# ReadLock vs SPSS File Viewer

The clearest difference is in-app purchases: SPSS File Viewer at none against ReadLock's 7. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ReadLock sells 7 in-app purchases, starting at $5.99 per 7 days. SPSS File Viewer asks for nothing beyond the download.

## The numbers

| Metric | ReadLock | SPSS File Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/readlock-screen-time-control/id6754204083/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | — |
| Monetization | Freemium | — |
| Size | 68 MB | 6 MB |
| Requires iOS | 17 | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [Acha Igwe](https://appshunter.io/developer/1847064265) | [Rafal Rybnik](https://appshunter.io/developer/1518562985) |

## What reviewers say

### ReadLock

[App page](https://appshunter.io/ios/app/readlock-screen-time-control/id6754204083)

This app helps you reclaim your reading time by blocking distracting apps and websites during dedicated reading sessions. It uses AI to score your comprehension based on your notes, ensuring genuine engagement with your reading material. Track progress, manage your book library, and build a consistent reading habit.

**Highlights:** Distraction locking via Screen Time, AI comprehension scoring, AI summary suggestions, Book scanning and search, Works with any book format, Progress tracking, Habit building tools

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ReadLock Premium (weekly) | $5.99 | per 7 days |
| ReadLock Premium (Monthly) | $5.99 | per month |
| ReadLock Premium (Monthly) | $9.99 | per month |
| ReadLock Premium (Yearly v2) | $29.99 | per year |
| ReadLock Premium (Yearly) | $49.99 | per year |
| ReadLock Premium (Yearly) | $49.99 | per year |
| ReadLock Premium (Yearly) | $69.99 | per year |


### SPSS File Viewer

[App page](https://appshunter.io/ios/app/spss-file-viewer/id6799989361)

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

**In-app purchases:** none


## Frequently asked questions

### Is ReadLock free?

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

### Is SPSS File Viewer free?

SPSS File Viewer is free to download, with no in-app purchases.

### Do ReadLock or SPSS File Viewer have ads?

Neither ReadLock nor SPSS File Viewer shows ads.

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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.*