# Study100on100 vs HiGriva

The clearest difference is in-app purchases: Study100on100 at none against HiGriva's 2. Study100on100 also leads on update cadence (every 6 days vs fortnightly). HiGriva's advantage is device support (3 vs 1) and iOS requirement (14.0 vs 16.0). On price and ads there is nothing between them.

Both are free to download. HiGriva sells 2 in-app purchases, starting at $4.99 per month. Study100on100 asks for nothing beyond the download.

Study100on100 ships an update every 6 days, HiGriva fortnightly. The most recent releases landed on September 14, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Study100on100 | HiGriva |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Fortnightly |
| Size | 56 MB | 4 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ISolvX](https://appshunter.io/developer/1836852840) | [Babita Vayachal](https://appshunter.io/developer/1889779093) |

## What reviewers say

### Study100on100

[App page](https://appshunter.io/ios/app/study100on100/id6751793640)

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

**In-app purchases:** none


### HiGriva

[App page](https://appshunter.io/ios/app/higriva/id6761456420)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HiGriva Monthly | $4.99 | per month |
| HiGriva Annual | $49.99 | per year |


## Frequently asked questions

### Is Study100on100 free?

Study100on100 is free to download, with no in-app purchases.

### Is HiGriva free?

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

### Do Study100on100 or HiGriva have ads?

Neither Study100on100 nor HiGriva shows ads.

### Which is updated more often, Study100on100 or HiGriva?

Study100on100 ships an update every 6 days, and HiGriva fortnightly. Most recently, Study100on100 was updated on September 14, 2026 and HiGriva on September 20, 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.*