# Geometry Quick Reference vs InstantCert CLEP

The clearest difference is price: InstantCert CLEP at Free against Geometry Quick Reference's $0.99. InstantCert CLEP also leads on update cadence (every 6 months vs every 37 months) and device support (3 vs 1). Geometry Quick Reference's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 15.1). On ads there is nothing between them.

InstantCert CLEP is free to download; Geometry Quick Reference costs $0.99 up front. InstantCert CLEP sells 1 in-app purchase, starting at $19.99 per month. Geometry Quick Reference asks for nothing beyond the download.

Geometry Quick Reference ships an update every 37 months, InstantCert CLEP every 6 months. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Geometry Quick Reference | InstantCert CLEP |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | — | 11.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 37 months | **Every 6 months** |
| Monetization | — | Subscription |
| Size | 7 MB | 38 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [InstantCert.com, LLC](https://appshunter.io/developer/465309084) |

## What reviewers say

### Geometry Quick Reference

[App page](https://appshunter.io/ios/app/geometry-quick-reference/id706066085)

**Features:** macOS Compatibility

**In-app purchases:** none


### InstantCert CLEP

[App page](https://appshunter.io/ios/app/instantcert-clep/id1238759723)

Prepare for college credit exams like CLEP and DSST with smart flashcards and progress tracking. Study over 60 subjects on your phone and connect with a community of learners. Earn college credit faster and save on tuition.

**Highlights:** Smart flashcards for memorization, Covers CLEP, DSST & TECEP subjects, Mobile study anywhere, Progress tracking, Community support, Over 60 exam subjects

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access (1 Month) | $19.99 | per month |


## Frequently asked questions

### Is Geometry Quick Reference free?

Geometry Quick Reference costs $0.99, with no in-app purchases.

### Is InstantCert CLEP free?

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

### Do Geometry Quick Reference or InstantCert CLEP have ads?

Neither Geometry Quick Reference nor InstantCert CLEP shows ads.

### Which is updated more often, Geometry Quick Reference or InstantCert CLEP?

Geometry Quick Reference ships an update every 37 months, and InstantCert CLEP every 6 months. Most recently, Geometry Quick Reference was updated on September 24, 2026 and InstantCert CLEP on September 25, 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.*