# DSST Technical Writing Prep vs InstantCert CLEP

The clearest difference is price: InstantCert CLEP at Free against DSST Technical Writing Prep's $1.99. DSST Technical Writing Prep's advantage is in-app purchases (none vs 1) and iOS requirement (10.0 vs 15.1). On update cadence, ads and device support there is nothing between them.

InstantCert CLEP is free to download; DSST Technical Writing Prep costs $1.99 up front. InstantCert CLEP sells 1 in-app purchase, starting at $19.99 per month. DSST Technical Writing Prep asks for nothing beyond the download.

DSST Technical Writing Prep ships an update every 4 months, InstantCert CLEP every 6 months. The most recent releases landed on September 15, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | DSST Technical Writing Prep | InstantCert CLEP |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | — | 11.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Monetization | — | Subscription |
| Size | 50 MB | 38 MB |
| Requires iOS | **10.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Feraco media Inc.](https://appshunter.io/developer/497957884) | [InstantCert.com, LLC](https://appshunter.io/developer/465309084) |

## What reviewers say

### DSST Technical Writing Prep

[App page](https://appshunter.io/ios/app/dsst-technical-writing-prep/id959410743)

**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 DSST Technical Writing Prep free?

DSST Technical Writing Prep costs $1.99, with no in-app purchases.

### Is InstantCert CLEP free?

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

### Do DSST Technical Writing Prep or InstantCert CLEP have ads?

Neither DSST Technical Writing Prep nor InstantCert CLEP shows ads.

### Which is updated more often, DSST Technical Writing Prep or InstantCert CLEP?

DSST Technical Writing Prep ships an update every 4 months, and InstantCert CLEP every 6 months. Most recently, DSST Technical Writing Prep was updated on September 15, 2026 and InstantCert CLEP on September 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*