# EcoGPT vs InkStack

The clearest difference is in-app purchases: InkStack at none against EcoGPT's 10. EcoGPT's advantage is update cadence (weekly vs every 3 weeks) and chart position (#117 vs unranked). On price, ads and device support there is nothing between them.

Both are free to download. EcoGPT sells 10 in-app purchases, starting at $5.99 per month. InkStack asks for nothing beyond the download.

EcoGPT ships an update weekly, InkStack every 3 weeks. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | EcoGPT | InkStack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (11K ratings)](https://appshunter.io/ios/app/ecogpt/id6756059656/reviews)** | — |
| Number of ratings | **11K** | — |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#117** | — |
| Size | 225 MB | 17 MB |
| Requires iOS | **18.0** | 26.2 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [EcoGPT Inc](https://appshunter.io/developer/6785926865) | [Yogesh Rathod](https://appshunter.io/developer/1548316962) |

## What reviewers say

### EcoGPT

[App page](https://appshunter.io/ios/app/ecogpt/id6756059656)

**Currently charting:** #117 Top Free · Productivity (US App Store)

This AI assistant helps with writing, learning, planning, and research, offering web search and image creation. It also tracks your positive environmental impact by funding tree planting with every 100 chats.

**Highlights:** AI-powered writing and editing, Web search and information retrieval, Image generation from prompts, Planning for work, school, and life, Impact tracking for tree planting, Apple Watch integration

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EcoGPT Monthly Subscription | $5.99 | per month |
| EcoGPT Monthly Subscription. | $7.00 | per month |
| EcoGPT Monthly Subscription | $9.99 | per month |
| Monthly Subscription | $9.99 | per month |
| EcoGPT Yearly Subscription. | $9.99 | per year |
| EcoGPT Monthly Subscription. | $10.00 | per month |
| EcoGPT Monthly Subscription. | $10.00 | per month |
| EcoGPT Monthly Subscription. | $24.99 | per month |
| EcoGPT Yearly Subscription. | $29.00 | per year |
| EcoGPT Yearly Subscription. | $59.99 | per year |


### InkStack

[App page](https://appshunter.io/ios/app/inkstack/id6806162103)

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

**In-app purchases:** none


## Frequently asked questions

### Is EcoGPT free?

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

### Is InkStack free?

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

### Do EcoGPT or InkStack have ads?

Both EcoGPT and InkStack show ads.

### Which is updated more often, EcoGPT or InkStack?

EcoGPT ships an update weekly, and InkStack every 3 weeks. Most recently, EcoGPT was updated on November 9, 2026 and InkStack on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*