# Ampere Tech vs Self

The clearest difference is in-app purchases: Ampere Tech at none against Self's 3. Ampere Tech also leads on update cadence (every 3 weeks vs every 3 months) and iOS requirement (12.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Self sells 3 in-app purchases, starting at $3.99 per 7 days. Ampere Tech asks for nothing beyond the download.

Ampere Tech ships an update every 3 weeks, Self every 3 months. The most recent releases landed on October 11, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Ampere Tech | Self |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.2 (33 ratings)](https://appshunter.io/ios/app/ampere-tech/id1606105956/reviews)** | — |
| Number of ratings | **33** | — |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free | — |
| Size | 40 MB | 29 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ampere LLC](https://appshunter.io/developer/1606105958) | [Vike Digital Pty Ltd](https://appshunter.io/developer/1742926734) |

## What reviewers say

### Ampere Tech

[App page](https://appshunter.io/ios/app/ampere-tech/id1606105956)

Enhance the capabilities of smart home devices, including shower power and lighting systems. Register your products, join a membership program, and access additional features to optimize your connected home experience.

**Highlights:** Enhance smart device functionality, Control Shower Power, Control Dusk lighting, Product registration, Membership program access

**Features:** macOS Compatibility

**In-app purchases:** none


### Self

[App page](https://appshunter.io/ios/app/self-employed-invoice-tool/id6744658689)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $3.99 | per 7 days |
| Annual Access | $19.99 | per year |
| Lifetime Access | $49.99 | one-time |


## Frequently asked questions

### Is Ampere Tech free?

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

### Is Self free?

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

### Do Ampere Tech or Self have ads?

Neither Ampere Tech nor Self shows ads.

### Which is updated more often, Ampere Tech or Self?

Ampere Tech ships an update every 3 weeks, and Self every 3 months. Most recently, Ampere Tech was updated on October 11, 2026 and Self on September 30, 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.*