# ProseKey AI vs Spike AI

The clearest difference is rating: ProseKey AI at 5.0 against Spike AI's 3.1. Spike AI's advantage is ratings volume (11 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ProseKey AI holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: Spike AI has 11 ratings behind it against 1, so its average is the more settled of the two.

ProseKey AI ships an update fortnightly, Spike AI every 8 days. The most recent releases landed on October 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | ProseKey AI | Spike AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/prosekey-ai/id6741180175/reviews)** | [3.1 (11 ratings)](https://appshunter.io/ios/app/spike-ai/id6749781844/reviews) |
| Number of ratings | 1 | **11** |
| Positive reviews | — | 71.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 8 days** |
| Monetization | Free | Free |
| Size | 29 MB | 121 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Arya Mirsepasi](https://appshunter.io/developer/1791440463) | [Jan Stellmann](https://appshunter.io/developer/1832066618) |

## What reviewers say

### ProseKey AI

[App page](https://appshunter.io/ios/app/prosekey-ai/id6741180175)

Enhance your mobile writing with an AI-powered keyboard. It offers instant proofreading, effortless rewriting, quick summarization, and text-to-table conversion. Connect your own API keys for personalized AI assistance across all your apps.

**Highlights:** Instant proofreading, Effortless rewriting, Quick summarization, Text-to-table conversion, Custom AI instructions, Third-party keyboard integration

**In-app purchases:** none


### Spike AI

[App page](https://appshunter.io/ios/app/spike-ai/id6749781844)

This AI chat application offers flexible model execution, allowing you to use cloud-based AI, your own on-device models, or connect to a remote server. It supports encrypted conversation syncing across devices and project organization for managing your AI interactions.

**Highlights:** Cloud-based AI chat, On-device model execution, Connect to OpenAI-compatible servers, Sync encrypted conversations, Organize chats in projects, Choose tools for tasks

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

**In-app purchases:** none


## Frequently asked questions

### Is ProseKey AI free?

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

### Is Spike AI free?

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

### Which has better reviews, ProseKey AI or Spike AI?

ProseKey AI is rated higher. ProseKey AI averages 5.0 out of 5 from 1 ratings, while Spike AI averages 3.1 from 11 ratings.

### Do ProseKey AI or Spike AI have ads?

Neither ProseKey AI nor Spike AI shows ads.

### Which is updated more often, ProseKey AI or Spike AI?

ProseKey AI ships an update fortnightly, and Spike AI every 8 days. Most recently, ProseKey AI was updated on October 7, 2026 and Spike AI on October 30, 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.*