Comparison

TechFX Exchange vs Simple Invoice

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

TechFX Exchange

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
Read full description

Somos uma operação de câmbio dedicada a atender profissionais da área tech que prestam serviços para o exterior. Ajudamos nos recebimentos em moeda estrangeira e na conversão para reais.

About

Simple Invoice

Features
Read full description

Create professional receipts quickly and effortlessly. Simple Invoice is designed for freelancers, self employed professionals, contractors, and small businesses that need an easy way to create professional receipts. Generate, save, and share PDF receipts in just a few taps. Your data stays private in your own iCloud account, keeping your receipts secure and automatically synchronized across your Apple devices. Features • Create receipts in seconds • Generate high quality PDF files • Share receipts with ease • Keep your receipts organized • Clean and intuitive interface • Secure iCloud synchronization • Sign in with Apple Premium Unlock unlimited receipts and enjoy exclusive features with a Premium subscription. Start with a free trial and subscribe only if Simple Invoice is the right fit for your business. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

TechFX Exchange4 screens
Simple Invoice4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
TechFX Exchange versus Simple Invoice: the parameters behind the verdict, then further details
ParameterTechFX ExchangeSimple Invoice
PriceFreeFree
Rating4.4 (7 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 10 daysEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 — better18.6
Further details — not scored
Size54 MB4 MB
Age rating4+4+
DeveloperTechFXFagner Caetano Silva

In-app purchases

None

TechFX Exchange

No in-app purchases

2 purchases

Simple Invoice

Subscriptions2
  • Simple Invoice Monthly7 Days trial$1.991 Month
  • Simple Invoice Yearly7 Days trial$14.991 Year

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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