# SPUD Robot vs Catalyst

The clearest difference is in-app purchases: SPUD Robot at none against Catalyst's 2. Catalyst's advantage is update cadence (weekly vs every 48 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Catalyst sells 2 in-app purchases, starting at $14.99 per month. SPUD Robot asks for nothing beyond the download.

SPUD Robot ships an update every 48 months, Catalyst weekly. The most recent releases landed on September 23, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | SPUD Robot | Catalyst |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/catalyst-ai-habit-tracker/id6763444673/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 48 months | **Weekly** |
| Monetization | — | Freemium |
| Size | 44 MB | 105 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [TMR IND.](https://appshunter.io/developer/499126854) | [Alana Spencer](https://appshunter.io/developer/1874386788) |

## What reviewers say

### SPUD Robot

[App page](https://appshunter.io/ios/app/spud-robot/id1532630193)

**Features:** macOS Compatibility

**In-app purchases:** none


### Catalyst

[App page](https://appshunter.io/ios/app/catalyst-ai-habit-tracker/id6763444673)

This AI coach proactively checks in on your goals and projects, remembering past conversations to offer personalized guidance. It helps cut through overwhelm by turning scattered thoughts into actionable priorities through voice interaction.

**Highlights:** Proactive AI check-ins, Voice-first interaction, Memory of past conversations, Goal and project prioritization, Pattern recognition, Personalized coaching strategies

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Catalyst Premium Monthly | $14.99 | per month |
| Catalyst Premium Yearly | $119.99 | per year |


## Frequently asked questions

### Is SPUD Robot free?

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

### Is Catalyst free?

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

### Do SPUD Robot or Catalyst have ads?

Neither SPUD Robot nor Catalyst shows ads.

### Which is updated more often, SPUD Robot or Catalyst?

SPUD Robot ships an update every 48 months, and Catalyst weekly. Most recently, SPUD Robot was updated on September 23, 2026 and Catalyst on September 21, 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.*