Comparison

Treadmill Assistant vs chrtz

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

Head to head
About

Treadmill Assistant

Features
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Your treadmill, but smarter. Connect via Bluetooth, control speed and incline from your phone, and see every workout as a chart — all for free, no account required. No ads, no videos, no gimmicks — just you and your workout. Go further with Premium: custom programs, heart rate zones, Live Activity, Apple Health sync, and more. CONNECT & CONTROL • Instant Bluetooth pairing — remembers your treadmill for next time • Adjust speed and incline directly from your phone • Export and import workouts and programs — share or back up your data SUPPORTED TREADMILLS • Built for FitShow. • FTMS-compatible treadmills are supported, but FTMS implementations vary by manufacturer. Some allow full control (speed, incline, start, stop) and rich data; some allow data only, with no control over the belt; some restrict third-party apps almost entirely. FTMS itself doesn't relay every metric — steps, for example, aren't part of it. We can't guarantee every FTMS treadmill will work — support depends entirely on what the manufacturer permits over Bluetooth. • Live compatibility list before you buy: https://treadmill-assistant.com/docs/compatibility/ • Treadmill not on the list? Get in touch via email or Discord (links on https://treadmill-assistant.com) for guidance on adding support, where possible. TRACK EVERY WORKOUT • Real-time stats: speed, distance, time, calories, steps, heart rate • Workout charts — see your heart rate, speed, and incline across the whole run, with touch scrubbing in landscape • Automatic workout recording and history • Heart rate monitoring from treadmill grip sensors • Static incline for flat treadmills and walking pads • Metric and imperial units — incl. body weight & height LANGUAGES • English • French • Polish • German (machine-translated) • Spanish (machine-translated) PREMIUM — 14-DAY FREE TRIAL Take your workouts further. Try everything free for two weeks. CUSTOM PROGRAMS • Build multi-segment workouts with speed and incline per phase • Segments by duration or distance — your choice • Automatic transitions — the treadmill adjusts for you • Pause and resume mid-workout without losing progress AD-HOC TARGETS • Set a distance, time, or calorie goal and go • Auto-stop when you hit your target LIVE ACTIVITY & DYNAMIC ISLAND • Track your workout from the lock screen • Real-time speed, distance, and time in the Dynamic Island HEART RATE ZONES • Connect any Bluetooth heart rate monitor (chest strap, armband) • See your current zone in real time during workouts • Review time spent in each zone in your workout summary • 5 zones from Recovery to Maximum, calculated from your age APPLE HEALTH & iCLOUD • Auto-sync workouts to Apple Health • Back up everything to iCloud — workouts, programs, settings EQUIPMENT TRACKING • Track belt lubrication, belt replacement, and shoe mileage • Warnings when maintenance is due COMPANION TOOLS • Web program editor — build, edit, and share programs in your browser, no account required: https://treadmill-assistant.com/editor.html PRIVACY FIRST Your data stays on your device. No accounts, no analytics, no ads. Optional iCloud sync uses your personal iCloud storage — we never see your data. DEVICE SUPPORT • Optimized for iPhone • iPad supported REQUIREMENTS • FitShow or FTMS-compatible treadmill • iPhone or iPad with Bluetooth • iOS/iPadOS 15.0 or later SUBSCRIPTION TERMS Payment is charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless turned off at least 24 hours before the end of the current period. Manage and cancel subscriptions in your Apple ID account settings. Terms of Use: https://treadmill-assistant.com/terms.html Privacy Policy: https://treadmill-assistant.com/privacy.html This app is not affiliated with or endorsed by any treadmill brand or manufacturer. Treadmill control is off by default — enable it in settings. Always stop immediately if something seems wrong. Questions or feedback? We'd love to hear from you!

About

chrtz

Features
Read full description

A step‑based character ranking app with heatmap visibility and group competition. chrtz turns your steps into rank. Pick your favorite character, compete in solo or group rankings, and climb the leaderboard. Top spots unlock visibility perks—like message highlights and a larger presence on the heatmap. Track progress with Live Activity, earn rewards, and customize your character’s look with avatars and backgrounds. Every step counts, and every rank change is real. Highlights Step‑based solo & group rankings Top‑rank visibility perks (message highlight, heatmap presence) Live Activity for quick progress checks Character customization (avatars & backgrounds) Events and rewards tied to activity

Screenshots

Treadmill Assistant4 screens
chrtz3 screens

Verdict

The call

The clearest difference is in-app purchases: chrtz at none against Treadmill Assistant's 2. chrtz also leads on update cadence (weekly vs every 3 weeks). Treadmill Assistant's advantage is device support (4 vs 2). On price, ads and iOS requirement 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. Treadmill Assistant sells 2 in-app purchases, starting at $2.49 per month. chrtz asks for nothing beyond the download.

UpkeepUpdate frequency

Treadmill Assistant ships an update every 3 weeks, chrtz weekly. The most recent releases landed on October 15, 2026 and September 30, 2026 respectively.

Scorecard3 real differences · 3 level
Treadmill Assistant versus chrtz: the parameters behind the verdict, then further details
ParameterTreadmill Assistantchrtz
PriceFreeFree
Update frequencyEvery 3 weeksWeekly — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.0 — better16.2
Further details — not scored
Size40 MB59 MB
Age rating17+4+
DeveloperKolto Tech Piotr KoszurSungsu Choi

In-app purchases

2 purchases

Treadmill Assistant

Subscriptions2
  • Premium Monthly14 Days trial$2.491 Month
  • Premium Yearly14 Days trial$14.991 Year
None

chrtz

No in-app purchases

Questions

Is Treadmill Assistant free?
Treadmill Assistant is free to download, with in-app purchases available.
Is chrtz free?
chrtz is free to download, with no in-app purchases.
Do Treadmill Assistant or chrtz have ads?
Neither Treadmill Assistant nor chrtz shows ads.
Which is updated more often, Treadmill Assistant or chrtz?
Treadmill Assistant ships an update every 3 weeks, and chrtz weekly. Most recently, Treadmill Assistant was updated on October 15, 2026 and chrtz on September 30, 2026.

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