# 真好算 vs DoBuff

The clearest difference is review sentiment: DoBuff at 100% against 真好算's 67%. DoBuff also leads on update cadence (weekly vs monthly) and ratings volume (39 vs 3). 真好算's advantage is monetization model (free vs free with in-app purchases) and rating (5.0 vs 4.8). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 真好算 sells 1 one-off in-app purchase and DoBuff sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

真好算 holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: DoBuff has 39 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 67% of 真好算's written reviews are positive against 100% of DoBuff's, so the app with the better star average is not the one people write more warmly about.

真好算 ships an update monthly, DoBuff weekly. The most recent releases landed on September 23, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | 真好算 | DoBuff |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/id6449284621/reviews)** | [4.8 (39 ratings)](https://appshunter.io/ios/app/dobuff-time-management/id6740776035/reviews) |
| Number of ratings | 3 | **39** |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 4 MB | 20 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [滚宁 林](https://appshunter.io/developer/1688525702) | [宇 李](https://appshunter.io/developer/1552609869) |

## What reviewers say

### 真好算

[App page](https://appshunter.io/ios/app/id6449284621)

A user-friendly calculator app designed for everyday use, featuring a clean interface and one-handed operation. It offers quick access to history, unit conversions, currency exchange, and more, all without ads.

**Highlights:** One-handed operation, Recent calculation history display, Unit conversion tools, Currency exchange rates, Amount to Chinese characters, BMI calculator, Ad-free experience

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 真好算 PRO | $5.99 | one-time |


### DoBuff

[App page](https://appshunter.io/ios/app/dobuff-time-management/id6740776035)

Enhance your reminders and calendar with powerful tools for time management, progress tracking, and goal setting. Visualize your tasks on a timeline, create unique weekly and yearly plans, and utilize focus timers with progress bars. Gain insights with trend statistics and countdowns.

**Highlights:** Timeline view for tasks, Weekly, monthly, and yearly planning, Focus timer with progress bar, Trend statistics and heatmaps, Countdown timers, Calendar integration, Widgets

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月会员 | $0.99 | per month |
| 年会员 | $2.99 | per year |
| 永久会员 | $6.99 | one-time |


## Frequently asked questions

### Is 真好算 free?

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

### Is DoBuff free?

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

### Which has better reviews, 真好算 or DoBuff?

真好算 is rated higher. 真好算 averages 5.0 out of 5 from 3 ratings, while DoBuff averages 4.8 from 39 ratings.

### Do 真好算 or DoBuff have ads?

Neither 真好算 nor DoBuff shows ads.

### Which is updated more often, 真好算 or DoBuff?

真好算 ships an update monthly, and DoBuff weekly. Most recently, 真好算 was updated on September 23, 2026 and DoBuff on September 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*