# Let's Smile 6 vs Back 2 Basic

The clearest difference is price: Let's Smile 6 at Free against Back 2 Basic's $1.99. Let's Smile 6 also leads on iOS requirement (10.0 vs 14.0). Back 2 Basic's advantage is update cadence (every 4 weeks vs every 19 months). On ads, in-app purchases and device support there is nothing between them.

Let's Smile 6 is free to download; Back 2 Basic costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Let's Smile 6 ships an update every 19 months, Back 2 Basic every 4 weeks. The most recent releases landed on October 5, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Let's Smile 6 | Back 2 Basic |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 4 weeks** |
| Size | 828 MB | 346 MB |
| Requires iOS | **10.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [e-future Co., Ltd.](https://appshunter.io/developer/522346678) | [Tyler Strickland](https://appshunter.io/developer/1803985585) |

## What reviewers say

### Let's Smile 6

[App page](https://appshunter.io/ios/app/lets-smile-6/id1566810842)

**Features:** macOS Compatibility

**In-app purchases:** none


### Back 2 Basic

[App page](https://appshunter.io/ios/app/back-2-basic/id6743686280)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Let's Smile 6 free?

Let's Smile 6 is free to download, with no in-app purchases.

### Is Back 2 Basic free?

Back 2 Basic costs $1.99, with no in-app purchases.

### Do Let's Smile 6 or Back 2 Basic have ads?

Neither Let's Smile 6 nor Back 2 Basic shows ads.

### Which is updated more often, Let's Smile 6 or Back 2 Basic?

Let's Smile 6 ships an update every 19 months, and Back 2 Basic every 4 weeks. Most recently, Let's Smile 6 was updated on October 5, 2026 and Back 2 Basic on October 16, 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.*