# Shenmo Abacus vs Knowledge Nerds

The clearest difference is update cadence: Shenmo Abacus at fortnightly against Knowledge Nerds's every 2 months. Shenmo Abacus also leads on iOS requirement (12.0 vs 15.5). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Shenmo Abacus sells 3 one-off in-app purchases and Knowledge Nerds sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Shenmo Abacus ships an update fortnightly, Knowledge Nerds every 2 months. The most recent releases landed on May 16, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Shenmo Abacus | Knowledge Nerds |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Size | 76 MB | 146 MB |
| Requires iOS | **12.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [beijing shenmo culture company](https://appshunter.io/developer/1377583312) | [Online Learning](https://appshunter.io/developer/1790866777) |

## What reviewers say

### Shenmo Abacus

[App page](https://appshunter.io/ios/app/shenmo-abacus/id6738268822)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly card (1 month) | $0.99 | one-time |
| VIP half year card (6 months) | $5.99 | one-time |
| VIP Annual Card(12 months) | $9.99 | one-time |


### Knowledge Nerds

[App page](https://appshunter.io/ios/app/knowledge-nerds/id6753704280)

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Package - AV | $34.99 | one-time |
| Package - AY | $39.99 | one-time |
| Package - AZ | $39.99 | one-time |
| Package - BB | $39.99 | one-time |
| Package - BD | $39.99 | one-time |
| Package - AW | $39.99 | one-time |
| Package - BE | $44.99 | one-time |
| Package - BG | $49.99 | one-time |
| Package - BH | $49.99 | one-time |
| Package - BF | $49.99 | one-time |


## Frequently asked questions

### Is Shenmo Abacus free?

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

### Is Knowledge Nerds free?

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

### Do Shenmo Abacus or Knowledge Nerds have ads?

Neither Shenmo Abacus nor Knowledge Nerds shows ads.

### Which is updated more often, Shenmo Abacus or Knowledge Nerds?

Shenmo Abacus ships an update fortnightly, and Knowledge Nerds every 2 months. Most recently, Shenmo Abacus was updated on May 16, 2026 and Knowledge Nerds on September 22, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*