TreadSpan vs RepLog
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.
RepLog
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RepLog — Voice-Powered Workout Log Stay in the zone. Log your training with your voice. RepLog is built for people who are serious about training — not about fiddling with their phone between sets. After each set, tap once, say what you did, and get back to the bar. RepLog's AI turns your words into a complete, structured workout entry in seconds. "Bench press, 80 kilograms, 8 reps, 3 sets." That's all it takes. FEATURES Voice Logging One tap, one sentence, done. Supports English and Traditional Chinese speech recognition — speak naturally, in whichever language feels right. AI Smart Parsing RepLog automatically pulls out exercise name, weight, reps, sets, and any notes you mention — including how the set felt. No formatting required. Workout Journal Your full training history, organized by day. Scroll back through past sessions and see exactly how far you've come. Progress Tracking Automatic PR detection, strength trend charts, bodyweight tracking, and training streaks — everything you need to see your progress at a glance. Rest Timer Log a set and RepLog keeps time for you, nudging you when it's time to go again. Daily Workout Suggestions Not sure what to train today? Based on your cycle, RepLog recommends Push, Pull, Legs, or Cardio to keep your programming on track. Manual Editing Prefer to make tweaks yourself? Add, edit, or update any entry at any time. WHY REPLOG Fully offline — your data never leaves your device No account needed — download and start training immediately Distraction-free design — built to keep your head in the workout Traditional Chinese support — tuned for Chinese-speaking athletes SUBSCRIPTION & PRICING RepLog is free to download. The free tier includes up to 5 voice logs per day. RepLog Pro unlocks unlimited voice logging: Monthly: NT$60 / month, auto-renewing Yearly: NT$490 / year, auto-renewing Lifetime: NT$1,290 one-time purchase Payment is charged to your Apple ID at confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscription anytime in your App Store account settings. LINKS Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://harrycodingnow.github.io/replog-websites/privacy.html Support: https://harrycodingnow.github.io/replog-websites/
Screenshots
Verdict
The clearest difference is in-app purchases: TreadSpan at none against RepLog's 3. TreadSpan also leads on iOS requirement (18.0 vs 26.2). RepLog's advantage is update cadence (every 2 days vs monthly). On price, ads and device support 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. RepLog sells 3 in-app purchases, starting at $1.99 per month. TreadSpan asks for nothing beyond the download.
TreadSpan ships an update monthly, RepLog every 2 days. The most recent releases landed on September 10, 2026 and August 13, 2026 respectively.
| Parameter | TreadSpan | RepLog |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Monthly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 — better | 26.2 |
| Further details — not scored | ||
| Size | 3 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Blake Robertson | Kai Teng Hou |
In-app purchases
TreadSpan
No in-app purchases
RepLog
- RepLog Monthly Plan$1.991 Month
- RepLog Annual Plan$14.991 Year
- Lifetime$39.99





