# 繳款小祕書 vs CostDiary

The clearest difference is rating: CostDiary at 3.0 against 繳款小祕書's 1.0. CostDiary also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 8 months). 繳款小祕書's advantage is in-app purchases (none vs 2). On price, review sentiment, ratings volume and device support there is nothing between them.

Both are free to download. CostDiary sells 2 in-app purchases, starting at $0.99 per month. 繳款小祕書 asks for nothing beyond the download.

CostDiary holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 62% of 繳款小祕書's written reviews are positive against 68% of CostDiary's.

繳款小祕書 ships an update every 8 months, CostDiary every 3 weeks. The most recent releases landed on August 18, 2026 and August 17, 2026 respectively.

## The numbers

| Metric | 繳款小祕書 | CostDiary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/id597789666/reviews) | **[3.0 (1 ratings)](https://appshunter.io/ios/app/costdiary/id1055571460/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 61.5% of reviews | **68.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Monetization | — | Freemium |
| Size | 26 MB | 108 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Webi & Neti Internet Services Inc.](https://appshunter.io/developer/307195731) | [JiunJiue Liou](https://appshunter.io/developer/508043293) |

## What reviewers say

### 繳款小祕書

[App page](https://appshunter.io/ios/app/id597789666)

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

**In-app purchases:** none


### CostDiary

[App page](https://appshunter.io/ios/app/costdiary/id1055571460)

Track daily expenses and record life events with text and stickers. Visualize spending with charts, manage budgets, and secure your data with password protection and iCloud backup. Supports multiple accounts and currencies.

**Highlights:** Daily expense tracking, Diary/journal with stickers, Spending visualization (charts), Budget management, Multi-account and multi-currency support, iCloud data backup, Password protection

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO plan (Monthly) | $0.99 | per month |
| PRO plan (Yearly) | $7.99 | per year |


## Frequently asked questions

### Is 繳款小祕書 free?

繳款小祕書 is free to download, with no in-app purchases.

### Is CostDiary free?

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

### Which has better reviews, 繳款小祕書 or CostDiary?

CostDiary is rated higher. 繳款小祕書 averages 1.0 out of 5 from 1 ratings, while CostDiary averages 3.0 from 1 ratings.

### Do 繳款小祕書 or CostDiary have ads?

繳款小祕書 shows ads; CostDiary does not.

### Which is updated more often, 繳款小祕書 or CostDiary?

繳款小祕書 ships an update every 8 months, and CostDiary every 3 weeks. Most recently, 繳款小祕書 was updated on August 18, 2026 and CostDiary on August 17, 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.*