# Down to Zero vs Nuts & Bolts Sort

The clearest difference is ads: Nuts & Bolts Sort at none against Down to Zero's shown. Nuts & Bolts Sort also leads on update cadence (every 4 days vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Down to Zero sells 1 one-off in-app purchase and Nuts & Bolts Sort sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Down to Zero ships an update every 3 months, Nuts & Bolts Sort every 4 days. The most recent releases landed on June 4, 2026 and May 19, 2026 respectively.

## The numbers

| Metric | Down to Zero | Nuts & Bolts Sort |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/down-to-zero/id952397806/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 92 MB | 260 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Henrique Silva](https://appshunter.io/developer/492945915) | [Tran Tien Thanh](https://appshunter.io/developer/1713107024) |

## What reviewers say

### Down to Zero

[App page](https://appshunter.io/ios/app/down-to-zero/id952397806)

An addictive brain teaser game designed to enhance your IQ and cognitive skills. Progress through increasing difficulty levels and unlock 10 ranks, offering endless replayability and a fun mental workout.

**Highlights:** Easy to learn gameplay, Fun and addictive mechanics, 10 ranks to level up, Endless replay value, Brain exercise, IQ improvement

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $0.99 | one-time |


### Nuts & Bolts Sort

[App page](https://appshunter.io/ios/app/nuts-and-bolts-sort/id6473832108)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| Starter Pack | $1.99 | one-time |
| Coin Pack 2 | $3.99 | one-time |
| Booster Pack | $3.99 | one-time |
| Special Offer | $4.99 | one-time |
| Mega Pack | $4.99 | one-time |
| Coin Pack 3 | $9.99 | one-time |
| Legendary Pack | $9.99 | one-time |
| Coin Pack 4 | $19.99 | one-time |
| Coin Pack 5 | $39.99 | one-time |


## Frequently asked questions

### Is Down to Zero free?

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

### Is Nuts & Bolts Sort free?

Nuts & Bolts Sort is free to download, with in-app purchases available.

### Do Down to Zero or Nuts & Bolts Sort have ads?

Down to Zero shows ads; Nuts & Bolts Sort does not.

### Which is updated more often, Down to Zero or Nuts & Bolts Sort?

Down to Zero ships an update every 3 months, and Nuts & Bolts Sort every 4 days. Most recently, Down to Zero was updated on June 4, 2026 and Nuts & Bolts Sort on May 19, 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.*