# My Solar vs Fast Post

The clearest difference is price: Fast Post at Free against My Solar's $2.99. Fast Post also leads on in-app purchases (none vs 1) and iOS requirement (13.0 vs 16.0). My Solar's advantage is ads (none vs shown). On update cadence and device support there is nothing between them.

Fast Post is free to download; My Solar costs $2.99 up front. My Solar sells 1 one-off in-app purchase. Fast Post asks for nothing beyond the download.

My Solar ships an update every 6 weeks, Fast Post every 2 months. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | My Solar | Fast Post |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | 87.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 20 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Richard Levy](https://appshunter.io/developer/923424693) | [Craig Robertson](https://appshunter.io/developer/1291727825) |

## What reviewers say

### My Solar

[App page](https://appshunter.io/ios/app/my-solar/id1672866749)

Access real-time statistics for your home solar installation, including power generation, battery, and grid usage. View data via widgets, notifications, and Siri. Control charge/discharge settings and sync inverter time.

**Highlights:** Real-time solar generation stats, Home and lock screen widgets, Apple Watch complications, Siri integration, Battery and grid usage monitoring, Inverter charge/discharge control, Inverter clock synchronization

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Inverter Charge/Discharge | $2.99 | one-time |


### Fast Post

[App page](https://appshunter.io/ios/app/fast-post-post-office-finder/id6450653443)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is My Solar free?

My Solar costs $2.99, and also offers in-app purchases.

### Is Fast Post free?

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

### Do My Solar or Fast Post have ads?

Fast Post shows ads; My Solar does not.

### Which is updated more often, My Solar or Fast Post?

My Solar ships an update every 6 weeks, and Fast Post every 2 months. Most recently, My Solar was updated on November 3, 2026 and Fast Post on October 27, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*