# PacerX: Race Predictor — Running Analysis & Trends

> Running Analysis & Trends (iPhone/iPad app by Nathan Stryker.)

- Source: https://appshunter.io/ios/app/pacerx-race-predictor/id6772818477 (this page in markdown: same URL + `.md`)
- Developer: [Nathan Stryker](https://appshunter.io/developer/383950754)
- Category: Health & Fitness, Sports
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 12 MB
- Released: 2026-06-06
- Data updated: 2026-09-15
- User reviews in markdown: https://appshunter.io/ios/app/pacerx-race-predictor/id6772818477/reviews.md

## What is PacerX?

How fast could you race today?
PacerX turns the runs already in Apple Health into personalized 5K, 10K, half marathon, and marathon predictions—then shows you the training evidence behind every estimate.
Built for runners who want more than a workout list or a one-result pace calculator, PacerX looks across your recent training, best efforts, trends, pace, heart rate, effort, weather, elevation, and consistency to help you understand where your fitness is heading.
SMARTER RACE PREDICTIONS
See realistic estimates for 5K, 10K, Half Marathon, and Marathon based on your recent training. Open any prediction to understand the runs and signals that influenced it.
PREDICTION HISTORY
Track how your projected race fitness changes over time. See when your training is moving the needle—and when your estimates are holding steady.
DEEP ANALYSIS
On supported devices, Deep Analysis uses Apple Intelligence to give you a deeper explanation of what your recent training says about race readiness. PacerX uses on-device processing where appropriate and can use Apple Private Cloud Compute for supported Deep Analysis requests.
COMPARE YOUR RUNS
Open any run and compare it with a relevant past workout—or choose one yourself. Review pace and heart-rate charts, side-by-side metrics, and context such as route, distance, effort, weather, and elevation.
FIND YOUR BEST RUNS
Discover validated personal bests and standout efforts across your running history, including 1K, mile, 5K, 10K, half marathon, marathon, longest run, most climbing, most consistent splits, and more.
SEE THE FULL PICTURE
Review weekly mileage, monthly and yearly trends, pace, heart rate, cadence, elevation, perceived effort, shoes, running surface, weather, and other context from your training history.
PRIVATE BY DESIGN
PacerX reads your running data from Apple Health. No account is required, there are no ads, and your running history isn't used to build advertising profiles. Optional Deep Analysis may securely process derived training insights using Apple Private Cloud Compute, where request data is not stored.
PacerX doesn't replace your coach or training plan. It gives you a clearer picture of what your training says—so your next conversation, workout, or race decision starts with better context.
Understand your training. See what you're ready for. Keep moving forward.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly Subscription | $4.99 | per month |
| PacerX Annual Subscription | $29.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| PacerX Lifetime | $79.99 | one-time |



## Version history (last 4 releases)

### 1.3.0 — 2026-09-13

PacerX 1.3 is updated for iOS 27 and puts smarter race predictions at the center of your training picture.
• Smarter Race Predictions — Get personalized 5K, 10K, Half Marathon, and Marathon estimates built from your recent training—not just one race result or a simple pace formula.
• Prediction History — See how your projected race fitness changes over time.
• Deep Analysis — Use Apple Intelligence to get a deeper explanation of what your training says about race readiness.
• More polish — Faster history, better refresh behavior, clearer workout evidence, and reliability improvements throughout the app.

### 1.2 — 2026-09-07

This update improves the reliability of PacerX Pro purchases and restores, especially when reconnecting an existing subscription.
Plus a few behind-the-scenes fixes to keep everything running smoothly.

### 1.1 — 2026-07-20

COMPARE RUNS

Open any run and tap Compare Run to see it alongside a similar workout—or choose any run yourself. Pacer-X recommends relevant matches based on route, distance, and effort, explains why each was selected, and shows overlaid pace and heart rate charts, side-by-side metrics, and clear observations grounded in your data.

BEST RUNS

A new section in Trends surfaces your standout performances, including your fastest 1K, mile, 5K, 10K, half marathon, and marathon, along with your longest run, most climbing, most consistent splits, and steadiest heart rate.

See your top results, compare each record with your previous best, and understand exactly how it was calculated. Runs that hold a record receive a subtle Personal Best badge.

TRUSTED RECORDS

Pacer-X validates results before awarding a personal best, so GPS spikes, tracking gaps, paused stretches, and implausible pace data do not create false records.

Version 1.1 also includes performance and stability improvements throughout the app.

### 1.0 — 2026-06-06

No release notes.

## More apps by Nathan Stryker

- [Goalie Scout](https://appshunter.io/ios/app/goalie-scout/id504940749)
- [Dark Skies: Astrophotography](https://appshunter.io/ios/app/dark-skies-astrophotography/id843351673)
- [Five Hole: Hockey Goalie Stats](https://appshunter.io/ios/app/five-hole-hockey-goalie-stats/id6762281961)
- [DoseTogether: Pet Meds](https://appshunter.io/ios/app/dosetogether-pet-meds/id6804283169)
- [BenefitProof HSA & FSA](https://appshunter.io/ios/app/benefitproof-hsa-and-fsa/id6804800189)

All apps by Nathan Stryker: https://appshunter.io/developer/383950754

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-15.*