# Matsy Abacus vs Delta T&D

The clearest difference is in-app purchases: Delta T&D at none against Matsy Abacus's 5. Matsy Abacus's advantage is update cadence (monthly vs every 3 months) and iOS requirement (13.4 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Matsy Abacus sells 5 in-app purchases, starting at $2.99 per month. Delta T&D asks for nothing beyond the download.

Matsy Abacus ships an update monthly, Delta T&D every 3 months. The most recent releases landed on September 22, 2026 and August 13, 2026 respectively.

## The numbers

| Metric | Matsy Abacus | Delta T&D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (30 ratings)](https://appshunter.io/ios/app/matsy-abacus/id1439473353/reviews)** | — |
| Number of ratings | **30** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 66 MB | 53 MB |
| Requires iOS | **13.4** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IGOR ILIN](https://appshunter.io/developer/1439473352) | [ICL-KME CS](https://appshunter.io/developer/1122470888) |

## What reviewers say

### Matsy Abacus

[App page](https://appshunter.io/ios/app/matsy-abacus/id1439473353)

This educational app helps children master mental arithmetic through engaging games and adaptive trainers. It utilizes abacus techniques, flash cards, and proven methods to boost calculation speed, focus, and memory. Suitable for students, parents, and teachers seeking effective mental math tools.

**Highlights:** Abacus flash cards, Multiplication and division trainers, Mental math exercises, Brother/Friend techniques, 5050 mode, Speed & accuracy games, Adaptive difficulty

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mental Workout Premium Month | $2.99 | per month |
| Premium (6 months) | $8.99 | per 6 months |
| Matsy Premium Year | $9.99 | per year |
| Mental Workout Premium Year | $14.99 | per year |
| Mental Workout Premium | $7.99 | one-time |


### Delta T&D

[App page](https://appshunter.io/ios/app/delta-t-and-d/id6479645109)

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

**In-app purchases:** none


## Frequently asked questions

### Is Matsy Abacus free?

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

### Is Delta T&D free?

Delta T&D is free to download, with no in-app purchases.

### Do Matsy Abacus or Delta T&D have ads?

Neither Matsy Abacus nor Delta T&D shows ads.

### Which is updated more often, Matsy Abacus or Delta T&D?

Matsy Abacus ships an update monthly, and Delta T&D every 3 months. Most recently, Matsy Abacus was updated on September 22, 2026 and Delta T&D on August 13, 2026.

---

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