TreadSpan vs Mark
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TreadSpan
This app simplifies tracking steps for treadmill desk users, automatically logging activity without manual session input. It provides detailed step metrics and syncs with Apple Health for organized fitness data.
- Automatic treadmill session logging
- Distinguishes treadmill steps from other activity
- Syncs with Apple Health
- Open source with Github code available
- Supports treadmills with app capabilities
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Treadmill desk users have different needs than treadmill users. Treadspan was built for the walking pad use case. Someone that wants to track their steps throughout the day without being a slave to an app to log each session. This app coupled with a $17 chip, you can buy off Amazon - your treadmill sessions will be automatically stored in memory and ready for sync whenever you choose—no need to log each session individually. This means you can focus on your work instead of logging each workout. Treadspan also provides detailed step metrics, distinguishing between treadmill activity and other sources, and syncs directly with Apple Health to keep your fitness data organized. Supports most treadmills that have app capabilities. Take control of your treadmill tracking with Treadspan—sync when you want, not after every session! Treadspan is open source and full source code is available on Github. The hope is this project will gain traction and other people will add firmware for other treadmills overtime.
Mark
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Log workouts like Notes. Find what you lifted last time. Mark-1 is a workout journal for iPhone that keeps your sets, weights and training notes together. Write in your own shorthand or follow a saved routine. WRITE YOUR WORKOUT Type “bench press 185x8,8,7” to record three sets. Mark-1 recognizes supported exercise names, weights and reps and organizes them into your training history. Add a note about how a set felt without leaving your workout. REMEMBER YOUR LAST LIFT Look back at previous weights and reps. Explore exercise history, personal records and progress charts, so you have something concrete to refer to for your next session. FOLLOW A ROUTINE Create unlimited routines for free. Check off completed sets, adjust weights and reps, and reorder exercises to match your session. KEEP YOUR TRAINING TOGETHER Browse past workouts on the calendar. Correct an entry or add a workout you missed. Export your performed lift history as a CSV. MAKE IT YOURS Choose sage, rose or lavender, with light, dark and system modes. MARK-1 PREMIUM (OPTIONAL) Core logging, routines, history and charts stay free. Mark-1 Premium is an optional auto-renewable subscription ($4.99 per month in the US) that adds training plans built around your schedule and Insights on your lifts. Coaching is in a limited early rollout and is not included for new subscribers yet. Payment is charged to your Apple ID account at confirmation of purchase. The subscription renews automatically each month unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://mk1.energy/privacy Your workout, your words.
Screenshots
Verdict
The clearest difference is in-app purchases: TreadSpan at none against Mark's 1. Mark's advantage is update cadence (every 5 days vs monthly). On price, ads, device support 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
Both are free to download. Mark sells 1 in-app purchase, starting at $4.99 per month. TreadSpan asks for nothing beyond the download.
TreadSpan ships an update monthly, Mark every 5 days. The most recent releases landed on September 29, 2026 and September 30, 2026 respectively.
| Parameter | TreadSpan | Mark |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Monthly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Blake Robertson | Mark-1 Performance LLC |
In-app purchases
TreadSpan
No in-app purchases
Mark
- Mark-1 Premium$4.991 Month









