# Abacus Exercise vs Instituto Santo Antônio

The clearest difference is ads: Instituto Santo Antônio at none against Abacus Exercise's shown. Abacus Exercise's advantage is update cadence (every 3 weeks vs every 19 months) and iOS requirement (11.0 vs 16.4). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Abacus Exercise ships an update every 3 weeks, Instituto Santo Antônio every 19 months. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Abacus Exercise | Instituto Santo Antônio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (62 ratings)](https://appshunter.io/ios/app/abacus-exercise/id1523833529/reviews)** | — |
| Number of ratings | **62** | — |
| Positive reviews | 46.2% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 19 months |
| Monetization | Ad-supported | — |
| Size | 90 MB | 49 MB |
| Requires iOS | **11.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hirokazu Komatsu](https://appshunter.io/developer/1523833531) | [The Members](https://appshunter.io/developer/1653824858) |

## What reviewers say

### Abacus Exercise

[App page](https://appshunter.io/ios/app/abacus-exercise/id1523833529)

Practice abacus calculations with a customizable digital tool. Adjust bead colors, sounds, and layout for a personalized learning experience. Challenge yourself with addition, subtraction, multiplication, and division exercises.

**Highlights:** Customizable abacus layout, Adjustable bead size and position, Up to 15-digit support, Customizable bead colors and sounds, Addition, subtraction, multiplication, division practice, Level-based challenges

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

**In-app purchases:** none


### Instituto Santo Antônio

[App page](https://appshunter.io/ios/app/instituto-santo-antonio/id6743547118)

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

**In-app purchases:** none


## Frequently asked questions

### Is Abacus Exercise free?

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

### Is Instituto Santo Antônio free?

Instituto Santo Antônio is free to download, with no in-app purchases.

### Do Abacus Exercise or Instituto Santo Antônio have ads?

Abacus Exercise shows ads; Instituto Santo Antônio does not.

### Which is updated more often, Abacus Exercise or Instituto Santo Antônio?

Abacus Exercise ships an update every 3 weeks, and Instituto Santo Antônio every 19 months. Most recently, Abacus Exercise was updated on October 24, 2026 and Instituto Santo Antônio on October 28, 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.*