# ProseKey AI vs Spike Studio

The clearest difference is rating: ProseKey AI at 5.0 against Spike Studio's 3.1. Spike Studio'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 Studio has 11 ratings behind it against 1, so its average is the more settled of the two.

ProseKey AI ships an update fortnightly, Spike Studio every 8 days. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | ProseKey AI | Spike Studio |
| --- | --- | --- |
| 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-studio/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 | 118 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| 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 Studio

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

Run powerful AI models locally on your device without cloud dependence. Enjoy private, fast responses and full control over your AI experience. Ideal for developers and AI enthusiasts seeking unlimited model usage and zero tracking.

**Highlights:** Run AI models locally, No cloud dependence, Private data processing, Zero cloud costs, Unlimited model usage, Instant responses

**Features:** macOS Compatibility, Apple Watch app, 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 Studio free?

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

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

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

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

Neither ProseKey AI nor Spike Studio shows ads.

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

ProseKey AI ships an update fortnightly, and Spike Studio every 8 days. Most recently, ProseKey AI was updated on October 7, 2026 and Spike Studio on October 6, 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.*