Comparison

Slog vs Bend Habit Tracker

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

Head to head
About

Slog

Features
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Slog โ€” Zone 2 cardio you can glance at, not squint at. Just say "Hey Siri, Start Zone 2." A workout begins. Your wrist turns green when you're in Zone 2, blue when your heart rate is too low, red when it's too high. That's the entire app. No reading numbers mid-stride. HOW IT WORKS 1. Voice start. No tapping, no menus. Say "Hey Siri, Start Zone 2" from across the room. 2. Glance for color. Full-screen color tells you what to do โ€” speed up, slow down, or hold steady. No squinting at a heart-rate number while running. 3. End when you're done. Workouts save to Apple Health and count toward your Fitness rings. WHY ZONE 2 Zone 2 is sustained aerobic work at 60โ€“70 percent of your max heart rate โ€” what exercise physiologists call conversational pace. It's the foundation of cardiovascular fitness, supported by decades of research and recommended by the American Heart Association. The catch: it's hard to stay in Zone 2 without a tool. Most apps bury heart rate behind charts and zones 1 through 5. Slog shows you one thing โ€” are you in Zone 2 or not โ€” and gets out of the way. WHAT'S IN (THE WHOLE APP) โ€” Voice-activated workout via "Hey Siri, Start Zone 2" โ€” Full-screen color UI: green, blue, red, gray โ€” Heart rate displayed as a fallback number โ€” Elapsed time โ€” Auto-calculated Zone 2 from your age in Apple Health, or set manually โ€” Workouts saved to Apple Health and Apple Fitness rings โ€” Watch face complication for one-tap launch โ€” Haptic taps when you cross zone boundaries ON YOUR IPHONE Your phone is the treadmill console. During a watch workout, Slog on iPhone mirrors your heart rate live โ€” a big number, a full-screen color, and your elapsed time, readable from feet away. Afterwards, History shows every session with time in Zone 2 and your weekly minutes against the 150-minute aerobic target. Set your range once in Zones (age-based, or Karvonen if you know your resting heart rate) and sync it to your watch with one tap. WHAT'S NOT IN (INTENTIONALLY) No multi-zone display. No splits, no intervals, no audio cues, no Strava bridge, no chest-strap pairing. Saying no is the product. PRIVACY Heart rate stays on your device. There's no account, no servers, no analytics, no tracking. Slog reads from Apple HealthKit and writes your workouts back to it. That's it. PRICING Free.

About

Bend Habit Tracker

Features
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Most habit trackers punish you for being human. Miss one day and your 60-day streak is gone โ€” so you quit. Bend works differently. Streaks bend instead of breaking. Miss a day and your flame dims; come back and it brightens. Mark rest, sick, or travel days honestly. Earn freeze tokens that automatically protect your streak when life happens. Built on real behavioral science: research shows missing a single day doesn't hurt long-term habit formation โ€” quitting after the miss does. Bend is designed around coming back. TRACK YOUR WAY - Daily habits or weekly targets (like "3ร— per week") on the days you choose - 14 colors, per-habit reminders, quick notes on any day - A living flame shows each streak's state at a glance FORGIVING BY DESIGN - Streaks dim, they don't reset - Rest, sick, and travel days keep your flame alive - Freeze tokens earned every 7-day run โ€” spent automatically if you miss - A warm comeback flow when you lapse, never a guilt trip UNDERSTAND YOUR PROGRESS - Monthly heatmap calendar and completion stats - 16 short, science-backed articles on building habits โ€” plus curated books, podcasts, and research to go deeper PRIVATE BY DEFAULT - All data stays on your phone. No account. No tracking. Full export/import backup anytime. - Available in English, Spanish, French, and Portuguese FREE & PRO Free: 3 habits, core streaks, stats, and Learn articles. Bend Pro (subscription): unlimited habits, full history, 6 extra themes, a bigger freeze-token bank, and the full Learn library. Start tiny. Miss a day. Come back. That's how habits are actually built โ€” and Bend is the tracker that finally understands it. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://glass-fuel-47a.notion.site/Bend-Privacy-Policy-3c2b18d1941280748fd9c98d6c320f1c

Screenshots

Slog4 screens
Bend Habit Tracker4 screens

Verdict

The call

The clearest difference is in-app purchases: Slog at none against Bend Habit Tracker's 2. Bend Habit Tracker's advantage is iOS requirement (15.1 vs 26.4). 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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Bend Habit Tracker sells 2 in-app purchases, starting at $4.99 per month. Slog asks for nothing beyond the download.

Scorecard2 real differences ยท 3 level
Slog versus Bend Habit Tracker: the parameters behind the verdict, then further details
ParameterSlogBend Habit Tracker
PriceFreeFree
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, Apple WatchiPhone, iPod
Requires iOS26.415.1 โ€” better
Further details โ€” not scored
Size3 MB49 MB
Age rating4+4+
DeveloperWilliam CaiChad Weirich

In-app purchases

None

Slog

No in-app purchases

2 purchases

Bend Habit Tracker

Subscriptions2
  • Bend Pro$4.991 Month
  • Bend Pro (Annual)$29.991 Year

Questions

Is Slog free?
Slog is free to download, with no in-app purchases.
Is Bend Habit Tracker free?
Bend Habit Tracker is free to download, with in-app purchases available.
Do Slog or Bend Habit Tracker have ads?
Neither Slog nor Bend Habit Tracker shows ads.

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