# KeyFlow AI Keyboard & Writer vs PenSign

KeyFlow AI Keyboard & Writer and PenSign are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. KeyFlow AI Keyboard & Writer sells 3 in-app purchases, starting at $4.99 per month and PenSign sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

KeyFlow AI Keyboard & Writer ships an update every 11 days, PenSign fortnightly. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | KeyFlow AI Keyboard & Writer | PenSign |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/keyflow-ai-keyboard-and-writer/id6758787816/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 11 days** | Fortnightly |
| Monetization | Freemium | — |
| Size | 19 MB | 19 MB |
| Requires iOS | 18.0 | **17.4** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Lumozz](https://appshunter.io/developer/1875045168) | [Abdumukhtor Turgunboev](https://appshunter.io/developer/1826183508) |

## What reviewers say

### KeyFlow AI Keyboard & Writer

[App page](https://appshunter.io/ios/app/keyflow-ai-keyboard-and-writer/id6758787816)

Enhance your writing with an AI-powered keyboard. Instantly rewrite messages in different tones, fix grammar, translate languages, and dictate with accurate transcription. Save frequently used phrases and replay past actions seamlessly within any app.

**Highlights:** Rewrite messages with different tones, Instant spelling and grammar correction, Translate to over 50 languages, Whisper-powered dictation, Save and reuse text snippets, Replay recent actions

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KeyFlow Pro | $4.99 | per month |
| KeyFlow Pro | $39.99 | per year |
| KeyFlow BYOK Lifetime | $14.99 | one-time |


### PenSign

[App page](https://appshunter.io/ios/app/pensign-document-signer/id6814628676)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PenSign Lifetime | $9.99 | one-time |
| PenSign Unlimited | $14.99 | one-time |


## Frequently asked questions

### Is KeyFlow AI Keyboard & Writer free?

KeyFlow AI Keyboard & Writer is free to download, with in-app purchases available.

### Is PenSign free?

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

### Do KeyFlow AI Keyboard & Writer or PenSign have ads?

Neither KeyFlow AI Keyboard & Writer nor PenSign shows ads.

### Which is updated more often, KeyFlow AI Keyboard & Writer or PenSign?

KeyFlow AI Keyboard & Writer ships an update every 11 days, and PenSign fortnightly. Most recently, KeyFlow AI Keyboard & Writer was updated on October 31, 2026 and PenSign on October 24, 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.*