Comparison

RepOne Personal vs RPE 8 (slowdown tracker)

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

Head to head
About

RepOne Personal

This app provides real-time velocity feedback for training when connected to a specific motion tracker. It captures detailed workout data, allows for video logging, and offers advanced metrics for performance analysis. Users can customize displayed metrics and download their data.

Highlights
  • Real-time velocity feedback
  • Capture dozens of data points
  • Save training videos
  • Auto-track sets and reps
  • Generate load/velocity curve
  • Downloadable data
  • Detailed training history
Features
Read full description

RepOne Personal connects to your RepOne 3D Motion Tracker to give you real time velocity feedback and help you train better. See all your workout data including average velocity, peak velocity, peak height, range of motion, and duration, as well as time between sets and number of reps. You can add context to your sets, like tags describing exercise variations or unique attributes, training videos and video logs, and RPE. You can view analysis of your data through advanced metrics like peak end of a metric in a set, absolute loss of a metric in a set, and your estimated one rep max. Features: - Accurate, real-time velocity-based training - Capture dozens of data points about every movement - Save videos for you and your coach to analyze - Save time by auto-tracking sets and reps - Generate a personalized load/velocity curve - Download your data for analysis - Review a detailed history of your training - Customize the set metrics you see Requires a RepOne 3D Motion Tracker

About

RPE 8 (slowdown tracker)

Features
Read full description

Slowdowns in free tier. Works best in 4-20 repetition range and under a minute of time under tension. Limitations: Does not track well true grinder reps. Slower than 20 mm/s. Reps with a pause mid rep are not tracked. Free tier displays slowdowns. The number turns red when the slowdown is likely above RPE 8 for that repetition range. Paid tier displays repetition velocity. Does not collect or send any of your data, all local processing.

Screenshots

RepOne Personal4 screens

Verdict

The call

The clearest difference is update cadence: RPE 8 (slowdown tracker) at every 9 days against RepOne Personal's every 2 months. On price, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

RepOne Personal ships an update every 2 months, RPE 8 (slowdown tracker) every 9 days. The most recent releases landed on October 5, 2026 and October 17, 2026 respectively.

Scorecard1 real difference · 9 level
RepOne Personal versus RPE 8 (slowdown tracker): the parameters behind the verdict, then further details
ParameterRepOne PersonalRPE 8 (slowdown tracker)
PriceFreeFree
Rating3.6 (16 ratings) — better—
Positive reviews25.0% of reviews—
Number of ratings16 — better—
Update frequencyEvery 2 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPod, Apple Watch — better
Requires iOS15.1 — better15.6
Further details — not scored
Size29 MB1 MB
Age rating4+4+
DeveloperSquats & Science Labs, LLC德凯 郝

In-app purchases

None

RepOne Personal

No in-app purchases

None

RPE 8 (slowdown tracker)

No in-app purchases

Questions

Is RepOne Personal free?
RepOne Personal is free to download, with no in-app purchases.
Is RPE 8 (slowdown tracker) free?
RPE 8 (slowdown tracker) is free to download, with no in-app purchases.
Do RepOne Personal or RPE 8 (slowdown tracker) have ads?
Neither RepOne Personal nor RPE 8 (slowdown tracker) shows ads.
Which is updated more often, RepOne Personal or RPE 8 (slowdown tracker)?
RepOne Personal ships an update every 2 months, and RPE 8 (slowdown tracker) every 9 days. Most recently, RepOne Personal was updated on October 5, 2026 and RPE 8 (slowdown tracker) on October 17, 2026.

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