# keep vs Number Crossing

The clearest difference is in-app purchases: keep at none against Number Crossing's 10. keep also leads on ads (none vs shown) and iOS requirement (12.0 vs 16.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Number Crossing sells 10 one-off in-app purchases. keep asks for nothing beyond the download.

keep ships an update every 2 days, Number Crossing every 4 days. The most recent releases landed on October 6, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | keep | Number Crossing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/number-crossing-match-numbers/id6755186331/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 4 days |
| Monetization | — | Free with in-app purchases |
| Size | 7 MB | 388 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [思航 赵](https://appshunter.io/developer/1624456697) | [Two Desperados](https://appshunter.io/developer/1081008475) |

## What reviewers say

### keep

[App page](https://appshunter.io/ios/app/keep-running/id6504623366)

**Features:** macOS Compatibility

**In-app purchases:** none


### Number Crossing

[App page](https://appshunter.io/ios/app/number-crossing-match-numbers/id6755186331)

Engage in a relaxing number matching puzzle game. Match pairs of identical numbers or numbers that sum to ten to clear the board. Progress through levels, unlock stories about cute characters, and train your brain with daily challenges.

**Highlights:** Match pairs of same numbers, Match pairs that add up to 10, Clear rows and the whole board, Merge number tiles, Unlock stories and pets, Daily quests, Offline mode

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coin Pack | $1.99 | one-time |
| Gem Offer | $1.99 | one-time |
| Buy One, Get One Free | $3.99 | one-time |
| Welcome Pack | $4.99 | one-time |
| Gem Offer | $4.99 | one-time |
| Limited Time Offer | $9.99 | one-time |
| Gem Offer | $9.99 | one-time |
| Gem Offer | $19.99 | one-time |
| Gem Offer | $39.99 | one-time |
| Gem Offer | $74.99 | one-time |


## Frequently asked questions

### Is keep free?

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

### Is Number Crossing free?

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

### Do keep or Number Crossing have ads?

Number Crossing shows ads; keep does not.

### Which is updated more often, keep or Number Crossing?

keep ships an update every 2 days, and Number Crossing every 4 days. Most recently, keep was updated on October 6, 2026 and Number Crossing 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.*