# Stamp Bookkeeping vs Secret Diary

The clearest difference is price: Stamp Bookkeeping at Free against Secret Diary's $0.99. Stamp Bookkeeping also leads on update cadence (every 5 days vs monthly). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Stamp Bookkeeping is free to download; Secret Diary costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Stamp Bookkeeping ships an update every 5 days, Secret Diary monthly. The most recent releases landed on October 18, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Stamp Bookkeeping | Secret Diary |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Monthly |
| Monetization | — | Paid |
| Size | 28 MB | 8 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [CELLBORN LIMITED LIABILITY COMPANY](https://appshunter.io/developer/1791037056) | [景 刘](https://appshunter.io/developer/1887860900) |

## What reviewers say

### Stamp Bookkeeping

[App page](https://appshunter.io/ios/app/stamp-bookkeeping/id6740690214)

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

**In-app purchases:** none


### Secret Diary

[App page](https://appshunter.io/ios/app/secret-diary-notebook/id6761122036)

A secure, offline digital journal that prioritizes your privacy. Store thoughts locally with robust encryption and multimedia support. Export entries as PDFs for complete data ownership.

**Highlights:** True offline functionality, Local encryption with Face ID/Touch ID, Multimedia entries with multiple images, Calendar heatmap for recording frequency, Gentle, customizable writing reminders, One-click encrypted PDF export

**In-app purchases:** none


## Frequently asked questions

### Is Stamp Bookkeeping free?

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

### Is Secret Diary free?

Secret Diary costs $0.99, with no in-app purchases.

### Do Stamp Bookkeeping or Secret Diary have ads?

Neither Stamp Bookkeeping nor Secret Diary shows ads.

### Which is updated more often, Stamp Bookkeeping or Secret Diary?

Stamp Bookkeeping ships an update every 5 days, and Secret Diary monthly. Most recently, Stamp Bookkeeping was updated on October 18, 2026 and Secret Diary on October 24, 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.*