# NASTF vs CallStream Pro

The clearest difference is rating: CallStream Pro at 5.0 against NASTF's 3.3. CallStream Pro also leads on update cadence (weekly vs every 3 weeks). NASTF's advantage is in-app purchases (none vs 7) and ratings volume (7 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. CallStream Pro sells 7 in-app purchases, starting at $9.99 per month. NASTF asks for nothing beyond the download.

CallStream Pro holds the better App Store score, 5.0 against 3.3. That said, the two scores are not equally well evidenced: NASTF has 7 ratings behind it against 1, so its average is the more settled of the two.

NASTF ships an update every 3 weeks, CallStream Pro weekly. The most recent releases landed on October 25, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | NASTF | CallStream Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (7 ratings)](https://appshunter.io/ios/app/nastf/id6670183169/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/callstream-pro/id6793596999/reviews)** |
| Number of ratings | **7** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 39 MB | 59 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [NASTF](https://appshunter.io/developer/1765205510) | [TRADESTREAM MARKETING CORP](https://appshunter.io/developer/6776393714) |

## What reviewers say

### NASTF

[App page](https://appshunter.io/ios/app/nastf/id6670183169)

This app offers a secure multi-factor authentication solution for registered members. It provides enhanced account protection through push notifications and time-based one-time passcodes for login verification.

**Highlights:** Multi-factor authentication, Push notification approvals, Time-based one-time passcodes, Enhanced account security, Streamlined login process

**In-app purchases:** none


### CallStream Pro

[App page](https://appshunter.io/ios/app/callstream-pro/id6793596999)

This app acts as an AI receptionist for your business, answering calls and texts 24/7. It greets callers, answers questions, qualifies leads, books appointments, and provides summaries. You can manage conversations, step in when needed, and even use a live interpreter for calls in twelve languages.

**Highlights:** AI-powered call and text answering, 24/7 availability, Appointment booking, Conversation summaries, Live interpreter for 12 languages, Business number calling, Call forwarding

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Line | $9.99 | per month |
| Starter | $49.99 | per month |
| Business | $199.99 | per month |
| $50 wallet credit | $49.99 | one-time |
| $100 wallet credit | $99.99 | one-time |
| $200 wallet credit | $199.99 | one-time |
| $500 wallet credit | $499.99 | one-time |


## Frequently asked questions

### Is NASTF free?

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

### Is CallStream Pro free?

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

### Which has better reviews, NASTF or CallStream Pro?

CallStream Pro is rated higher. NASTF averages 3.3 out of 5 from 7 ratings, while CallStream Pro averages 5.0 from 1 ratings.

### Do NASTF or CallStream Pro have ads?

Neither NASTF nor CallStream Pro shows ads.

### Which is updated more often, NASTF or CallStream Pro?

NASTF ships an update every 3 weeks, and CallStream Pro weekly. Most recently, NASTF was updated on October 25, 2026 and CallStream Pro on October 16, 2026.

---

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