# 81 numbers ascend memory vs Depengder

The clearest difference is in-app purchases: 81 numbers ascend memory at none against Depengder's 8. 81 numbers ascend memory also leads on ads (none vs shown) and iOS requirement (8.0 vs 15.0). Depengder's advantage is update cadence (every 5 weeks vs every 13 months). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Depengder sells 8 one-off in-app purchases. 81 numbers ascend memory asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for 81 numbers ascend memory against 5.0 for Depengder. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews are what separate them: 100% of 81 numbers ascend memory's written reviews are positive against 92% of Depengder's.

81 numbers ascend memory ships an update every 13 months, Depengder every 5 weeks. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 81 numbers ascend memory | Depengder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/81-numbers-ascend-memory/id422252842/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/depengder/id1157526306/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | **100.0% of reviews** | 92.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 13 months | **Every 5 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 4 MB | 153 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Currach Software](https://appshunter.io/developer/315759561) | [Hiroaki Nita](https://appshunter.io/developer/1157526305) |

## What reviewers say

### 81 numbers ascend memory

[App page](https://appshunter.io/ios/app/81-numbers-ascend-memory/id422252842)

A memory game where players find numbers 1 through 81 in ascending order across nine stages. After the initial touch, number tiles are hidden, requiring memorization of their positions to complete each level quickly.

**Highlights:** Find numbers 1-81, Ascending order challenge, Memorize hidden tile positions, Nine stages of increasing difficulty, Quick reaction and memory test

**Features:** macOS Compatibility

**In-app purchases:** none


### Depengder

[App page](https://appshunter.io/ios/app/depengder/id1157526306)

Defend the world with a troop of penguins in this exciting tower defense game. Deploy weapons and ally units to defeat approaching monsters, and recruit defeated foes to join your ranks. Upgrade various elements to enhance your defenses and strategy.

**Highlights:** Penguin troop defense, Monster recruitment, Weapon upgrades, Ally unit upgrades, Strategic deployment

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 120 diamonds | $0.99 | one-time |
| 350 diamonds | $2.99 | one-time |
| No Ads | $3.99 | one-time |
| 800 diamonds | $5.99 | one-time |
| Bonus Pass | $19.99 | one-time |
| 2,700 diamonds | $19.99 | one-time |
| 5,000 diamonds | $29.99 | one-time |
| 10,000 diamonds | $59.99 | one-time |


## Frequently asked questions

### Is 81 numbers ascend memory free?

81 numbers ascend memory is free to download, with no in-app purchases.

### Is Depengder free?

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

### Which has better reviews, 81 numbers ascend memory or Depengder?

81 numbers ascend memory and Depengder are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do 81 numbers ascend memory or Depengder have ads?

Depengder shows ads; 81 numbers ascend memory does not.

### Which is updated more often, 81 numbers ascend memory or Depengder?

81 numbers ascend memory ships an update every 13 months, and Depengder every 5 weeks. Most recently, 81 numbers ascend memory was updated on October 6, 2026 and Depengder on October 24, 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.*