# Keystone Alg I Practice Tests vs Knowt

The clearest difference is price: Knowt at Free against Keystone Alg I Practice Tests's $0.99. Knowt also leads on rating (4.7 vs 2.0) and update cadence (weekly vs every 2 months). Keystone Alg I Practice Tests's advantage is in-app purchases (none vs 32) and review sentiment (80% vs 62%). On ads and device support there is nothing between them.

Knowt is free to download; Keystone Alg I Practice Tests costs $0.99 up front. Knowt sells 27 in-app purchases, starting at $5.99 per month. Keystone Alg I Practice Tests asks for nothing beyond the download.

Knowt holds the better App Store score, 4.7 against 2.0. That said, the two scores are not equally well evidenced: Knowt has 11K ratings behind it against 7, so its average is the more settled of the two. Written reviews complicate that: 80% of Keystone Alg I Practice Tests's written reviews are positive against 62% of Knowt's, so the app with the better star average is not the one people write more warmly about.

Keystone Alg I Practice Tests ships an update every 2 months, Knowt weekly. The most recent releases landed on October 12, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Keystone Alg I Practice Tests | Knowt |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [2.0 (7 ratings)](https://appshunter.io/ios/app/keystone-alg-i-practice-tests/id795334519/reviews) | **[4.7 (11K ratings)](https://appshunter.io/ios/app/knowt-ai-flashcards-and-notes/id6463744184/reviews)** |
| Number of ratings | 7 | **11K** |
| Positive reviews | **80.0% of reviews** | 61.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | — | **#67** |
| Size | 27 MB | 150 MB |
| Requires iOS | **8.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [iPREPpress LLC](https://appshunter.io/developer/390888386) | [Knowt Inc.](https://appshunter.io/developer/1462368056) |

## What reviewers say

### Keystone Alg I Practice Tests

[App page](https://appshunter.io/ios/app/keystone-alg-i-practice-tests/id795334519)

Prepare for your Algebra I exam with realistic practice tests. This app offers 120 multiple-choice questions across two tests, complete solutions, and helpful tools like a calculator and formula sheet to boost your confidence.

**Highlights:** 120 multiple-choice questions, Two practice tests with modules, Complete solutions provided, Formula sheet and calculator, Question navigator and flagging, Scoring with estimated Keystone score, Optional timer for time management

**Features:** macOS Compatibility

**In-app purchases:** none


### Knowt

[App page](https://appshunter.io/ios/app/knowt-ai-flashcards-and-notes/id6463744184)

**Currently charting:** #67 Top Free · Education, #114 Top Grossing · Education (US App Store)

This study app uses AI to transform notes and lecture videos into flashcards and practice tests. It offers various study modes, including spaced repetition, and provides free AP exam study guides. Millions of student-created resources are available.

**Highlights:** AI flashcard maker, Summarize lecture videos, Create practice tests from notes/PDFs/videos, Free Learn Mode with multiple study modes, Spaced Repetition algorithm, Free AP Study Guides, Sync across mobile and web

**Features:** macOS Compatibility

**In-app purchases (27)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Student Plus Monthly | $5.99 | per month |
| Student Plus Monthly | $7.99 | per month |
| Teacher Plus Monthly | $7.99 | per month |
| Student Ultra Weekly | $9.99 | per 7 days |
| Student Ultra Monthly | $12.99 | per month |
| Teacher Ultra Monthly | $12.99 | per month |
| Student Ultra Monthly | $14.99 | per month |
| Teacher Ultra Monthly | $14.99 | per month |
| Student Ultra Monthly | $19.99 | per month |
| Student Ultra Monthly | $19.99 | per month |
| Student Ultra Monthly | $19.99 | per month |
| Teacher Ultra Monthly | $19.99 | per month |
| Student Plus Annual | $23.99 | per year |
| Student Ultra Monthly | $24.99 | per month |
| Teacher Plus Annual | $35.99 | per year |
| Teacher Ultra Annual | $47.99 | per year |
| Student Ultra Annual | $59.99 | per year |
| Teacher Ultra Annual | $59.99 | per year |
| Student Ultra Annual | $95.99 | per year |
| Teacher Ultra Annual | $95.99 | per year |
| Student Ultra Annual | $119.99 | per year |
| Student Ultra Annual | $119.99 | per year |
| Student Ultra Annual | $119.99 | per year |
| Student Ultra Annual | $119.99 | per year |
| Teacher Ultra Annual | $119.99 | per year |
| Student Ultra Annual | $149.99 | per year |
| Student ultra annual | $149.99 | per year |

**What reviewers like**

- 🚀 Amazing app
- 🚀 Quizlet alternative
- 👍 Helpful for studying
- 👍 Easy to use
- 👍 Intuitive interface

**What reviewers complain about**

- 🐛 Frequent crashes
- 🐛 Glitchy app
- 🐛 Bugs with flashcard functionality
- 🐛 Inconsistent performance
- 🐛 Syncing issues between devices

**Reported bugs**

- Flashcards disappearing or duplicating
- Incorrect answers marked as correct
- Freezing on update screen
- Compatibility issues on certain devices

**Requested features**

- Split screen support for iPad
- Ability to manually sort flashcards
- More formatting options for flashcards
- Improved AI-generated notes
- Offline study mode


## Frequently asked questions

### Is Keystone Alg I Practice Tests free?

Keystone Alg I Practice Tests costs $0.99, with no in-app purchases.

### Is Knowt free?

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

### Which has better reviews, Keystone Alg I Practice Tests or Knowt?

Knowt is rated higher. Keystone Alg I Practice Tests averages 2.0 out of 5 from 7 ratings, while Knowt averages 4.7 from 11K ratings.

### Do Keystone Alg I Practice Tests or Knowt have ads?

Neither Keystone Alg I Practice Tests nor Knowt shows ads.

### Which is updated more often, Keystone Alg I Practice Tests or Knowt?

Keystone Alg I Practice Tests ships an update every 2 months, and Knowt weekly. Most recently, Keystone Alg I Practice Tests was updated on October 12, 2026 and Knowt on October 21, 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.*