# 计算器 vs 倒计时

The clearest difference is ratings volume: 计算器 at 829 against 倒计时's 1. 倒计时's advantage is rating (5.0 vs 4.7) and update cadence (every 3 weeks vs every 2 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. 计算器 sells 2 one-off in-app purchases and 倒计时 sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

倒计时 holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: 计算器 has 829 ratings behind it against 1, so its average is the more settled of the two.

计算器 ships an update every 2 months, 倒计时 every 3 weeks. The most recent releases landed on October 26, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 计算器 | 倒计时 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (829 ratings)](https://appshunter.io/ios/app/id1265739545/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/and/id6448464245/reviews)** |
| Number of ratings | **829** | 1 |
| Positive reviews | 35.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 110 MB | 34 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [清龙 李](https://appshunter.io/developer/1226266031) | [浩 陈](https://appshunter.io/developer/1680667246) |

## What reviewers say

### 计算器

[App page](https://appshunter.io/ios/app/id1265739545)

This comprehensive calculator app offers a wide range of tools, including basic and scientific calculations, currency conversion, loan and tax calculators, and unit conversions. It simplifies complex calculations and conversions with an intuitive interface and voice input support.

**Highlights:** Basic and scientific calculator with voice input, Real-time currency conversion for over 160 countries, Loan calculator for commercial, provident fund, and combined loans, Tax calculator for salary, year-end bonuses, and labor remuneration, Date and unit conversion tools, Number system conversion (binary, octal, decimal, hexadecimal)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 赞助去广告 | $3.99 | one-time |
| 赞助 | $14.99 | one-time |

**What reviewers like**

- 🚀 Efficient and fast
- 💡 Useful features
- 👍 Good user experience

**What reviewers complain about**

- 🐛 Bugs and glitches
- 🔍 Difficult to find ad close buttons
- 🔋 High ad frequency

**Reported bugs**

- Inaccurate real-time exchange rates
- Calculation errors for large numbers
- Sudden disappearance of split mode

**Requested features**

- Add option to disable ads for paid users
- Improve historical calculation record feature
- Add support for traditional Chinese language


### 倒计时

[App page](https://appshunter.io/ios/app/and/id6448464245)

This app helps you count down to important dates like anniversaries, birthdays, and holidays. Set reminders to never miss special moments and track your daily life with a built-in diary. It also features a community group for sharing experiences and reminders.

**Highlights:** Countdown to important dates, Set custom reminders, Track birthdays and anniversaries, Daily diary function, Built-in community group, Record special moments

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周会员 | $3.99 | per 7 days |
| 月会员 | $9.99 | per month |
| 年会员 | $39.99 | per year |


## Frequently asked questions

### Is 计算器 free?

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

### Is 倒计时 free?

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

### Which has better reviews, 计算器 or 倒计时?

倒计时 is rated higher. 计算器 averages 4.7 out of 5 from 829 ratings, while 倒计时 averages 5.0 from 1 ratings.

### Do 计算器 or 倒计时 have ads?

Both 计算器 and 倒计时 show ads.

### Which is updated more often, 计算器 or 倒计时?

计算器 ships an update every 2 months, and 倒计时 every 3 weeks. Most recently, 计算器 was updated on October 26, 2026 and 倒计时 on October 6, 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.*