SIGMA Clermont vs 990prep
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SIGMA Clermont
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Retrouvez grâce à cette application Sigmalienne, tous les services utiles et accessibles partout avec votre pouce ! Une application pour vous aider au quotidien à l'école où lors de votre recherche de votre future école d'ingénieurs.
990prep
Prepare for the TOEIC® exam with a comprehensive training app. It offers numerous practice exercises, vocabulary flashcards, and grammar lessons designed to improve your score. Instant feedback helps you learn from mistakes.
- 240 Practice Exercises
- 1,000+ Vocabulary Flashcards
- 100+ Grammar Lessons
- Instant Corrections
- Progress Tracking
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Prepare for the TOEIC® with 990prep — the simplest way to reach your target score. 240 Practice Exercises Train with 240 exercises. Get instant corrections and learn from every mistake. 1,000+ TOEIC® Vocabulary Flashcards Learn the words that show up on the TOEIC®. Our flashcard system helps you remember them fast. 100+ Grammar Lessons Short, clear lessons built for the TOEIC®. No fluff, just what you need. Premium is an auto-renewable subscription. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. You can manage or cancel your subscription in your Apple Account settings after purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://990prep.com/en/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: SIGMA Clermont at none against 990prep's 2. 990prep's advantage is update cadence (every 9 days vs every 10 months). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. 990prep sells 2 in-app purchases, starting at $44.99 per month. SIGMA Clermont asks for nothing beyond the download.
SIGMA Clermont ships an update every 10 months, 990prep every 9 days. The most recent releases landed on September 17, 2026 and October 11, 2026 respectively.
| Parameter | SIGMA Clermont | 990prep |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Every 10 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 35 MB | 89 MB |
| Age rating | 4+ | 4+ |
| Developer | AppScho | Justin De Sio |
In-app purchases
SIGMA Clermont
No in-app purchases
990prep
- Monthly Premium7 Days trial$44.991 Month
- Annual Premium7 Days trial$89.991 Year
