# Evaluate vs Keven.ai

The clearest difference is update cadence: Keven.ai at every 6 weeks against Evaluate's every 11 months. Evaluate's advantage is iOS requirement (9.0 vs 14.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Evaluate sells 1 one-off in-app purchase and Keven.ai sells 1 in-app purchase, starting at $99.00 per month. Whichever you choose, the download price is not the number that matters.

Evaluate ships an update every 11 months, Keven.ai every 6 weeks. The most recent releases landed on September 26, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Evaluate | Keven.ai |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (11 ratings)](https://appshunter.io/ios/app/evaluate/id421701498/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 44.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 16 MB | 26 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Aaron Rennow](https://appshunter.io/developer/382464366) | [Keven, Inc.](https://appshunter.io/developer/1700375826) |

## What reviewers say

### Evaluate

[App page](https://appshunter.io/ios/app/evaluate/id421701498)

This app allows users to input and calculate complex mathematical expressions using a familiar keyboard interface. It provides a scrolling history for easy access to previous calculations, making it a handy tool for solving advanced formulas.

**Highlights:** Complex expression calculation, User-friendly keyboard input, Scrolling calculation history, Advanced formula computation, Clean interface

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-Free Upgrade | $0.99 | one-time |


### Keven.ai

[App page](https://appshunter.io/ios/app/kevenai/id6456264255)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $99.00 | per month |


## Frequently asked questions

### Is Evaluate free?

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

### Is Keven.ai free?

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

### Do Evaluate or Keven.ai have ads?

Neither Evaluate nor Keven.ai shows ads.

### Which is updated more often, Evaluate or Keven.ai?

Evaluate ships an update every 11 months, and Keven.ai every 6 weeks. Most recently, Evaluate was updated on September 26, 2026 and Keven.ai on October 10, 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.*