Comparison

ErgZone vs Lung Rot

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

Head to head
About

ErgZone

Optimize indoor training with real-time performance data, personalized pacing, and engaging challenges. Seamlessly integrates with various fitness machines, automating setup and providing critical metrics to enhance your workouts.

Highlights
  • Easy monitor setup
  • Live performance metrics
  • Smart interval pacing
  • Real-time workout alerts
  • Workout variety options
  • Performance history tracking
  • Community challenges
Features
Read full description

ErgZone is a cutting-edge fitness platform designed to optimize your indoor training sessions. By seamlessly integrating with your Concept2, RP3, Rogue, WaterRower, Assault Fitness or FTMS-enabled machines, ErgZone provides real-time performance data, personalized pacing, and engaging challenges to push your limits. Why Choose ErgZone? Designed to streamline your training, ErgZone minimizes setup time, automates monitor configurations, and calculates critical metrics so you can focus on performance, not prep. Key Features: • Easy Monitor Setup: No need to manually set intervals – simply connect to the ergometer, and the app handles the rest. Start moving right away. • Live Metrics: View real-time data during workouts, including time, distance, pace, strokes/minute (SPM), calories, watts, heart rate (HR) zones, and more. • Smart Interval Pacing: Suggested pace per interval based on personal benchmarks (1K, 2K, 5K for rowing and skiing; 2K, 4K, 10K for cycling). • Real-Time Alerts: Instant feedback if your pace, SPM, or split time drifts from the target. • Workout Variety: Options to train by time, distance, or calories with flexibility for mixed or weighted workouts. • Daily Workouts: Access the Concept2 Workout of the Day, plus discover workouts and training plans from top coaches. • Performance History: Save your favorite workouts, track heart rate progress, and monitor key metrics. • Compete & Connect: Join challenges, follow ErgFlix workouts, and interact with our partner coaches who release weekly free workouts. • Beyond Default Metrics: Track advanced metrics like stroke count, drag factor (DF), calories, watts, SPI, HR zones, and more. • Automatic Syncing: Results are automatically uploaded to the Concept2 LogBook. Unlock ErgZone+ for Premium Tools: • Enhanced Metrics & Graphs: View each interval's post-workout heart rate and power zones in a single graph. • Expanded Metrics: Access Drive Length, Max Power, Avg. Force, Force Curve, and more. The app remembers your last-used metrics for easy setup. • Time Cap & AMRAP: For added versatility, use automatic time-capped workouts and AMRAP (as many rounds as possible). • Flexible Targets: Set workout intensity using power metrics like FTP (Functional Threshold Power), SPI, or Watts percentage. • ReRow, ReSki, ReRide: Revisit previous sessions and strive to beat your pace or time. • Communities: Create and join communities, share workouts, and engage with friends. Enable leaderboards for a fun, competitive edge. • Apple Health Integration: Sync workouts and heart rate data directly to Apple Health. • Heart Rate Monitor: Connect your favorite Bluetooth HRM to track your heart rate in real-time during workouts. • Web Dashboard: Manage workouts, schedule training, and view live stats on a computer. • MultiErg Workouts: Create custom workouts incorporating two or all three Concept2 machines in a single workout. • Dynamic Interval Intensity: Set workout pace based on a previous interval. • Apple Watch Integration: Capture heart rate data from our Apple Watch app. • Organize Your Training: Create groups, libraries, and training plans to manage better and organize your workouts. • FIT Workouts: Track non-erg workouts such as weight training, HYROX, CrossFit, etc. Requirements: • Supported Machines: Concept2 RowErg, BikeErg, SkiErg with PM5, RP3 Rower, Rogue Echo Bike or Rower, WaterRower S4 (with ComModule or CR BLE), FTMS-enabled machines. • Device: iPhone or iPad Terms of Use: https://www.erg.zone/terms

About

Lung Rot

This app visualizes the impact of vaping on your lungs, showing decay with each puff and healing with clean stretches. It offers adaptive goals, detox sessions, and a money calculator to motivate users to quit.

Highlights
  • Visual 20-stage cartoon lung that rots and heals
  • Adaptive daily puff goal
  • Detox sessions with health rewards
  • Money calculator for vaping costs
  • Home screen widget for quick logging
  • Trigger and reason mapping
  • 100% local data storage
Features
Read full description

Stop vaping. Watch your lungs heal. The more you vape, the more your lungs rot. Puff Lung makes that real. Every puff drops your health. Every clean stretch starts bringing it back. It's not a streak counter or a calendar — it's a cartoon lung that visibly decays as you go over your goal, then heals when you commit to a detox. If you're tired of "you can do this!" apps that ignore what your habit is actually costing you, Puff Lung is built different. HOW IT WORKS — Set your baseline. Tell us where you are now. No judgment. — Pick your pace. Cut 1, 2, 3, or more puffs per day. Whatever you can keep. — Tap every puff. Stay under your goal and your lungs stay healthy. Go over and they start to rot. — Slip up? We adjust. Tomorrow's goal moves up to where you actually were, so it stays reachable. Then we keep working back down. — Detox to heal. Run a 15m, 30m, 1h, 2h, or 4h detox. Stay clean and your lungs gain health. Vape during detox and every puff counts double. FEATURES • 20-stage cartoon lung that visibly rots and heals in real time • Home screen widget — see your lung from your home screen at a glance • Detox sessions with health rewards (up to +20 health for 4 hours clean) • Adaptive daily goal that responds to your real usage instead of giving up on you • Money calculator — see what your habit costs per week, per year, and over your lifetime • What you could afford instead — based on your spending: a weekend in Cancun, 10 days in Japan, an African safari, 3 months backpacking Southeast Asia • Full history with daily lung-stage tracking • Trigger and reason mapping to keep your "why" in front of you • 100% local data — your puff log never leaves your phone PUFF LUNG UNLIMITED The core tracker is free. Puff Lung Unlimited unlocks: — Detox sessions with health rewards — Plus button on the home screen widget for one-tap logging — Full unlimited history — Custom reward selection Puff Lung Unlimited is available as a weekly or monthly auto-renewing subscription. Payment is charged to your Apple ID at confirmation of purchase. Subscriptions automatically renew unless auto-renewal is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours of the period end at the listed price. Manage or cancel subscriptions in your device's Settings → Apple ID → Subscriptions. If a free trial is offered, it converts to a paid subscription at the trial's end unless canceled. WHO IT'S FOR People who already know vaping is bad for them and want to actually do something about it. Built for the kind of person who can take a hit of reality alongside a hit of accountability. If your last quit attempt got eaten by another disposable, this is the tool that doesn't let you forget what's happening to your lungs. HEALTH DISCLAIMER Puff Lung is for self-tracking and motivational purposes only. The lung visualizations are stylized cartoons, not a clinical assessment of your physical health. We do not provide medical advice, diagnosis, or treatment. If you have any health condition, consult a qualified healthcare provider before changing your nicotine, tobacco, or vaping use. PRIVACY Everything you enter — counts, goals, history, triggers, reasons — stays on your phone. We don't run a server. We don't sell your data. We can't, because we don't have it. Privacy Policy: https://www.cardboardllc.net/privacy-policy Terms of Service: https://www.cardboardllc.net/terms-and-conditions Contact: dillon@cardboardllc.net

Screenshots

ErgZone4 screens
Lung Rot4 screens

Verdict

The call

The clearest difference is ratings volume: ErgZone at 458 against Lung Rot's 4. ErgZone also leads on device support (4 vs 1) and iOS requirement (13.4 vs 26.0). Lung Rot's advantage is update cadence (every 11 days vs every 2 months) and rating (5.0 vs 4.8). On price, ads, in-app purchases and monetization model 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. ErgZone sells 2 in-app purchases, starting at $4.99 per month and Lung Rot sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Lung Rot holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: ErgZone has 458 ratings behind it against 4, so its average is the more settled of the two.

UpkeepUpdate frequency

ErgZone ships an update every 2 months, Lung Rot every 11 days. The most recent releases landed on October 11, 2026 and October 8, 2026 respectively.

Scorecard5 real differences · 5 level
ErgZone versus Lung Rot: the parameters behind the verdict, then further details
ParameterErgZoneLung Rot
PriceFreeFree
Rating4.8 (458 ratings)5.0 (4 ratings) — better
Positive reviews81.6% of reviews—
Number of ratings458 — better4
Update frequencyEvery 2 monthsEvery 11 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone
Requires iOS13.4 — better26.0
Further details — not scored
Size33 MB18 MB
Age rating4+17+
DeveloperERGZONE LLCDillon McConnell

Customer experience

ErgZone

All ratings458 ratings
Positive95.4%
Neutral1.7%
Negative2.8%
Written reviews76 reviews
Positive81.6%
Neutral3.9%
Negative14.5%

Lung Rot

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

ErgZone

Reported bugs

9 issues
  • Heart monitor sync issues with Samsung Galaxy watch
  • Workouts not appearing in logbook when connected to ErgData
  • Inaccurate total time in uploads
  • Rest distance not included in Strava upload
  • Group membership premium features unclear
Show 4 more
  • Workouts not shown chronologically
  • Occasional hesitation to connect to PM5
  • Cannot figure out how to connect to PM5
  • Workout completion and upload to logbook could be more intuitive

Requested features

7 requests
  • Sync with Samsung Galaxy watch
  • Add a beep function for interval changes
  • Confirmation pop-up for unsaved workout changes
  • Require unique names for workouts
  • Apple Health integration
Show 2 more
  • Native Apple Health synchronization
  • Sharing with Apple Health

Lung Rot

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

ErgZone

Subscriptions2
  • EZ+ Monthly7 Days trial$4.991 Month
  • EZ+ Annual$49.991 Year
2 purchases

Lung Rot

Subscriptions2
  • Unlimited (1 Week)3 Days trial$4.997 Days
  • Unlimited (1 Month)3 Days trial$12.991 Month

Questions

Is ErgZone free?
ErgZone is free to download, with in-app purchases available.
Is Lung Rot free?
Lung Rot is free to download, with in-app purchases available.
Which has better reviews, ErgZone or Lung Rot?
Lung Rot is rated higher. ErgZone averages 4.8 out of 5 from 458 ratings, while Lung Rot averages 5.0 from 4 ratings.
Do ErgZone or Lung Rot have ads?
Neither ErgZone nor Lung Rot shows ads.
Which is updated more often, ErgZone or Lung Rot?
ErgZone ships an update every 2 months, and Lung Rot every 11 days. Most recently, ErgZone was updated on October 11, 2026 and Lung Rot on October 8, 2026.

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