# HeyG Math vs Sapling Isle

The clearest difference is update cadence: Sapling Isle at fortnightly against HeyG Math's every 7 months. HeyG Math's advantage is iOS requirement (15.1 vs 18.0). On price, ads, 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.

HeyG Math ships an update every 7 months, Sapling Isle fortnightly. The most recent releases landed on November 5, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | HeyG Math | Sapling Isle |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Fortnightly** |
| Monetization | — | Free |
| Size | 53 MB | 40 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ronald Edmeades](https://appshunter.io/developer/1850579996) | [大鹏 张](https://appshunter.io/developer/937718061) |

## What reviewers say

### HeyG Math

[App page](https://appshunter.io/ios/app/heyg-math/id6757503036)

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

**In-app purchases:** none


### Sapling Isle

[App page](https://appshunter.io/ios/app/sapling-isle-physics-lab/id6792211746)

Explore physics and astronomy through interactive 3D experiments. Manipulate variables, observe system responses, and delve into underlying scientific concepts and equations. Offers multilingual support and adaptive layouts for iPhone and iPad.

**Highlights:** Interactive 3D physics experiments, 3D Solar System simulation, Black hole and light bending exploration, Microscopic world simulations, Multivariable comparisons and graphs, Exploration of equations and model limits, Multilingual interface

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

**In-app purchases:** none


## Frequently asked questions

### Is HeyG Math free?

HeyG Math is free to download, with no in-app purchases.

### Is Sapling Isle free?

Sapling Isle is free to download, with no in-app purchases.

### Do HeyG Math or Sapling Isle have ads?

Neither HeyG Math nor Sapling Isle shows ads.

### Which is updated more often, HeyG Math or Sapling Isle?

HeyG Math ships an update every 7 months, and Sapling Isle fortnightly. Most recently, HeyG Math was updated on November 5, 2026 and Sapling Isle on November 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.*