# Functions and integrals vs 务实

The clearest difference is update cadence: Functions and integrals at every 5 days against 务实's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Functions and integrals sells 2 one-off in-app purchases and 务实 sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Functions and integrals ships an update every 5 days, 务实 monthly. The most recent releases landed on September 28, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Functions and integrals | 务实 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 28 MB | 32 MB |
| Requires iOS | 9.0 | 9.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Maxime Haeyaert](https://appshunter.io/developer/1274130669) | [程欣 朱](https://appshunter.io/developer/1808327732) |

## What reviewers say

### Functions and integrals

[App page](https://appshunter.io/ios/app/functions-and-integrals/id1331081431)

This app quickly resolves integrals using a powerful algorithm. It calculates integrals of functions and composite functions, providing detailed steps for easy exercise solving and calculation checking. Simply input your function and let the app handle the rest.

**Highlights:** Integral calculation, Composite function integration, Detailed calculation steps, Quick problem solving, Easy function input

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advertising | $0.99 | one-time |
| Details and Formulas | $1.99 | one-time |


### 务实

[App page](https://appshunter.io/ios/app/id1474765920)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 12务实币 | $1.99 | one-time |
| 25务实币 | $3.99 | one-time |
| 40务实币 | $5.99 | one-time |
| 50务实币 | $7.99 | one-time |


## Frequently asked questions

### Is Functions and integrals free?

Functions and integrals is free to download, with in-app purchases available.

### Is 务实 free?

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

### Do Functions and integrals or 务实 have ads?

Neither Functions and integrals nor 务实 shows ads.

### Which is updated more often, Functions and integrals or 务实?

Functions and integrals ships an update every 5 days, and 务实 monthly. Most recently, Functions and integrals was updated on September 28, 2026 and 务实 on October 19, 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.*