# Marble vs Iron Pulse

The clearest difference is in-app purchases: Marble at none against Iron Pulse's 4. Iron Pulse's advantage is update cadence (every 3 days vs every 9 days). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Iron Pulse sells 4 one-off in-app purchases. Marble asks for nothing beyond the download.

Iron Pulse holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 6 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Marble ships an update every 9 days, Iron Pulse every 3 days. The most recent releases landed on October 7, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Marble | Iron Pulse |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (6 ratings)](https://appshunter.io/ios/app/marble-ai-journaling-guide/id6479338137/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/iron-pulse/id6745999918/reviews)** |
| Number of ratings | **6** | 4 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 3 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 75 MB | 36 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Matthew Walter](https://appshunter.io/developer/1689854411) | [Shayan Khan](https://appshunter.io/developer/1814752144) |

## What reviewers say

### Marble

[App page](https://appshunter.io/ios/app/marble-ai-journaling-guide/id6479338137)

This app offers a guided journaling experience with voice and text input. It helps users track mood and sleep, cultivate gratitude, and connect with a coach for personalized support and insights.

**Highlights:** Voice and text journaling, Coach connection, Insightful reflections, Daily gratitude practices, Sleep and mood tracking, Notes and photo uploads

**Features:** macOS Compatibility

**In-app purchases:** none


### Iron Pulse

[App page](https://appshunter.io/ios/app/iron-pulse/id6745999918)

This app helps serious lifters track their workouts with detailed logging and progress visualization. Create custom routines, monitor sets with RIR and notes, and analyze your training split. It offers exercise library management and data import/export for flexibility.

**Highlights:** Custom workout routine creation, Detailed set logging (weight, reps, RIR, notes), Weekly training summaries, Progress tracking with charts, Exercise library management, Workout history review, Data import and export

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donation $1 | $0.99 | one-time |
| Donation $2.5 | $2.49 | one-time |
| Donation $5 | $4.99 | one-time |
| Donation $10 | $9.99 | one-time |


## Frequently asked questions

### Is Marble free?

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

### Is Iron Pulse free?

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

### Which has better reviews, Marble or Iron Pulse?

Iron Pulse is rated higher. Marble averages 4.8 out of 5 from 6 ratings, while Iron Pulse averages 5.0 from 4 ratings.

### Do Marble or Iron Pulse have ads?

Neither Marble nor Iron Pulse shows ads.

### Which is updated more often, Marble or Iron Pulse?

Marble ships an update every 9 days, and Iron Pulse every 3 days. Most recently, Marble was updated on October 7, 2026 and Iron Pulse on October 28, 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.*