# Calculator Lock vs IntervalMate

The clearest difference is in-app purchases: IntervalMate at none against Calculator Lock's 2. IntervalMate also leads on update cadence (every 2 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Calculator Lock sells 2 in-app purchases, starting at $2.99 per 7 days. IntervalMate asks for nothing beyond the download.

Calculator Lock ships an update monthly, IntervalMate every 2 days. The most recent releases landed on October 25, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Calculator Lock | IntervalMate |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 2 days** |
| Size | 6 MB | 21 MB |
| Requires iOS | **18.2** | 18.4 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Pratik Kadam](https://appshunter.io/developer/1696967727) | [Mijin Kim](https://appshunter.io/developer/1717382242) |

## What reviewers say

### Calculator Lock

[App page](https://appshunter.io/ios/app/calculator-lock-private-vault/id6753980290)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calculator Lock Pro - Weekly | $2.99 | per 7 days |
| Calculator Lock Pro - Yearly | $29.99 | per year |


### IntervalMate

[App page](https://appshunter.io/ios/app/intervalmate/id6757841430)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Calculator Lock free?

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

### Is IntervalMate free?

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

### Do Calculator Lock or IntervalMate have ads?

Both Calculator Lock and IntervalMate show ads.

### Which is updated more often, Calculator Lock or IntervalMate?

Calculator Lock ships an update monthly, and IntervalMate every 2 days. Most recently, Calculator Lock was updated on October 25, 2026 and IntervalMate on October 10, 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.*