# Delta vs 务实

The clearest difference is device support: Delta at 4 against 务实's 2. 务实's advantage is iOS requirement (9.0 vs 13.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Delta sells 3 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.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on August 19, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Delta | 务实 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (7 ratings)](https://appshunter.io/ios/app/delta-algorithms/id1436506800/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Freemium | — |
| Size | 5 MB | 32 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Groupe MINASTE](https://appshunter.io/developer/1378426984) | [程欣 朱](https://appshunter.io/developer/1808327732) |

## What reviewers say

### Delta

[App page](https://appshunter.io/ios/app/delta-algorithms/id1436506800)

This app helps users solve math problems by creating and executing algorithms. It offers tools for homework checking, test preparation, and creating custom quizzes. Users can save, share, and download algorithms via the cloud.

**Highlights:** Create algorithms with natural language, Execute algorithms to solve math problems, Create and download custom quizzes, Save and share algorithms, Cloud synchronization for algorithms

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donation 1 | $0.99 | one-time |
| Donation 2 | $2.99 | one-time |
| Donation 3 | $4.99 | 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 Delta free?

Delta 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 Delta or 务实 have ads?

Neither Delta nor 务实 shows ads.

### Which is updated more often, Delta or 务实?

Delta ships an update monthly, and 务实 monthly. Most recently, Delta was updated on August 19, 2026 and 务实 on September 15, 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.*