# Kindoo vs Marbles in a Jar

The clearest difference is in-app purchases: Kindoo at none against Marbles in a Jar's 1. Kindoo also leads on ratings volume (38 vs 6). Marbles in a Jar's advantage is review sentiment (80% vs 47%) and update cadence (every 4 days vs monthly). On price, rating, ads and device support there is nothing between them.

Both are free to download. Marbles in a Jar sells 1 one-off in-app purchase. Kindoo asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.6 for Kindoo against 3.5 for Marbles in a Jar. That said, the two scores are not equally well evidenced: Kindoo has 38 ratings behind it against 6, so its average is the more settled of the two. Written reviews are what separate them: 47% of Kindoo's written reviews are positive against 80% of Marbles in a Jar's.

Kindoo ships an update monthly, Marbles in a Jar every 4 days. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Kindoo | Marbles in a Jar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (38 ratings)](https://appshunter.io/ios/app/kindoo/id1156890830/reviews)** | [3.5 (6 ratings)](https://appshunter.io/ios/app/marbles-in-a-jar/id1350121222/reviews) |
| Number of ratings | **38** | 6 |
| Positive reviews | 47.4% of reviews | **80.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 53 MB | 43 MB |
| Requires iOS | 15.1 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KINDOO LLP](https://appshunter.io/developer/6788279646) | [Thomas Aref](https://appshunter.io/developer/1350121221) |

## What reviewers say

### Kindoo

[App page](https://appshunter.io/ios/app/kindoo/id1156890830)

Transform any electric door into a smart door using your smartphone. This system combines proprietary hardware with a mobile application to provide convenient remote access without altering existing locks.

**Highlights:** Remote door control, Smartphone integration, Smart door conversion, No lock changes required, Proprietary hardware system

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

**In-app purchases:** none


### Marbles in a Jar

[App page](https://appshunter.io/ios/app/marbles-in-a-jar/id1350121222)

This app allows you to create a virtual marble jar to track progress, rewards, or habits. Customize jar and marble sizes, and enjoy realistic 3D physics for interactive play. It's a versatile tool for personal motivation or as a virtual swear jar.

**Highlights:** Virtual marble jar for tracking, Customizable jar and marble sizes, Realistic 3D physics, Interactive marble play, Progress tracking for rewards, Virtual swear jar functionality

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Choose Marble Color | $2.99 | one-time |


## Frequently asked questions

### Is Kindoo free?

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

### Is Marbles in a Jar free?

Marbles in a Jar is free to download, with in-app purchases available.

### Which has better reviews, Kindoo or Marbles in a Jar?

Kindoo is rated higher. Kindoo averages 3.6 out of 5 from 38 ratings, while Marbles in a Jar averages 3.5 from 6 ratings.

### Do Kindoo or Marbles in a Jar have ads?

Neither Kindoo nor Marbles in a Jar shows ads.

### Which is updated more often, Kindoo or Marbles in a Jar?

Kindoo ships an update monthly, and Marbles in a Jar every 4 days. Most recently, Kindoo was updated on November 6, 2026 and Marbles in a Jar on November 2, 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.*