# ReplyContext vs FlowStack

The clearest difference is in-app purchases: FlowStack at none against ReplyContext's 6. ReplyContext's advantage is iOS requirement (18.4 vs 26.2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ReplyContext sells 6 in-app purchases, starting at $2.99 per 7 days. FlowStack asks for nothing beyond the download.

ReplyContext ships an update every 8 months, FlowStack every 5 months. The most recent releases landed on October 19, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | ReplyContext | FlowStack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 5 months** |
| Size | 9 MB | 1 MB |
| Requires iOS | **18.4** | 26.2 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 12+ | 17+ |
| Developer | [helpful bits GmbH](https://appshunter.io/developer/1678742176) | [David Castellano](https://appshunter.io/developer/1892146693) |

## What reviewers say

### ReplyContext

[App page](https://appshunter.io/ios/app/replycontext-ai-reply-writer/id6757863497)

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ReplyContext Pro - Weekly | $2.99 | per 7 days |
| ReplyContext Pro - Monthly | $9.99 | per month |
| ReplyContext Pro - Yearly | $44.99 | per year |
| Small Pack | $4.99 | one-time |
| Medium Pack | $9.99 | one-time |
| Large Pack | $19.99 | one-time |


### FlowStack

[App page](https://appshunter.io/ios/app/flowstack-ai/id6761936853)

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

**In-app purchases:** none


## Frequently asked questions

### Is ReplyContext free?

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

### Is FlowStack free?

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

### Do ReplyContext or FlowStack have ads?

Neither ReplyContext nor FlowStack shows ads.

### Which is updated more often, ReplyContext or FlowStack?

ReplyContext ships an update every 8 months, and FlowStack every 5 months. Most recently, ReplyContext was updated on October 19, 2026 and FlowStack on October 10, 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.*