# Simplex Optima vs SAPO

The clearest difference is price: SAPO at Free against Simplex Optima's $2.99. Simplex Optima's advantage is in-app purchases (none vs 2) and update cadence (every 5 days vs fortnightly). On ads, device support and iOS requirement there is nothing between them.

SAPO is free to download; Simplex Optima costs $2.99 up front. SAPO sells 2 in-app purchases, starting at $2.99 per month. Simplex Optima asks for nothing beyond the download.

Simplex Optima ships an update every 5 days, SAPO fortnightly. The most recent releases landed on September 10, 2026 and July 6, 2026 respectively.

## The numbers

| Metric | Simplex Optima | SAPO |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 2 MB | 62 MB |
| Requires iOS | 13.3 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Konstantinos Ladiellis](https://appshunter.io/developer/1516103440) | [BIOMAXIMA INFORMACION Y EXPERIMENTACION CIENTIFICA SOCIEDAD LIMITADA](https://appshunter.io/developer/1794186533) |

## What reviewers say

### Simplex Optima

[App page](https://appshunter.io/ios/app/simplex-optima/id1667878232)

**Features:** Vision Pro support

**In-app purchases:** none


### SAPO

[App page](https://appshunter.io/ios/app/sapo-ai-statistical-assistant/id6741438601)

This app offers advanced statistical analysis tools for researchers and students. It includes guided test selection, modeling, data visualization, and an AI assistant for interpretation. Generate publication-ready reports and calculate sample sizes.

**Highlights:** Statistical Test Guidance, Advanced Modeling Tools, Integrated AI Assistant, Database Manager, Sample Size Calculator, Automatic PDF Reports, Data Visualization

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $2.99 | per month |
| Yearly subscription | $22.99 | per year |


## Frequently asked questions

### Is Simplex Optima free?

Simplex Optima costs $2.99, with no in-app purchases.

### Is SAPO free?

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

### Do Simplex Optima or SAPO have ads?

Neither Simplex Optima nor SAPO shows ads.

### Which is updated more often, Simplex Optima or SAPO?

Simplex Optima ships an update every 5 days, and SAPO fortnightly. Most recently, Simplex Optima was updated on September 10, 2026 and SAPO on July 6, 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.*