# Tranzy vs Voltage

The clearest difference is in-app purchases: Tranzy at none against Voltage's 3. Tranzy also leads on iOS requirement (15.1 vs 27.0). Voltage's advantage is update cadence (weekly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Voltage sells 3 in-app purchases, starting at $4.99 per month. Tranzy asks for nothing beyond the download.

Tranzy ships an update every 2 months, Voltage weekly. The most recent releases landed on October 16, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Tranzy | Voltage |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | — |
| Size | 43 MB | 17 MB |
| Requires iOS | **15.1** | 27.0 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [TRANZY AI S.R.L.](https://appshunter.io/developer/1551346400) | [Nicolas Rios](https://appshunter.io/developer/1519523163) |

## What reviewers say

### Tranzy

[App page](https://appshunter.io/ios/app/tranzy/id1492365417)

Navigate your city with real-time bus and tram information. Find nearby stations, get accurate arrival times, and discover optimal routes. Stay informed about traffic alerts and vehicle locations for a smoother commute.

**Highlights:** Real-time route updates, Nearby station locator, Accurate arrival times, Optimal route planning, Traffic alerts, Vehicle location tracking, Bike rental station info

**Features:** Vision Pro support

**In-app purchases:** none


### Voltage

[App page](https://appshunter.io/ios/app/voltage-ev-charging-map/id6757288363)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TesBuddy Monthly | $4.99 | per month |
| TesBuddy Yearly | $39.99 | per year |
| TeslaBuddy Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is Tranzy free?

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

### Is Voltage free?

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

### Do Tranzy or Voltage have ads?

Neither Tranzy nor Voltage shows ads.

### Which is updated more often, Tranzy or Voltage?

Tranzy ships an update every 2 months, and Voltage weekly. Most recently, Tranzy was updated on October 16, 2026 and Voltage on October 11, 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.*