# Stack vs Laktic Pace Calculator

The clearest difference is price: Laktic Pace Calculator at Free against Stack's $6.99. Laktic Pace Calculator also leads on iOS requirement (15.1 vs 26.0). Stack's advantage is update cadence (daily vs every 9 days). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Laktic Pace Calculator is free to download; Stack costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Stack against 5.0 for Laktic Pace Calculator. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Stack ships an update daily, Laktic Pace Calculator every 9 days. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Stack | Laktic Pace Calculator |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/stack-daily-intentions/id6781799978/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/laktic-pace-calculator/id6808660864/reviews) |
| Number of ratings | 1 | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Every 9 days |
| Monetization | Paid | **Free** |
| Size | 1 MB | 28 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [hsla0001](https://appshunter.io/developer/1778537322) | [Travis Mahoney](https://appshunter.io/developer/1896344290) |

## What reviewers say

### Stack

[App page](https://appshunter.io/ios/app/stack-daily-intentions/id6781799978)

This app helps you build and complete habits within a 90-day timeframe. It focuses on finishing cycles rather than perpetual tracking, with a limit of three habits at a time. The interface uses a grid to mark progress, and a widget provides quick access to daily tasks.

**Highlights:** Three habit limit, 90-day completion cycles, Manual grid progress tracking, Home-screen widget, One honest skip per week, No accounts or data collection

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

**In-app purchases:** none


### Laktic Pace Calculator

[App page](https://appshunter.io/ios/app/laktic-pace-calculator/id6808660864)

Calculate heat-adjusted running paces for training and racing. Input your personal records and current weather conditions to receive adjusted threshold zones and per-mile ranges. Coaches can manage athlete rosters and share workout boards.

**Highlights:** Heat-adjusted threshold paces, Race PR and track/road pace calculation, Temperature and dew point adjustment, Rep length scaling for heat penalty, Athlete roster management for coaches, Workout board sharing, Session logging and performance comparison

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

**In-app purchases:** none


## Frequently asked questions

### Is Stack free?

Stack costs $6.99, with no in-app purchases.

### Is Laktic Pace Calculator free?

Laktic Pace Calculator is free to download, with no in-app purchases.

### Which has better reviews, Stack or Laktic Pace Calculator?

Stack and Laktic Pace Calculator are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Stack or Laktic Pace Calculator have ads?

Neither Stack nor Laktic Pace Calculator shows ads.

### Which is updated more often, Stack or Laktic Pace Calculator?

Stack ships an update daily, and Laktic Pace Calculator every 9 days. Most recently, Stack was updated on October 14, 2026 and Laktic Pace Calculator on October 11, 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.*