# Fuel Right vs Study Buddy

The clearest difference is in-app purchases: Fuel Right at none against Study Buddy's 5. Fuel Right also leads on rating (5.0 vs 4.6). Study Buddy's advantage is update cadence (fortnightly vs every 12 months) and ratings volume (331 vs 3). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Study Buddy sells 5 in-app purchases, starting at $4.99 per 7 days. Fuel Right asks for nothing beyond the download.

Fuel Right holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Study Buddy has 331 ratings behind it against 3, so its average is the more settled of the two.

Fuel Right ships an update every 12 months, Study Buddy fortnightly. The most recent releases landed on September 20, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Fuel Right | Study Buddy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/fuel-right/id1550842090/reviews)** | [4.6 (331 ratings)](https://appshunter.io/ios/app/study-buddy-ai-problem-solver/id6502910273/reviews) |
| Number of ratings | 3 | **331** |
| Positive reviews | — | 58.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 9 MB | 89 MB |
| Requires iOS | **12.4** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Fuel Right Canada Limited](https://appshunter.io/developer/1550842092) | [NEXTLINE YAZILIM LİMİTED ŞİRKETİ](https://appshunter.io/developer/1795648837) |

## What reviewers say

### Fuel Right

[App page](https://appshunter.io/ios/app/fuel-right/id1550842090)

This tool simplifies calculating fuel additive mixture ratios. Users can select their preferred units of measure to easily determine the correct quantities for treating fuel volumes.

**Highlights:** Fuel additive mixture calculation, Selectable units of measure, Easy quantity determination, Supports various fuel volumes

**Features:** macOS Compatibility

**In-app purchases:** none


### Study Buddy

[App page](https://appshunter.io/ios/app/study-buddy-ai-problem-solver/id6502910273)

This AI-powered app scans homework problems and provides instant, accurate answers with personalized explanations. Choose from different tutor personas for a tailored learning experience, available 24/7 to help you save time and understand your studies better.

**Highlights:** Homework scanning and text recognition, Personalized tutor personas, 24/7 availability, Instant solutions, Engaging explanations, Weekly question limit

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Study Buddy Premium | $4.99 | per 7 days |
| Study Buddy Weekly Premium | $5.99 | per 7 days |
| Study Buddy Premium | $6.99 | per 7 days |
| Study Buddy Premium | $19.99 | per month |
| Study Buddy Premium | $59.99 | per 6 months |


## Frequently asked questions

### Is Fuel Right free?

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

### Is Study Buddy free?

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

### Which has better reviews, Fuel Right or Study Buddy?

Fuel Right is rated higher. Fuel Right averages 5.0 out of 5 from 3 ratings, while Study Buddy averages 4.6 from 331 ratings.

### Do Fuel Right or Study Buddy have ads?

Neither Fuel Right nor Study Buddy shows ads.

### Which is updated more often, Fuel Right or Study Buddy?

Fuel Right ships an update every 12 months, and Study Buddy fortnightly. Most recently, Fuel Right was updated on September 20, 2026 and Study Buddy on October 1, 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.*