# STPC APP vs ChatAI

The clearest difference is in-app purchases: STPC APP at none against ChatAI's 2. STPC APP also leads on update cadence (every 6 weeks vs every 18 months). ChatAI's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. ChatAI sells 2 in-app purchases, starting at $7.99 per 7 days. STPC APP asks for nothing beyond the download.

STPC APP ships an update every 6 weeks, ChatAI every 18 months. The most recent releases landed on October 20, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | STPC APP | ChatAI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/stpc-app/id1565529283/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 18 months |
| Monetization | Ad-supported | — |
| Size | 102 MB | 15 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SATET LLC](https://appshunter.io/developer/1565529285) | [Blazelin Tech](https://appshunter.io/developer/1710814444) |

## What reviewers say

### STPC APP

[App page](https://appshunter.io/ios/app/stpc-app/id1565529283)

This utility app helps identify process problems and assess capability to meet customer requirements using control charts. It features task management, recurring jobs, and flexible data handling with programmable input fields.

**Highlights:** Process problem identification, Capability assessment, Control chart analysis, Task management, Periodically repeating jobs, Programmable data fields

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

**In-app purchases:** none


### ChatAI

[App page](https://appshunter.io/ios/app/chatai-ai-assistant/id6470879375)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $7.99 | per 7 days |
| Premium Annually | $49.99 | per year |


## Frequently asked questions

### Is STPC APP free?

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

### Is ChatAI free?

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

### Do STPC APP or ChatAI have ads?

STPC APP shows ads; ChatAI does not.

### Which is updated more often, STPC APP or ChatAI?

STPC APP ships an update every 6 weeks, and ChatAI every 18 months. Most recently, STPC APP was updated on October 20, 2026 and ChatAI on October 17, 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.*