# SEI by CIP vs Lexcalc Pro

The clearest difference is update cadence: Lexcalc Pro at every 3 days against SEI by CIP's every 3 months. SEI by CIP's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 18.6). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SEI by CIP ships an update every 3 months, Lexcalc Pro every 3 days. The most recent releases landed on September 27, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | SEI by CIP | Lexcalc Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Size | 10 MB | 18 MB |
| Requires iOS | **15.6** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [IBILL SRL SEMPLIFICATA](https://appshunter.io/developer/1458513076) | [SM SRL](https://appshunter.io/developer/1543694717) |

## What reviewers say

### SEI by CIP

[App page](https://appshunter.io/ios/app/sei-by-cip/id6717608815)

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

**In-app purchases:** none


### Lexcalc Pro

[App page](https://appshunter.io/ios/app/lexcalc-pro/id6764299701)

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

**In-app purchases:** none


## Frequently asked questions

### Is SEI by CIP free?

SEI by CIP is free to download, with no in-app purchases.

### Is Lexcalc Pro free?

Lexcalc Pro is free to download, with no in-app purchases.

### Do SEI by CIP or Lexcalc Pro have ads?

Neither SEI by CIP nor Lexcalc Pro shows ads.

### Which is updated more often, SEI by CIP or Lexcalc Pro?

SEI by CIP ships an update every 3 months, and Lexcalc Pro every 3 days. Most recently, SEI by CIP was updated on September 27, 2026 and Lexcalc Pro on October 8, 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.*