scored | ||
| Size | 18 MB | 54 MB |
| Age rating | 17+ | 4+ |
| Developer | Aaron Larner | Andrew Lower |
In-app purchases
Flex Log
No in-app purchases
SLAB
- SLAB Pro - Monthly7 Days trial$6.991 Month
- SLAB Pro - Yearly7 Days trial$49.991 Year









