# Documents (MMS) vs StepLock

The clearest difference is in-app purchases: Documents (MMS) at none against StepLock's 5. Documents (MMS) also leads on iOS requirement (12.0 vs 18.1). StepLock's advantage is update cadence (every 3 weeks vs every 15 months). On price, ads and device support there is nothing between them.

Both are free to download. StepLock sells 5 in-app purchases, starting at $0.99 per month. Documents (MMS) asks for nothing beyond the download.

Documents (MMS) ships an update every 15 months, StepLock every 3 weeks. The most recent releases landed on October 25, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Documents (MMS) | StepLock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (4 ratings)](https://appshunter.io/ios/app/steplock-walk-to-unlock/id6753717313/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 3 weeks** |
| Monetization | — | Freemium |
| Size | 12 MB | 14 MB |
| Requires iOS | **12.0** | 18.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Inception B.V.](https://appshunter.io/developer/748458892) | [25Bugs GmbH](https://appshunter.io/developer/1826950537) |

## What reviewers say

### Documents (MMS)

[App page](https://appshunter.io/ios/app/documents-mms/id1514798918)

**In-app purchases:** none


### StepLock

[App page](https://appshunter.io/ios/app/steplock-walk-to-unlock/id6753717313)

This app encourages physical activity by locking distracting applications until you achieve your daily step goal. Customize your step targets and select which apps to restrict to reduce screen time and promote a more active lifestyle.

**Highlights:** Lock apps until step goal is reached, Set custom daily step goals, Reduce screen time, Boost focus, Promote active lifestyle

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $0.99 | per month |
| Premium Weekly | $0.99 | per 7 days |
| Premium | $2.99 | per year |
| Premium | $7.99 | per year |
| Premium | $24.99 | one-time |


## Frequently asked questions

### Is Documents (MMS) free?

Documents (MMS) is free to download, with no in-app purchases.

### Is StepLock free?

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

### Do Documents (MMS) or StepLock have ads?

Neither Documents (MMS) nor StepLock shows ads.

### Which is updated more often, Documents (MMS) or StepLock?

Documents (MMS) ships an update every 15 months, and StepLock every 3 weeks. Most recently, Documents (MMS) was updated on October 25, 2026 and StepLock 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.*