Comparison

Zones for Training vs Simple Insights

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

Head to head
About

Zones for Training

This app helps you optimize your workouts by monitoring exercise intensity and visualizing it through heart rate zones. It supports over 70 workout types and provides detailed insights into your performance, all accessible on your Apple Watch and iPhone.

Highlights
  • Real-time exercise intensity and heart rate monitoring
  • Time spent in four heart rate zones
  • Total workout dashboard from Apple Health
  • Heart rate zone alerts via Apple Watch taps
  • Recovery heart rate measurement
  • Detailed workout data and insights
  • Widget support for workout summaries
Features
Read full description

Get the most out of your Apple Watch! Zones monitors your exercise intensity and visualize it in meaningful ways. Know your activities and be smart about how you work out. Zones supports over 70 types of workouts like Running, Walking, Cycling, Treadmill, Exercise Bike, and Strength Training. Great for outdoor/indoor/gym workouts. Measure it on your Apple Watch, review it on your iPhone. Efficient workouts with Zones! ------------------------------------------------ ■ Features ------------------------------------------------ ◎ Monitor real-time exercise intensity and heart rate during workouts. (Apple Watch only) ◎ Show your time spent in the four Heart Rate Zones. ◎ Display all workouts data from the Apple Health app, so that you can use Zones as a total workouts dashboard. ------------------------------------------------ ■ Training With Heart Rate Zones ------------------------------------------------ Everybody has a different purpose for their training. Someone run for diet, someone ride for improving their cardio endurance. Exercising at the correct intensity can help you get the most out of your workouts. This app shows you your exercise intensity using your real-time heart rate, and it has four heart rate zones to understand your exercise intensity at a glance. • PEAK - for improving performance and speed. • CARDIO - for improving cardio endurance. • FAT BURN - For longer exercise. Predominantly uses fat for energy. • WARM UP - For preparation and recovery. With these four zones, you can start heart rate training very easily and quickly. You don't have to remember your target heart rate or intensity %. ------------------------------------------------ ■ Measuring with Apple Watch ------------------------------------------------ ◎ Heart Rate and Exercise Intensity in real-time • You can easily see which Heart Rate Zone you are in while exercise. • Your Apple Watch taps you on the wrist when heart rate zone changes. • Automatic pause/resume function (Running only) ◎ Review your improvements with Recovery Heart Rate Recovery Heart Rate is the difference between your exercising heart rate and your heart rate one minutes after the exercise has stopped. It is a good indicator to gauge your fitness level! This app measures it automatically right after your workouts. (Over CARDIO intensities only) ◎ Leave your iPhone at home You can leave your iPhone at home when you go for training! ※ Measurement function is only available on the Apple Watch. ------------------------------------------------ ■ Detailed Information of Your Workouts ------------------------------------------------ ◎ Details of Workout • Duration • Active Calories • Distance, Pace, Splits • Time in heart rate zones • Heart Rate and Exercise Intensity (Average, min/max heart rate) • Graphs of heart rate and pace • Show your workout on Widgets ◎ Insights (Graphs & Lists) • Recent Workouts • Weekly Calories Burned • Top 10 Distance • Running Pace ------------------------------------------------ ■ Many Ways to Use Zones ------------------------------------------------ ◎ Supports over 70 types of workouts Running, Walking, Cycling, Core Training, Flexibility, Strength Training... and so on! ◎ Works great with other apps through the Apple Health Zones reads all Workouts data from the Apple Health app, so you can use Zones as a total workouts dashboard. In this way, you can continue using the apps you already love. Of course, you can see your workouts data from Apple Workouts app in Zones. ◎ Upgrade to PRO • Stats (Weekly, Monthly, Yearly) • Create & customize Insights • Change Heart Rate Zones • Create Custom Workouts (5 Zones) • Edit Workout Name ------------------------------------------------ ■ Required Device ------------------------------------------------ Apple Health is required to use. For iPad, please update your OS to iPadOS 17 or higher.

About

Simple Insights

This app transforms your health and workout data into actionable coaching insights using on-device processing. It provides trend alerts, weekly reports, daily recommendations, and AI-powered answers to your health-related questions.

Highlights
  • AI-powered health coaching
  • Trend anomaly alerts
  • Weekly intelligence reports
  • Daily morning briefings
  • Natural language AI queries
  • Apple Health integration
  • On-device processing
Features
Read full description

Train with clarity, not guesswork. Simple Insights uses Apple Health and Apple Intelligence to turn your health and workout data into clear coaching answers for recovery, training, movement, and performance — processed on device, no cloud required. Start with a 7-day free trial with full access. No account. No cloud processing. No data selling. Ever. NEW: Coach-Ready Workout Details Open any workout and read a plain sentence about it — “A hard 45-minute ride — one of your bigger workloads in the last 14 days” — before a single number. Then the figures a coach would ask for: • Training Load (TSS) and Intensity Factor, on every activity type • Zone 4+ efforts, longest effort, and dominant zone • Elapsed, active, and paused time • Heart rate drift, time to peak, average as a percentage of max • A comparison against your own recent sessions, not a population average Tap any figure for a plain-language explainer. Share the session as an image, or export the heart rate data as a spreadsheet. The last 7 days are free; subscribers get full history, sharing, and export. Ask AI (Powered by Apple Intelligence) Ask natural-language questions about your health and performance, answered from your own Apple Health trends, on device. • “How much did I train this week vs last week?” • “Show my HRV trend over the last 30 days.” • “Tell me about Morning Briefing.” • “Is my data private in Simple Insights?” Subscribers get unlimited prompts. Free mode includes 2 per day. Ask AI requires an Apple Intelligence compatible iPhone. Heart Rate Data Export Your workout data belongs to you. Export any workout’s heart rate readings to a CSV spreadsheet for Numbers, Excel, or Google Sheets — every reading in order, with elapsed time, zone, and percentage of max. Built on device, nothing uploaded. Morning Briefing Start each day with a proactive recommendation — Push, Steady, or Recover — plus a confidence score and the key drivers behind it. Tap through for how each number was calculated. Trend Anomaly Alerts Simple Insights watches your trends for you. When resting heart rate spikes, HRV drops, sleep declines, or activity falls off, you get a clear alert before you feel the impact. Workout streaks and new personal bests are flagged too. Every alert says what changed, why it matters, and what to do — then clears itself when the trend recovers. Weekly Intelligence Report A weekly report that answers one question: “Am I improving?” • Training, Recovery, Movement, and Sleep sections • Confidence-aware interpretation • Driver lines and practical next actions • Shareable PDF export for coach check-ins Built for Apple Health users Works with what you already track — Apple Watch, compatible heart rate monitors and exercise machines, and other Apple Health sources. No manual syncing. Recovery Intelligence • HRV trends • Resting heart rate patterns • High and low heart rate monitoring • Recovery behavior over time Training Intelligence • Per-session Training Load (TSS) and Intensity Factor • Heart rate zone distribution, Zone 4+ efforts, and drift • Weekly and monthly training comparisons • Workout trend summaries Movement Intelligence • Steps and movement trends • Active calorie patterns • Weekly and monthly consistency signals Intelligent Dashboards • My Dashboard and Coach Dashboard • Modular tile layouts you can reorder and personalize Privacy First by Design • On-device processing • Your data is exportable as a spreadsheet • No logins, no accounts • No ads • No cloud processing • No tracking Exports, dashboards, weekly reports, and detailed alerts are subscriber features. Free mode remains fully usable. Subscription Information Auto-renewing monthly and annual subscriptions. Pricing varies by region. Renews unless canceled in App Store settings. Privacy Policy: https://simplespinapp.com/privacy-policy Terms of Use: https://simplespinapp.com/eula If you train with intention, analyze with intention.

Screenshots

Zones for Training4 screens
Simple Insights4 screens

Verdict

The call

The clearest difference is update cadence: Simple Insights at every 2 days against Zones for Training's every 4 weeks. Zones for Training's advantage is ratings volume (19K vs 5) and iOS requirement (17.6 vs 26.0). On price, rating, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Zones for Training sells 1 one-off in-app purchase and Simple Insights sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Zones for Training against 4.8 for Simple Insights. That said, the two scores are not equally well evidenced: Zones for Training has 19K ratings behind it against 5, so its average is the more settled of the two.

UpkeepUpdate frequency

Zones for Training ships an update every 4 weeks, Simple Insights every 2 days. The most recent releases landed on September 24, 2026 and September 16, 2026 respectively.

Scorecard3 real differences · 7 level
Zones for Training versus Simple Insights: the parameters behind the verdict, then further details
ParameterZones for TrainingSimple Insights
PriceFreeFree
Rating4.8 (19K ratings)4.8 (5 ratings)
Positive reviews69.1% of reviews
Number of ratings19K — better5
Update frequencyEvery 4 weeksEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS17.6 — better26.0
Further details — not scored
Size40 MB56 MB
Age rating4+4+
DeveloperFlask LLPSV Disrupt LLC

Customer experience

Zones for Training

All ratings19,129 ratings
Positive95.4%
Neutral2.1%
Negative2.4%
Written reviews858 reviews
Positive69.1%
Neutral8.3%
Negative22.6%

Simple Insights

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Zones for Training

Reported bugs

5 issues
  • Heart rate not recording properly
  • Workout data not syncing correctly
  • Workouts pausing unexpectedly
  • Inability to delete or edit past workouts
  • Inconsistent calorie/distance tracking

Requested features

9 requests
  • Ability to edit past workouts
  • Option to customize moderate and vigorous intensity zones
  • Widgets for active score and zone time
  • Ability to set zone-specific goals
  • Option to disable zone change vibrations
Show 4 more
  • Dashboard on phone app while tracking on watch
  • Support for Heart Rate Reserve (HRR) zones
  • Large widget for monthly/yearly stats
  • Voice activation for zone changes

Simple Insights

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Zones for Training

One-time1
  • PRO$7.99
4 purchases

Simple Insights

Subscriptions4
  • Simple Insights Monthly$2.991 Month
  • Simple Insights Premium Monthly$4.991 Month
  • Simple Insights Annual$29.991 Year
Show 1 more
  • Simple Insights Premium Annual$39.991 Year

Questions

Is Zones for Training free?
Zones for Training is free to download, with in-app purchases available.
Is Simple Insights free?
Simple Insights is free to download, with in-app purchases available.
Which has better reviews, Zones for Training or Simple Insights?
Zones for Training and Simple Insights are both rated 4.8 out of 5 on the App Store, from 19K and 5 ratings respectively.
Do Zones for Training or Simple Insights have ads?
Neither Zones for Training nor Simple Insights shows ads.
Which is updated more often, Zones for Training or Simple Insights?
Zones for Training ships an update every 4 weeks, and Simple Insights every 2 days. Most recently, Zones for Training was updated on September 24, 2026 and Simple Insights on September 16, 2026.

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