# String Projects vs Prompt Vector

The clearest difference is in-app purchases: String Projects at none against Prompt Vector's 2. String Projects also leads on iOS requirement (13.0 vs 17.0). Prompt Vector's advantage is update cadence (every 6 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Prompt Vector sells 2 in-app purchases, starting at $4.99 per month. String Projects asks for nothing beyond the download.

String Projects ships an update every 3 weeks, Prompt Vector every 6 days. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | String Projects | Prompt Vector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/prompt-vector/id6764571041/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Monetization | — | Freemium |
| Size | 23 MB | 17 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Sarv Webs Private Limited](https://appshunter.io/developer/1758909406) | [Hen Solutions LLC](https://appshunter.io/developer/1895444041) |

## What reviewers say

### String Projects

[App page](https://appshunter.io/ios/app/string-projects/id6761903070)

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

**In-app purchases:** none


### Prompt Vector

[App page](https://appshunter.io/ios/app/prompt-vector/id6764571041)

Access a curated library of over 2000 expert-crafted AI prompts for professionals. Find prompts tailored to specific industries and job functions, with customizable variables and expected output formats. Integrates with Siri Shortcuts and works offline for seamless use.

**Highlights:** 2000+ expert-crafted AI prompts, Customizable prompt variables, Filter by AI tool, industry, or job function, One-tap copy to clipboard, Siri Shortcuts integration, Offline access, Built-in AI prompt generator

**Features:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PromptVector Premium (Monthly) | $4.99 | per month |
| PromptVector Premium (Annual) | $29.99 | per year |


## Frequently asked questions

### Is String Projects free?

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

### Is Prompt Vector free?

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

### Do String Projects or Prompt Vector have ads?

Neither String Projects nor Prompt Vector shows ads.

### Which is updated more often, String Projects or Prompt Vector?

String Projects ships an update every 3 weeks, and Prompt Vector every 6 days. Most recently, String Projects was updated on October 6, 2026 and Prompt Vector on October 1, 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.*