# AI App Localization vs SAL SPU

The clearest difference is in-app purchases: SAL SPU at none against AI App Localization's 3. SAL SPU also leads on iOS requirement (12.4 vs 16.1). AI App Localization's advantage is update cadence (weekly vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. AI App Localization sells 3 in-app purchases, starting at $18.99 per month. SAL SPU asks for nothing beyond the download.

AI App Localization ships an update weekly, SAL SPU every 3 weeks. The most recent releases landed on October 25, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | AI App Localization | SAL SPU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ai-app-localization-xcstrings/id6449774982/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Freemium | — |
| Size | 16 MB | 55 MB |
| Requires iOS | 16.1 | **12.4** |
| Devices | **iPhone, iPad, Mac, Vision Pro** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sparrow Code LTD](https://appshunter.io/developer/1617623165) | [Smart Marine Technologies](https://appshunter.io/developer/1737810226) |

## What reviewers say

### AI App Localization

[App page](https://appshunter.io/ios/app/ai-app-localization-xcstrings/id6449774982)

This tool streamlines app localization by supporting XLIFF, XCLOC, and Xcstrings file formats. It offers features like spell checking, a word library for unique terms, and real-time identification of missing lines and text parameters. Edit multiple files simultaneously and save changes to existing or new files.

**Highlights:** Supports XLIFF, XCLOC, Xcstrings formats, Spell checking and word library, Identifies missing lines and parameters, Edit multiple files simultaneously, Save to current or new files, Pluralization support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Access for Month | $18.99 | per month |
| Access for Half of Year | $49.99 | per 6 months |
| Access for Year | $69.99 | per year |


### SAL SPU

[App page](https://appshunter.io/ios/app/sal-spu-100/id6479996680)

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

**In-app purchases:** none


## Frequently asked questions

### Is AI App Localization free?

AI App Localization is free to download, with in-app purchases available.

### Is SAL SPU free?

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

### Do AI App Localization or SAL SPU have ads?

Neither AI App Localization nor SAL SPU shows ads.

### Which is updated more often, AI App Localization or SAL SPU?

AI App Localization ships an update weekly, and SAL SPU every 3 weeks. Most recently, AI App Localization was updated on October 25, 2026 and SAL SPU on October 27, 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.*