# Pencil Workout Log vs Chronos Interval

The clearest difference is in-app purchases: Chronos Interval at none against Pencil Workout Log's 2. Chronos Interval also leads on iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Pencil Workout Log sells 2 in-app purchases, starting at $2.99 per month. Chronos Interval asks for nothing beyond the download.

## The numbers

| Metric | Pencil Workout Log | Chronos Interval |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/chronos-interval/id6759797548/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | — | Free |
| Size | 208 MB | 46 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Robin Alexander Laumb](https://appshunter.io/developer/1866605028) | [Bo Li](https://appshunter.io/developer/1875535445) |

## What reviewers say

### Pencil Workout Log

[App page](https://appshunter.io/ios/app/pencil-workout-log/id6757395509)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pencil Pro (Månedlig) | $2.99 | per month |
| Pencil Pro (Årlig) | $89.99 | per year |


### Chronos Interval

[App page](https://appshunter.io/ios/app/chronos-interval/id6759797548)

Design custom workout protocols like HIIT, Tabata, or circuits with voice coaching. Sync seamlessly with Garmin devices for automatic data backup. Track your progress and replay past sessions to build consistency.

**Highlights:** Voice-guided workouts, Garmin Connect sync, Built-in workout protocols, Custom interval design, Progress tracking, Cross-device sync

**In-app purchases:** none


## Frequently asked questions

### Is Pencil Workout Log free?

Pencil Workout Log is free to download, with in-app purchases available.

### Is Chronos Interval free?

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

### Do Pencil Workout Log or Chronos Interval have ads?

Neither Pencil Workout Log nor Chronos Interval shows ads.

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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.*