# Let's Stack AR! vs BackSlap

The clearest difference is price: BackSlap at Free against Let's Stack AR!'s $0.99. BackSlap also leads on review sentiment (84% vs 56%) and update cadence (every 10 days vs every 2 months). Let's Stack AR!'s advantage is in-app purchases (none vs 1) and ads (none vs shown). On rating, device support and iOS requirement there is nothing between them.

BackSlap is free to download; Let's Stack AR! costs $0.99 up front. BackSlap sells 1 one-off in-app purchase. Let's Stack AR! asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.5 for Let's Stack AR! against 4.6 for BackSlap. Both are backed by a comparable volume of ratings — 19 and 71 respectively. Written reviews are what separate them: 56% of Let's Stack AR!'s written reviews are positive against 84% of BackSlap's.

Let's Stack AR! ships an update every 2 months, BackSlap every 10 days. The most recent releases landed on September 25, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Let's Stack AR! | BackSlap |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [4.5 (19 ratings)](https://appshunter.io/ios/app/lets-stack-ar/id1265773817/reviews) | **[4.6 (71 ratings)](https://appshunter.io/ios/app/backslap/id6737307268/reviews)** |
| Number of ratings | 19 | **71** |
| Positive reviews | 56.3% of reviews | **84.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 77 MB | 319 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Hendri Soerianto](https://appshunter.io/developer/1107831294) | [Dotoyou Games](https://appshunter.io/developer/1480148667) |

## What reviewers say

### Let's Stack AR!

[App page](https://appshunter.io/ios/app/lets-stack-ar/id1265773817)

Build the tallest tower possible using augmented reality. Place blocks in your environment and see how high you can stack them before they tumble. Compare your creations to real-world objects.

**Highlights:** Augmented reality block stacking, Build the tallest tower, Place blocks in real-world environments, Compare tower height to real objects, Awarded Apple's Game of the Day

**In-app purchases:** none


### BackSlap

[App page](https://appshunter.io/ios/app/backslap/id6737307268)

A quirky music rhythm game with simple one-finger controls. Enjoy endless fun with over 80 free songs featuring humorous themes like back slapping and panda karaoke. Tap to the beat and aim for high scores based on your accuracy.

**Highlights:** One-finger controls, Over 80 free songs, Quirky themes, Rhythm-based tapping, Score ranking based on accuracy

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Slap Master | $7.99 | one-time |

**What reviewers like**

- 🎨 Cute and appealing art style
- 🎶 Great music and rhythm
- 👍 Easy to learn and play
- 💡 Creative concept (massaging/rhythm game)
- ✨ Smooth gameplay and visuals

**What reviewers complain about**

- 😩 Songs can be too long
- 😴 Gameplay can be monotonous/hypnotic
- ✋ Gameplay can cause hand cramps
- 📉 Lack of challenge in higher difficulties
- 🔊 Audio issues (failure/no music)

**Reported bugs**

- Audio failure
- Crashing when trying to watch ads
- Scores not updating after achieving SSS
- No music playing
- Imported songs not playable

**Requested features**

- More animal series or new songs
- Tasks or events for rewards
- Customizable button skins
- Option for dual-key (left/right)
- More varied melodies and譜面 (charts)


## Frequently asked questions

### Is Let's Stack AR! free?

Let's Stack AR! costs $0.99, with no in-app purchases.

### Is BackSlap free?

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

### Which has better reviews, Let's Stack AR! or BackSlap?

BackSlap is rated higher. Let's Stack AR! averages 4.5 out of 5 from 19 ratings, while BackSlap averages 4.6 from 71 ratings.

### Do Let's Stack AR! or BackSlap have ads?

BackSlap shows ads; Let's Stack AR! does not.

### Which is updated more often, Let's Stack AR! or BackSlap?

Let's Stack AR! ships an update every 2 months, and BackSlap every 10 days. Most recently, Let's Stack AR! was updated on September 25, 2026 and BackSlap on September 29, 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.*