# Clay Days vs OnTrack

The clearest difference is price: OnTrack at Free against Clay Days's $0.99. OnTrack also leads on review sentiment (37% vs 0%) and update cadence (every 4 weeks vs every 38 months). Clay Days's advantage is in-app purchases (none vs 2) and iOS requirement (15.6 vs 18.6). On ads and device support there is nothing between them.

OnTrack is free to download; Clay Days costs $0.99 up front. OnTrack sells 2 in-app purchases, starting at $3.99 per month. Clay Days asks for nothing beyond the download.

Clay Days ships an update every 38 months, OnTrack every 4 weeks. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Clay Days | OnTrack |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[3.3 (57 ratings)](https://appshunter.io/ios/app/ontrack-obd2-scanner/id6446315145/reviews)** |
| Number of ratings | — | **57** |
| Positive reviews | 0.0% of reviews | **37.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 4 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 2 MB | 22 MB |
| Requires iOS | **15.6** | 18.6 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Hector Forrester](https://appshunter.io/developer/1557103037) | [OnTrack Apps Limited](https://appshunter.io/developer/1647551624) |

## What reviewers say

### Clay Days

[App page](https://appshunter.io/ios/app/clay-days/id1596528177)

This app helps skeet and clay pigeon shooters meticulously track their scores and shooting ratios. It provides an overview of your overall performance, time since your last session, and total clays hit. Review past shooting days and scores on individual stands.

**Highlights:** Score tracking, Ratio calculation, Overall performance overview, History of past shooting days, Stand-specific score review

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### OnTrack

[App page](https://appshunter.io/ios/app/ontrack-obd2-scanner/id6446315145)

Monitor your car's real-time performance data on the racetrack with this CarPlay-enabled app. Set custom alerts for critical parameters like temperature to optimize your vehicle's performance and stay focused on the road.

**Highlights:** CarPlay integration, Real-time performance monitoring, Engine RPM, coolant temperature, oil pressure, Customizable temperature alerts, Instant notifications for threshold breaches, User-friendly display

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Yearly - Best Value | $29.99 | per year |

**What reviewers like**

- 👍 Great CarPlay integration
- 💡 Useful for monitoring temps and info
- 🚀 Fast refresh rate
- 👍 Easy to read info at a glance
- 👍 Highly customizable

**What reviewers complain about**

- 🐛 Connection issues with various dongles
- 🐛 Lack of support/unresponsive developers
- 🐛 App crashes
- 🐛 Limited PIDs available
- 🐛 Boost pressure limit

**Reported bugs**

- Lost connections with Vgate Pro
- App crashes as soon as it connects to OBD2 reader since iOS 18
- Öltemperatur (Oil temperature) not read for VW/Audi vehicles
- Boost bar maxes at 1.5 bar / 22.3psi
- Not connecting to OBDLink CX

**Requested features**

- Add gauges instead of numbers for CarPlay
- Add more PIDs (e.g., exhaust gas temperature, transmission temp)
- Vehicle selector
- Support landscape mode
- Add custom PIDs for vehicle-specific measurements


## Frequently asked questions

### Is Clay Days free?

Clay Days costs $0.99, with no in-app purchases.

### Is OnTrack free?

OnTrack is free to download, with in-app purchases available.

### Do Clay Days or OnTrack have ads?

Neither Clay Days nor OnTrack shows ads.

### Which is updated more often, Clay Days or OnTrack?

Clay Days ships an update every 38 months, and OnTrack every 4 weeks. Most recently, Clay Days was updated on October 24, 2026 and OnTrack on October 27, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*