# SMS Instant vs OKJ Flex

The clearest difference is in-app purchases: OKJ Flex at none against SMS Instant's 2. OKJ Flex also leads on ads (none vs shown). SMS Instant's advantage is iOS requirement (12.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. SMS Instant sells 2 in-app purchases, starting at $1.99 per month. OKJ Flex asks for nothing beyond the download.

## The numbers

| Metric | SMS Instant | OKJ Flex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (62 ratings)](https://appshunter.io/ios/app/sms-instant/id1504179579/reviews)** | — |
| Number of ratings | **62** | — |
| Positive reviews | 11.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 68 MB | 8 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Hayato Shimizu](https://appshunter.io/developer/1207195348) | [Samuel Boyd](https://appshunter.io/developer/6816987477) |

## What reviewers say

### SMS Instant

[App page](https://appshunter.io/ios/app/sms-instant/id1504179579)

Receive SMS messages anonymously with temporary phone numbers. Protect your private number by using disposable digits for service registrations and urgent SMS needs. Get a new number each time you open the app.

**Highlights:** Disposable phone numbers, Receive registration messages, Anonymous SMS reception, No registration required, Secure private number protection, New number on each launch

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Monthly plan) | $1.99 | per month |
| Premium (Buying out) | $19.99 | one-time |


### OKJ Flex

[App page](https://appshunter.io/ios/app/okj-flex/id6824920724)

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

**In-app purchases:** none


## Frequently asked questions

### Is SMS Instant free?

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

### Is OKJ Flex free?

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

### Do SMS Instant or OKJ Flex have ads?

SMS Instant shows ads; OKJ Flex does not.

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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.*