# EnduroCalc vs TreadLeft

The clearest difference is price: TreadLeft at Free against EnduroCalc's $0.99. TreadLeft also leads on iOS requirement (15.1 vs 18.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

TreadLeft is free to download; EnduroCalc costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

EnduroCalc ships an update every 3 weeks, TreadLeft fortnightly. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | EnduroCalc | TreadLeft |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/treadleft/id6756678478/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Paid | **Free** |
| Size | 12 MB | 51 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Marco Reinke](https://appshunter.io/developer/1164428495) | [David Burns](https://appshunter.io/developer/1862256179) |

## What reviewers say

### EnduroCalc

[App page](https://appshunter.io/ios/app/endurocalc/id6743703780)

This app helps endurance athletes plan training and race days. Calculate target times, paces, energy needs, and nutrition plans for running, cycling, swimming, and triathlon. It offers a minimalist interface designed for focus.

**Highlights:** Pace calculators for various units, Triathlon mode with distance templates, CSS calculator for swimming, Carbohydrate needs calculator, Personalized nutrition plan generation, Ad-free and minimalist design

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

**In-app purchases:** none


### TreadLeft

[App page](https://appshunter.io/ios/app/treadleft/id6756678478)

Automate your running shoe mileage tracking by connecting to Strava and Apple Health. Visualize gear wear, manage your shoe rotation, and get notified of deals on new models.

**Highlights:** Automated activity syncing, Tactical shoe loadout management, Visual wear tracking with color-coding, Shoe retirement tracking, Advanced performance analytics, Live shoe deals and price alerts

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

**In-app purchases:** none


## Frequently asked questions

### Is EnduroCalc free?

EnduroCalc costs $0.99, with no in-app purchases.

### Is TreadLeft free?

TreadLeft is free to download, with no in-app purchases.

### Do EnduroCalc or TreadLeft have ads?

Neither EnduroCalc nor TreadLeft shows ads.

### Which is updated more often, EnduroCalc or TreadLeft?

EnduroCalc ships an update every 3 weeks, and TreadLeft fortnightly. Most recently, EnduroCalc was updated on October 30, 2026 and TreadLeft on November 5, 2026.

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