# 72投 vs Basic Calculations

The clearest difference is in-app purchases: 72投 at none against Basic Calculations's 5. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Basic Calculations sells 5 in-app purchases, starting at $0.99 per month. 72投 asks for nothing beyond the download.

72投 ships an update every 2 weeks, Basic Calculations every 3 weeks. The most recent releases landed on September 13, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | 72投 | Basic Calculations |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Size | 133 MB | 26 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Kaiyu Trade Co., Ltd.](https://appshunter.io/developer/1392907300) | [涛 吴](https://appshunter.io/developer/1499197098) |

## What reviewers say

### 72投

[App page](https://appshunter.io/ios/app/72/id1449228373)

**In-app purchases:** none


### Basic Calculations

[App page](https://appshunter.io/ios/app/basic-calculations/id1499197099)

**Features:** Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scan all functions: 1 month | $0.99 | per month |
| Scan all functions: 6 months | $1.99 | per 6 months |
| Scan all functions: 1 year | $2.99 | per year |
| Full calc | Free | one-time |
| Scan full version | $4.99 | one-time |


## Frequently asked questions

### Is 72投 free?

72投 is free to download, with no in-app purchases.

### Is Basic Calculations free?

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

### Do 72投 or Basic Calculations have ads?

Neither 72投 nor Basic Calculations shows ads.

### Which is updated more often, 72投 or Basic Calculations?

72投 ships an update every 2 weeks, and Basic Calculations every 3 weeks. Most recently, 72投 was updated on September 13, 2026 and Basic Calculations on September 21, 2026.

---

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