# TechFX Exchange vs Simple Invoice

The clearest difference is in-app purchases: TechFX Exchange at none against Simple Invoice's 2. TechFX Exchange also leads on iOS requirement (15.1 vs 18.6). Simple Invoice's advantage is update cadence (every 4 days vs every 10 days). On price, ads and device support there is nothing between them.

Both are free to download. Simple Invoice sells 2 in-app purchases, starting at $1.99 per month. TechFX Exchange asks for nothing beyond the download.

TechFX Exchange ships an update every 10 days, Simple Invoice every 4 days. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | TechFX Exchange | Simple Invoice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (7 ratings)](https://appshunter.io/ios/app/techfx-exchange/id6451122880/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 4 days** |
| Monetization | Free | — |
| Size | 54 MB | 4 MB |
| Requires iOS | **15.1** | 18.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TechFX](https://appshunter.io/developer/1696723298) | [Fagner Caetano Silva](https://appshunter.io/developer/6783947893) |

## What reviewers say

### TechFX Exchange

[App page](https://appshunter.io/ios/app/techfx-exchange/id6451122880)

This app facilitates foreign currency exchange for tech professionals working with international clients. It simplifies receiving payments in foreign currencies and converting them to Brazilian Reais.

**Highlights:** Foreign currency reception, Currency conversion to BRL, Service for tech professionals, International payment handling

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

**In-app purchases:** none


### Simple Invoice

[App page](https://appshunter.io/ios/app/simple-invoice-receipt-maker/id6798286777)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Simple Invoice Monthly | $1.99 | per month |
| Simple Invoice Yearly | $14.99 | per year |


## Frequently asked questions

### Is TechFX Exchange free?

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

### Is Simple Invoice free?

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

### Do TechFX Exchange or Simple Invoice have ads?

Neither TechFX Exchange nor Simple Invoice shows ads.

### Which is updated more often, TechFX Exchange or Simple Invoice?

TechFX Exchange ships an update every 10 days, and Simple Invoice every 4 days. Most recently, TechFX Exchange was updated on October 3, 2026 and Simple Invoice on October 7, 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.*