# Study Guide Pro vs Estimator360

The clearest difference is price: Estimator360 at Free against Study Guide Pro's $2.99. Study Guide Pro's advantage is rating (4.0 vs 3.0) and device support (4 vs 1). On review sentiment, ratings volume, update cadence and ads there is nothing between them.

Estimator360 is free to download; Study Guide Pro costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Study Guide Pro holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

Study Guide Pro ships an update every 2 months, Estimator360 every 6 weeks. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Study Guide Pro | Estimator360 |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/study-guide-pro/id916066498/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/estimator360/id1503130531/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Paid | **Free** |
| Size | 2 MB | 6 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Pablo Arista](https://appshunter.io/developer/912273635) | [Estimator360, Inc.](https://appshunter.io/developer/1503130530) |

## What reviewers say

### Study Guide Pro

[App page](https://appshunter.io/ios/app/study-guide-pro/id916066498)

Create and review custom study guides for any subject. Organize questions and answers, randomize them for practice, and access your guides on your Apple Watch. Perfect for preparing for quizzes, tests, and certifications.

**Highlights:** Create custom study guides, Add questions and answers, Randomize question order, Create multiple guides, Edit existing entries, Apple Watch integration

**Features:** macOS Compatibility

**In-app purchases:** none


### Estimator360

[App page](https://appshunter.io/ios/app/estimator360/id1503130531)

Streamline construction projects with a cloud-based tool for estimating, project management, and client collaboration. Create accurate bids, manage tasks, and generate material lists and schedules automatically.

**Highlights:** Cloud-based estimating, Project management, Client and team management, Customizable project templates, Automated material lists, Project scheduling, QuickBooks integration

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

**In-app purchases:** none


## Frequently asked questions

### Is Study Guide Pro free?

Study Guide Pro costs $2.99, with no in-app purchases.

### Is Estimator360 free?

Estimator360 is free to download, with no in-app purchases.

### Which has better reviews, Study Guide Pro or Estimator360?

Study Guide Pro is rated higher. Study Guide Pro averages 4.0 out of 5 from 2 ratings, while Estimator360 averages 3.0 from 2 ratings.

### Do Study Guide Pro or Estimator360 have ads?

Neither Study Guide Pro nor Estimator360 shows ads.

### Which is updated more often, Study Guide Pro or Estimator360?

Study Guide Pro ships an update every 2 months, and Estimator360 every 6 weeks. Most recently, Study Guide Pro was updated on October 15, 2026 and Estimator360 on October 10, 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.*