# PowerFlex vs Caltech

The clearest difference is ratings volume: PowerFlex at 5.2K against Caltech's 1. PowerFlex also leads on chart position (#150 vs unranked) and iOS requirement (15.1 vs 17.0). Caltech's advantage is rating (5.0 vs 4.8). On price, update cadence, 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.

Caltech holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: PowerFlex has 5.2K ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 24, 2026 and June 23, 2026 respectively.

## The numbers

| Metric | PowerFlex | Caltech |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (5.2K ratings)](https://appshunter.io/ios/app/powerflex/id1331137726/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/caltech/id1462285760/reviews)** |
| Number of ratings | **5.2K** | 1 |
| Positive reviews | 20.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free | Free |
| Best chart rank | **#150** | — |
| Size | 61 MB | 31 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [PowerFlex Systems, LLC](https://appshunter.io/developer/1331137725) | [cntxts Inc](https://appshunter.io/developer/1048931707) |

## What reviewers say

### PowerFlex

[App page](https://appshunter.io/ios/app/powerflex/id1331137726)

**Currently charting:** #150 Top Free · Navigation (US App Store)

Easily charge your electric vehicle by locating nearby stations, initiating charging sessions, and monitoring your progress. Optimize your charging to meet your energy demands and benefit the power grid.

**Highlights:** Locate PowerFlex stations, Start charging sessions, Monitor charge session data, Specify energy demand, Grid-friendly charging

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Convenient charging
- 👍 Simple interface
- 🚀 Fast charging
- 💡 Refundable deposit
- 👍 Easy to use

**What reviewers complain about**

- 🐛 Buggy app
- 🔒 Privacy concerns
- 💰 Confusing pricing
- 👎 Unintuitive UI
- 🔍 Difficult to use

**Reported bugs**

- App crashes frequently
- Charging sessions fail to start
- Compatibility issues with newer devices
- Inaccurate charging estimates
- Inability to cancel charging sessions

**Requested features**

- Allow pay-as-you-go option
- Integrate with mobile wallets
- Provide better charging status updates
- Simplify charging process


### Caltech

[App page](https://appshunter.io/ios/app/caltech/id1462285760)

Navigate campus buildings with smart indoor maps, even without GPS. Find and get directions to campus news, events, and points of interest like restaurants and restrooms.

**Highlights:** Indoor smart maps, GPS-independent navigation, Campus news and events, Searchable points of interest, Zoom event viewing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PowerFlex free?

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

### Is Caltech free?

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

### Which has better reviews, PowerFlex or Caltech?

Caltech is rated higher. PowerFlex averages 4.8 out of 5 from 5.2K ratings, while Caltech averages 5.0 from 1 ratings.

### Do PowerFlex or Caltech have ads?

Neither PowerFlex nor Caltech shows ads.

### Which is updated more often, PowerFlex or Caltech?

PowerFlex ships an update monthly, and Caltech monthly. Most recently, PowerFlex was updated on September 24, 2026 and Caltech on June 23, 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.*