# Standard Deviation Calculate vs WiseTalker

The clearest difference is update cadence: WiseTalker at every 2 weeks against Standard Deviation Calculate's every 2 months. Standard Deviation Calculate's advantage is iOS requirement (11.0 vs 13). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Standard Deviation Calculate sells 1 one-off in-app purchase and WiseTalker sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Standard Deviation Calculate ships an update every 2 months, WiseTalker every 2 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Standard Deviation Calculate | WiseTalker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (3 ratings)](https://appshunter.io/ios/app/standard-deviation-calculate/id1600862053/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 5 MB | 257 MB |
| Requires iOS | **11.0** | 13 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [天一 邓](https://appshunter.io/developer/1056154014) | [Chengdu Zubuchuhu Education Technology Co., Ltd.](https://appshunter.io/developer/1725094424) |

## What reviewers say

### Standard Deviation Calculate

[App page](https://appshunter.io/ios/app/standard-deviation-calculate/id1600862053)

This utility calculates the standard deviation of a dataset, a key statistical measure of data dispersion. It helps understand how spread out values are from the average, with applications in science, industry, and finance.

**Highlights:** Calculate standard deviation, Measure data dispersion, Understand variation from mean, Applications in science and finance, Statistical analysis tool

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 标准差计算器专业版 | $2.99 | one-time |


### WiseTalker

[App page](https://appshunter.io/ios/app/wisetalker-ai-assistant/id6475762385)

**Features:** Apple Wallet

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 元 | $0.99 | one-time |
| 18 元 | $2.99 | one-time |
| 38 元 | $4.99 | one-time |
| 68 元 | $9.99 | one-time |
| 1个月会员 | $9.99 | one-time |
| 128 元 | $19.99 | one-time |
| 198 元 | $29.99 | one-time |
| 1个季度会员 | $34.99 | one-time |
| 328 元 | $49.99 | one-time |
| 1年会员 | $99.99 | one-time |


## Frequently asked questions

### Is Standard Deviation Calculate free?

Standard Deviation Calculate is free to download, with in-app purchases available.

### Is WiseTalker free?

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

### Do Standard Deviation Calculate or WiseTalker have ads?

Neither Standard Deviation Calculate nor WiseTalker shows ads.

### Which is updated more often, Standard Deviation Calculate or WiseTalker?

Standard Deviation Calculate ships an update every 2 months, and WiseTalker every 2 weeks. Most recently, Standard Deviation Calculate was updated on November 3, 2026 and WiseTalker on November 4, 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.*