AquaInverts vs Fully Fluent
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AquaInverts
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Through stimulating research and sound science, the Atlantic Salmon Trust is the foremost evidence-based salmon conservation charity in the UK. Fighting to halt the dramatic decline in wild Atlantic salmon stocks, the Trust is on a mission to protect this iconic species and safeguard their future. The wild salmon population is in drastic decline. In the mid 1980s, there were between 8 and 10 million salmon leaping around the Atlantic. That number has now plummeted to between 2 and 3 million, revealing a dramatic population free-fall that shows no signs of levelling out. So much so, that the wild Atlantic salmon could become an endangered species in 10 years’ time, disappearing from our seas and rivers altogether in just 20 or 30 years. This is a warning we simply cannot ignore. The Atlantic Salmon Trust exists solely for the protection of wild salmon and sea trout. It is our aim to create a positive future for these at-risk species; using scientific research to understand their decline, and using the generous donations from our supporters to put evidence-based solutions into practice. Wild Atlantic salmon are an iconic species with a remarkable history. They are uniquely placed to inform us of the quality of our waters, and form an incredibly important part of the ecosystem of our rivers. We cannot afford to lose them—and that’s why everything we do at the Trust is designed to put #WildSalmonFirst
Fully Fluent
Master new languages like English, Spanish, French, and more with AI-powered feedback. Practice speaking naturally and build confidence with a patient, 24/7 AI teacher. Customize your learning experience to fit your needs.
- AI-powered personalized feedback
- 24/7 AI teacher
- Practice speaking naturally
- Multiple language options
- Customizable learning pace
- Grammar and sentence correction
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Become fluent fast with Fully Fluent! Imagine speaking like a native on the job or while traveling. Imagine the doors that will open, the connections you can make! Fully Fluent can help you master English, Spanish, French, Hindi, Portuguese, Mandarin Chinese, and Italian! Our advanced technology provides personalized feedback to help you speak naturally and effortlessly. Fully Fluent’s AI teacher is patient, understanding, and available 24/7. Practice at your own pace, without pressure or embarrassment. You’ll never need to worry about making mistakes, and your confidence will grow. Fully Fluent is free! Just download the app and start learning. Need help with a sentence? Ask Fully Fluent if it's correct and get immediate feedback. Want to learn a specific grammatical concept? Just ask! Say goodbye to uninspiring textbooks and rote memorization drills. You can choose how to make Fully Fluent work best for you. You can converse completely in one language, you can speak to it in one language and have it respond in another, or you can have Fully Fluent translate part of your conversation into your desired language. Download Fully Fluent today and start your journey to fluency! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: AquaInverts at none against Fully Fluent's 7. AquaInverts also leads on ads (none vs shown) and iOS requirement (11.0 vs 15.0). On price, update cadence and device support 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. Fully Fluent sells 7 in-app purchases, starting at $4.99 per 7 days. AquaInverts asks for nothing beyond the download.
AquaInverts ships an update every 2 weeks, Fully Fluent every 3 weeks. Both last shipped on November 3, 2026.
| Parameter | AquaInverts | Fully Fluent |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.6 (479 ratings) — better |
| Positive reviews | — | 88.9% of reviews |
| Number of ratings | — | 479 — better |
| Update frequency | Every 2 weeks — better | Every 3 weeks |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 193 MB | 198 MB |
| Age rating | 4+ | 4+ |
| Developer | Aquaweb Ltd | Fully Fluent |
In-app purchases
AquaInverts
No in-app purchases
Fully Fluent
- Fully Fluent Premium$4.997 Days
- Fully Fluent Premium$14.992 Months
- 1 Month Subscription$14.991 Month
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- Fully Fluent Premium$24.992 Months
- Fully Fluent Premium$39.996 Months
- Fully Fluent Premium$59.991 Year
- Fully Fluent Premium$69.991 Year
Questions
Is AquaInverts free?
Is Fully Fluent free?
Do AquaInverts or Fully Fluent have ads?
Which is updated more often, AquaInverts or Fully Fluent?
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