# EmberRun Calc vs Guardian Chart

The clearest difference is in-app purchases: Guardian Chart at none against EmberRun Calc's 8. Guardian Chart also leads on update cadence (every 4 days vs every 7 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. EmberRun Calc sells 8 one-off in-app purchases. Guardian Chart asks for nothing beyond the download.

EmberRun Calc ships an update every 7 months, Guardian Chart every 4 days. The most recent releases landed on October 19, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | EmberRun Calc | Guardian Chart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/emberrun-calc/id6742080044/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 45 MB |
| Requires iOS | 26.6 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Brian White](https://appshunter.io/developer/1796708452) | [SSRS Labs LLC](https://appshunter.io/developer/1885187856) |

## What reviewers say

### EmberRun Calc

[App page](https://appshunter.io/ios/app/emberrun-calc/id6742080044)

This app helps runners plan their training, predict race times, and log their progress. It offers quick calculations for pace, distance, and time, with options to save results and customize the interface. Unlock advanced features like race time predictions and iCloud backup with a one-time purchase.

**Highlights:** Pace, time, and distance calculations, Automatic unit conversions, Save and backup race results, Accurate race time predictions, Customizable themes and controls, Age grading percentages

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Race Predictions | $0.99 | one-time |
| Color Themes | $0.99 | one-time |
| Small Tip | $0.99 | one-time |
| Save Results | $2.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Product Launch Bundle | $3.99 | one-time |
| Large Tip | $4.99 | one-time |
| Extra Large Tip | $9.99 | one-time |


### Guardian Chart

[App page](https://appshunter.io/ios/app/guardian-chart/id6760737510)

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

**In-app purchases:** none


## Frequently asked questions

### Is EmberRun Calc free?

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

### Is Guardian Chart free?

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

### Do EmberRun Calc or Guardian Chart have ads?

Neither EmberRun Calc nor Guardian Chart shows ads.

### Which is updated more often, EmberRun Calc or Guardian Chart?

EmberRun Calc ships an update every 7 months, and Guardian Chart every 4 days. Most recently, EmberRun Calc was updated on October 19, 2026 and Guardian Chart on October 6, 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.*