# NumberPlace Lv999 vs ECHO LOOP

The clearest difference is in-app purchases: ECHO LOOP at none against NumberPlace Lv999's 4. ECHO LOOP also leads on update cadence (every 3 days vs every 3 months). NumberPlace Lv999's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. NumberPlace Lv999 sells 4 one-off in-app purchases. ECHO LOOP asks for nothing beyond the download.

NumberPlace Lv999 ships an update every 3 months, ECHO LOOP every 3 days. The most recent releases landed on October 13, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | NumberPlace Lv999 | ECHO LOOP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (14 ratings)](https://appshunter.io/ios/app/numberplace-lv999/id769663884/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 64.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 17 MB | 5 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Seventh rank Inc.](https://appshunter.io/developer/408148416) | [RYO TAKENO](https://appshunter.io/developer/6791367948) |

## What reviewers say

### NumberPlace Lv999

[App page](https://appshunter.io/ios/app/numberplace-lv999/id769663884)

This classic puzzle game offers 999 unique levels of Number Place challenges, from easy to super difficult. It includes helpful features like a check sheet for noting numbers and a history function for corrections. Enjoy the game with background music and low battery consumption.

**Highlights:** 999 unique puzzles, Multiple difficulty levels, Check sheet for notes, Correction history function, Background music, Low battery consumption

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Master Level Pack No.1 | $1.99 | one-time |
| Master Level Pack No.2 | $1.99 | one-time |
| Master Level Pack No.3 | $1.99 | one-time |
| Master Level Pack No.4 | $1.99 | one-time |


### ECHO LOOP

[App page](https://appshunter.io/ios/app/echo-loop-time-loop-puzzle/id6791367946)

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

**In-app purchases:** none


## Frequently asked questions

### Is NumberPlace Lv999 free?

NumberPlace Lv999 is free to download, with in-app purchases available.

### Is ECHO LOOP free?

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

### Do NumberPlace Lv999 or ECHO LOOP have ads?

Both NumberPlace Lv999 and ECHO LOOP show ads.

### Which is updated more often, NumberPlace Lv999 or ECHO LOOP?

NumberPlace Lv999 ships an update every 3 months, and ECHO LOOP every 3 days. Most recently, NumberPlace Lv999 was updated on October 13, 2026 and ECHO LOOP on October 3, 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.*