# Schema vs Field Guide

The clearest difference is in-app purchases: Field Guide at none against Schema's 2. Schema's advantage is update cadence (every 9 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Schema sells 2 in-app purchases, starting at $14.99 per month. Field Guide asks for nothing beyond the download.

Schema ships an update every 9 days, Field Guide monthly. The most recent releases landed on October 9, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Schema | Field Guide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/schema-knowledge-compounding/id6747011799/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Monthly |
| Monetization | Freemium | — |
| Size | 165 MB | 9 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Infinity Labs AG](https://appshunter.io/developer/1818442467) | [4fives Entertainment, LLC](https://appshunter.io/developer/6781844927) |

## What reviewers say

### Schema

[App page](https://appshunter.io/ios/app/schema-knowledge-compounding/id6747011799)

This AI-powered learning companion helps you capture, summarize, and retain important ideas. It uses smart review intervals to ensure knowledge sticks, fostering deeper understanding for lifelong learners. Turn consumed information into lasting comprehension.

**Highlights:** Capture and organize key ideas, AI summarization, Spaced repetition reviews, Smart practice for retention, Build compounding mental leverage

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Schema Pro Monthly | $14.99 | per month |
| Schema Pro Yearly | $149.99 | per year |


### Field Guide

[App page](https://appshunter.io/ios/app/field-guide-micro-lessons/id6781844925)

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

**In-app purchases:** none


## Frequently asked questions

### Is Schema free?

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

### Is Field Guide free?

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

### Do Schema or Field Guide have ads?

Neither Schema nor Field Guide shows ads.

### Which is updated more often, Schema or Field Guide?

Schema ships an update every 9 days, and Field Guide monthly. Most recently, Schema was updated on October 9, 2026 and Field Guide on October 18, 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.*