# Calculator Lock vs InnerChapters

The clearest difference is in-app purchases: InnerChapters at none against Calculator Lock's 7. InnerChapters also leads on ads (none vs shown) and update cadence (daily vs every 2 weeks). Calculator Lock's advantage is ratings volume (6.1K vs 1) and device support (3 vs 1). On price there is nothing between them.

Both are free to download. Calculator Lock sells 7 in-app purchases, starting at $1.99 per 7 days. InnerChapters asks for nothing beyond the download.

InnerChapters holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Calculator Lock has 6.1K ratings behind it against 1, so its average is the more settled of the two.

Calculator Lock ships an update every 2 weeks, InnerChapters daily. The most recent releases landed on October 17, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Calculator Lock | InnerChapters |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (6.1K ratings)](https://appshunter.io/ios/app/calculator-lock-secure-vault/id6446200267/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/innerchapters/id6468540033/reviews)** |
| Number of ratings | **6.1K** | 1 |
| Positive reviews | 74.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Daily** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 80 MB | 4 MB |
| Requires iOS | **13.0** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [ZipoApps](https://appshunter.io/developer/1671444635) | [John Palacios](https://appshunter.io/developer/974312661) |

## What reviewers say

### Calculator Lock

[App page](https://appshunter.io/ios/app/calculator-lock-secure-vault/id6446200267)

Securely hide your private photos, videos, contacts, and passwords behind a disguised calculator interface. Protect your sensitive files with a secret vault and access them only through the app's unique interface. Features include intruder selfies and cloud backups.

**Highlights:** Photo hiding, Video hiding, Contact hiding, Password manager, Disguise mode, Intruder selfie, Cloud backup

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calculator Lock Pro Weekly | $1.99 | per 7 days |
| Hide Photos & Videos | $4.99 | per month |
| Calculator Lock Pro Yearly | $14.99 | per year |
| Remove Ads | $3.99 | one-time |
| Calculator Lock (Remove Ads) | $3.99 | one-time |
| Calculator Lock Pro (Discount) | $14.99 | one-time |
| Calculator Lock Pro (Lifetime) | $29.99 | one-time |

**What reviewers like**

- 🔒 Hidden app
- 👍 Good features
- 👍 Simple and easy to use
- 🔒 Secure vault for photos, videos, and passwords

**What reviewers complain about**

- 🐛 Buggy (doesn't save downloaded videos, can't paste in notes)
- 🔍 App name not very discreet
- 💸 Too much advertising

**Reported bugs**

- Doesn't save downloaded videos to gallery
- Can't paste information in notes
- Intruder selfie feature not working
- App icon change not working

**Requested features**

- Ability to change app name
- Sync between devices
- Ability to paste information in notes


### InnerChapters

[App page](https://appshunter.io/ios/app/innerchapters/id6468540033)

This daily journaling app allows users to easily record their thoughts and experiences. Entries can be tagged with emojis for quick retrieval and the journal can be secured with a passcode for privacy. Search functionality includes emojis, dates, and text.

**Highlights:** Daily journaling, Emoji tagging for entries, Search by emoji, date, and text, Passcode protection, Simple interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calculator Lock free?

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

### Is InnerChapters free?

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

### Which has better reviews, Calculator Lock or InnerChapters?

InnerChapters is rated higher. Calculator Lock averages 4.6 out of 5 from 6.1K ratings, while InnerChapters averages 5.0 from 1 ratings.

### Do Calculator Lock or InnerChapters have ads?

Calculator Lock shows ads; InnerChapters does not.

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

Calculator Lock ships an update every 2 weeks, and InnerChapters daily. Most recently, Calculator Lock was updated on October 17, 2026 and InnerChapters on October 7, 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.*