# TVA Energy Data vs MISO Mobile

The clearest difference is update cadence: MISO Mobile at monthly against TVA Energy Data's every 6 months. MISO Mobile also leads on ratings volume (27 vs 3). TVA Energy Data's advantage is iOS requirement (13.0 vs 17.6). On price, rating, review sentiment and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for TVA Energy Data against 5.0 for MISO Mobile. That said, the two scores are not equally well evidenced: MISO Mobile has 27 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

TVA Energy Data ships an update every 6 months, MISO Mobile monthly. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | TVA Energy Data | MISO Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/tva-energy-data/id1024744472/reviews)** | [5.0 (27 ratings)](https://appshunter.io/ios/app/miso-mobile/id1041467824/reviews) |
| Number of ratings | 3 | **27** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Monetization | Free | Free |
| Size | 26 MB | 58 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Tennessee Valley Authority](https://appshunter.io/developer/440331546) | [Midcontinent Independent System Operator, Inc.](https://appshunter.io/developer/1041467823) |

## What reviewers say

### TVA Energy Data

[App page](https://appshunter.io/ios/app/tva-energy-data/id1024744472)

Access near real-time and historical energy usage data, demand information, and power system alerts. This app requires authorized access and is designed for TVA's directly served customers needing on-the-go information.

**Highlights:** Near real-time energy data, Current day interval data, Month-to-date usage and demand, Historical energy and demand, Power system alerts, TVA key contacts

**Features:** macOS Compatibility

**In-app purchases:** none


### MISO Mobile

[App page](https://appshunter.io/ios/app/miso-mobile/id1041467824)

Visualize real-time energy market data and grid conditions. Monitor supply, demand, prices, and fuel mix 24/7 with instant system notifications.

**Highlights:** Real-time energy market visualization, 24/7 grid condition monitoring, Supply and demand tracking, Price monitoring, Fuel mix data, Real-time system notifications

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

**In-app purchases:** none


## Frequently asked questions

### Is TVA Energy Data free?

TVA Energy Data is free to download, with no in-app purchases.

### Is MISO Mobile free?

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

### Which has better reviews, TVA Energy Data or MISO Mobile?

TVA Energy Data is rated higher. TVA Energy Data averages 5.0 out of 5 from 3 ratings, while MISO Mobile averages 5.0 from 27 ratings.

### Do TVA Energy Data or MISO Mobile have ads?

Neither TVA Energy Data nor MISO Mobile shows ads.

### Which is updated more often, TVA Energy Data or MISO Mobile?

TVA Energy Data ships an update every 6 months, and MISO Mobile monthly. Most recently, TVA Energy Data was updated on November 1, 2026 and MISO Mobile on November 2, 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.*