TechFX Exchange vs tack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Foreign currency reception
- Currency conversion to BRL
- Service for tech professionals
- International payment handling
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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.
tack
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Tack helps you figure out how much you need to live the month and see, day by day, whether you're on track. You start by setting up the life you want to live: a monthly goal, fixed costs (rent, internet), subscriptions, and how much you set aside for irregular expenses like clothes, gifts, repairs. Tack does the math and splits what's left across the days. Then just log it. The app opens straight to the screen where you type the amount, pick a tag, and you're done. 3 seconds. No forced categorization, no onboarding. As you log, the app shows you the course: • today: are you on pace, or already over? • this week: how much is left for the days ahead? • this month: what's the trend? Three screens. Diary to log, Trend to see, Planning to define. That's it. Logging manually sounds like a chore. That's the point. Each expense you type is a moment of awareness — you stop, you see, you log it. Strung together, these small acts become understanding of your financial life. And understanding is what gives you real control. Not alarms. Most finance apps try to do everything for you: import from your bank, categorize, alert, nudge. Tack does the opposite. You're the one steering. Privacy: Everything stays on your iPhone. No account, no login, no server, no analytics, no tracking. Your financial data never leaves the device. Small tacks, on course.
Screenshots
Verdict
The clearest difference is price: TechFX Exchange at Free against tack's $4.99. TechFX Exchange also leads on iOS requirement (15.1 vs 18.0). tack's advantage is update cadence (daily vs every 10 days). On ads, in-app purchases 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
TechFX Exchange is free to download; tack costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
TechFX Exchange ships an update every 10 days, tack daily. The most recent releases landed on October 20, 2026 and October 15, 2026 respectively.
| Parameter | TechFX Exchange | tack |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 4.4 (7 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Every 10 days | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 18.0 |
| Further details — not scored | ||
| Size | 54 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | TechFX | Rodrigo Corbelli |
In-app purchases
TechFX Exchange
No in-app purchases
tack
No in-app purchases









