# Study Harbors vs Sapling Isle

The clearest difference is price: Sapling Isle at Free against Study Harbors's $0.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

Sapling Isle is free to download; Study Harbors costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on November 5, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Study Harbors | Sapling Isle |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | — | Free |
| Size | 5 MB | 40 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Robert Corbin](https://appshunter.io/developer/1890247992) | [大鹏 张](https://appshunter.io/developer/937718061) |

## What reviewers say

### Study Harbors

[App page](https://appshunter.io/ios/app/study-harbors/id6770024866)

**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 Study Harbors free?

Study Harbors costs $0.99, with no in-app purchases.

### Is Sapling Isle free?

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

### Do Study Harbors or Sapling Isle have ads?

Neither Study Harbors nor Sapling Isle shows ads.

### Which is updated more often, Study Harbors or Sapling Isle?

Study Harbors ships an update fortnightly, and Sapling Isle fortnightly. Most recently, Study Harbors 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.*