# Pi vs e

The clearest difference is update cadence: e at every 2 months against Pi's every 6 months. Pi's advantage is iOS requirement (13.0 vs 15.5). On price, ads, in-app purchases and device support there is nothing between them.

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

Pi ships an update every 6 months, e every 2 months. Both last shipped on October 10, 2026.

## The numbers

| Metric | Pi | e |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/e-motum/id1638685360/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 8.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 1 MB | 58 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [JANG SAS](https://appshunter.io/developer/1213314553) | [E-MOTUM](https://appshunter.io/developer/1638685362) |

## What reviewers say

### Pi

[App page](https://appshunter.io/ios/app/pi-cube/id1588638658)

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

**In-app purchases:** none


### e

[App page](https://appshunter.io/ios/app/e-motum/id1638685360)

Find and manage electric vehicle charging stations. View real-time availability, start/stop sessions via QR code or manually, and monitor charging progress. Pay securely with a credit card and review your charging history.

**Highlights:** Real-time charging station availability, QR code or manual session start/stop, Live charging session monitoring, Credit card payment processing, Charging history and statistics, Electric vehicle registration

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

**In-app purchases:** none


## Frequently asked questions

### Is Pi free?

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

### Is e free?

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

### Do Pi or e have ads?

Neither Pi nor e shows ads.

### Which is updated more often, Pi or e?

Pi ships an update every 6 months, and e every 2 months. Most recently, Pi was updated on October 10, 2026 and e 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.*