# ISEC Lisboa vs e

ISEC Lisboa and e are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

ISEC Lisboa ships an update every 5 months, e every 3 months. The most recent releases landed on September 24, 2026 and May 18, 2026 respectively.

## The numbers

| Metric | ISEC Lisboa | e |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Size | 66 MB | 76 MB |
| Requires iOS | 15.0 | **14.2** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Digitalis Informática](https://appshunter.io/developer/1357689236) | [Codevision](https://appshunter.io/developer/906461429) |

## What reviewers say

### ISEC Lisboa

[App page](https://appshunter.io/ios/app/isec-lisboa/id1601220076)

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

**In-app purchases:** none


### e

[App page](https://appshunter.io/ios/app/e-schooling/id6475721400)

**In-app purchases:** none


## Frequently asked questions

### Is ISEC Lisboa free?

ISEC Lisboa is free to download, with no in-app purchases.

### Is e free?

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

### Do ISEC Lisboa or e have ads?

Neither ISEC Lisboa nor e shows ads.

### Which is updated more often, ISEC Lisboa or e?

ISEC Lisboa ships an update every 5 months, and e every 3 months. Most recently, ISEC Lisboa was updated on September 24, 2026 and e on May 18, 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.*