Substack vs ChatGPT
Side-by-side comparison on App Store — Updated 2026
| Metric | Substack | ChatGPT |
|---|---|---|
| Developer | Substack, Inc. | OpenAI OpCo, LLC |
| Rating | 4.9★ | 4.8★ |
| Reviews | 404.3K | 6.1M |
| Installs | — | — |
| Price | Free | Free |
| In-App Purchases | Yes (10 items) | Yes (5 items) |
| Best Rank | #2 | #1 |
| Content Rating | 17+ | 12+ |
| Last Updated | 2026-03-09 | 2026-03-10 |
Substack vs ChatGPT: Overview
Substack and ChatGPT are both DEVELOPER_TOOLS apps available on the App Store. Substack has a 4.9-star rating from 404.3K reviews, while ChatGPT has 4.8 stars from 6.1M reviews. In terms of rankings, Substack reaches #2 and ChatGPT reaches #1 in the DEVELOPER_TOOLS charts. Substack offers 10 in-app purchases, while ChatGPT offers 5 in-app purchases.
Frequently Asked Questions
Which is better, Substack or ChatGPT?
Based on user ratings, Substack (4.9★) is rated higher than ChatGPT (4.8★). However, the best choice depends on your specific needs.
Is Substack or ChatGPT more popular?
ChatGPT has more reviews (6.1M) compared to Substack (404.3K), suggesting it is more widely used.
Are Substack and ChatGPT free?
Substack is free with in-app purchases. ChatGPT is free with in-app purchases. View IAP prices.
What category are Substack and ChatGPT in?
Both apps are in the DEVELOPER_TOOLS category on App Store. See the full DEVELOPER_TOOLS category report.