Rocket Languages vs iSigner
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rocket Languages
Learn to speak new languages like Spanish, French, and Japanese with structured audio lessons and cultural insights. This app offers lifetime access to courses designed for real conversations, helping you overcome common learning frustrations and speak confidently from day one.
- Structured audio lessons for speaking
- Lifetime access with free updates
- Cultural insights and customs
- Voice recognition for pronunciation
- Adaptive review activities
- Interactive audio and conversation practice
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Rocket Languages - Finally Speak Spanish, French, Japanese & More Learn Spanish, French, Japanese, Italian, German, Korean, Chinese, and more with Rocket Languages - trusted by 2+ million learners worldwide. Unlike game-based apps, Rocket gives you lifetime access to structured lessons that teach you to speak confidently in real conversations. Start your free trial today and see how quickly you’ll go from learning words to actually speaking your new language. WHY ROCKET LANGUAGES WORKS • Speak in real conversations from day 1 – guided audio lessons get you talking fast • Get lifetime access with free updates – your course never expires, and you own it for life • Understand culture, not just grammar – greetings, customs, food, holidays, and everyday life • Perfect your pronunciation – state-of-the-art voice recognition with thousands of native audio examples • Fix weak spots fast – smart review activities adapt to your progress WHAT YOU’LL GET IN EACH LEVEL • 60+ hours of interactive audio lessons you can listen to anywhere — like a podcast, but designed to get you speaking • 60+ hours of Language & Culture lessons that explain the “why,” not just the “what” • Writing practice for Japanese, Korean, Chinese, and other script-based languages • Stress-free conversation practice – train both sides of real dialogues so you’re ready when it counts • Built-in motivational tools to keep you inspired and on track SOLVE THE BIGGEST LANGUAGE LEARNING FRUSTRATIONS • Forgetting what you’ve learned • Memorizing phrases you can’t use in real life • Feeling nervous speaking with locals • Struggling to find time in a busy schedule • Believing you’re too old to learn • Finding other apps unstructured or confusing With Rocket Languages, you’ll remember what you learn, practice until it sticks, and finally speak with confidence. EXTRA BENEFITS YOU WON’T FIND ELSEWHERE • Train your ear – interactive audio sharpens listening skills quickly • Learn how the language actually works – build sentences step by step • Get tailored courses – each one crafted for what’s practical and relevant • Stay motivated – built-in tools keep your learning on track WHY LEARNERS CHOOSE ROCKET LANGUAGES • Proven by millions worldwide • One-time purchase – no ads, no subscriptions • A complete method that teaches speaking, listening, reading, writing, and culture START SPEAKING TODAY Whether it’s for travel, work, or personal growth, Rocket Languages gives you everything you need to finally speak your new language with confidence. • Free trial included – explore the course with no time limit. • Try a set number of lessons for free, then unlock full levels when you’re ready for more. • Additional levels are available as optional in-app purchases, but you’ll always keep free access to your trial lessons. Download Rocket Languages today - start your free trial and begin speaking Spanish, French, Japanese, and more with confidence.
iSigner
This app provides the world's first and only comprehensive Shanghai sign language dictionary. It features a vocabulary of 4000 signs derived from extensive video content, influencing sign languages across China and other Asian regions.
- Shanghai sign language dictionary
- 4000 video signs
- Influential sign language variant
- Comprehensive vocabulary
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1. The first and only app of Shanghai sign language dictionary in the world. 2. iSigner 1.0 is featured with a vocabulary of 4000 Shanghai Sign language ( a variant of Chinese Sign Language) from hundreds of hours of original video, which has exerted great influence on most parts of China, and even the sign languages of Hong Kong, Taiwan, Singapore, Malaysia and other countries and regions.
Screenshots
Verdict
The clearest difference is review sentiment: Rocket Languages at 69% against iSigner's 0%. Rocket Languages also leads on rating (4.6 vs 1.0) and update cadence (every 3 weeks vs every 5 months). iSigner's advantage is iOS requirement (10.0 vs 16.4). On price, ads, in-app purchases and monetization model 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. Rocket Languages sells 49 one-off in-app purchases and iSigner sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Rocket Languages holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: Rocket Languages has 2.4K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 69% of Rocket Languages's written reviews are positive against 0% of iSigner's.
Rocket Languages ships an update every 3 weeks, iSigner every 5 months. The most recent releases landed on September 24, 2026 and June 1, 2026 respectively.
| Parameter | Rocket Languages | iSigner |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (2.4K ratings) — better | 1.0 (2 ratings) |
| Positive reviews | 69.2% of reviews — better | 0.0% of reviews |
| Number of ratings | 2.4K — better | 2 |
| Update frequency | Every 3 weeks — better | Every 5 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.4 | 10.0 — better |
| Further details — not scored | ||
| Size | 44 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Libros Media Ltd | 焕 盛 |
Customer experience
Rocket Languages
iSigner
Bugs and requests
Rocket Languages
Reported bugs
5 issues- Audio playback issues
- Inconsistent voice recognition
- Lesson progress not properly tracked
- Compatibility problems with newer devices/OS
- Crashes and freezes during use
Requested features
5 requests- Ability to slow down audio playback
- More grammar and vocabulary review tools
- Improved search and navigation within the app
- Customizable learning plans and progress tracking
- Integration with other language learning resources
iSigner
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Rocket Languages
- Rocket Sign Language Level 1$39.99
- Rocket Spanish Level 1$59.99
- Rocket Japanese Level 1$59.99
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- Rocket Italian Level 1$59.99
- Rocket Korean Level 1$59.99
- Rocket Arabic Level 1$59.99
- Rocket French Level 1$59.99
- Rocket Portuguese Level 1$59.99
- Rocket Sign Language Level 1$59.99
- Rocket Spanish Level 1$89.99
- Rocket Korean Level 1$89.99
- Rocket Arabic Level 1$89.99
- Rocket French Level 1$89.99
- Rocket German Level 1$89.99
- Rocket Italian Level 1$89.99
- Rocket Japanese Level 1$89.99
- Rocket French Level 1$99.99
- Rocket Japanese Level 1$99.99
- Rocket Italian Level 1$99.99
- Rocket Spanish Level 1$99.99
- Rocket Spanish Levels 1 & 2$119.99
- Rocket Spanish Premium: Level 1$149.99
- Rocket French Premium: Level 1$149.99
- Rocket German Premium: Level 1$149.99
- Rocket Italian Premium: Level 1$149.99
- Rocket Japanese Premium: Level 1$149.99
- Rocket Chinese Premium: Level 1$149.99
- Rocket Arabic Premium: Level 1$149.99
- Rocket Portuguese Premium: Level 1$149.99
- Rocket Korean Premium: Level 1$149.99
- Rocket Russian Premium: Level 1$149.99
- Rocket Spanish Levels 1, 2 & 3$179.99
- Rocket French Levels 1, 2 & 3$179.99
- Rocket Japanese Level 1, 2 & 3$179.99
- Rocket Russian Levels 1, 2 & 3$179.99
- Rocket German Levels 1, 2 & 3$179.99
- Rocket Chinese Levels 1, 2 & 3$179.99
- Rocket Italian Levels 1, 2 & 3$179.99
- Rocket Spanish Levels 1, 2 & 3$249.99
- Rocket Japanese Level 1, 2 & 3$249.99
- Rocket Italian Levels 1, 2 & 3$249.99
- Rocket German Levels 1, 2 & 3$249.99
- Rocket Chinese Levels 1, 2 & 3$249.99
- Rocket Russian Levels 1, 2 & 3$249.99
- Rocket French Levels 1, 2 & 3$249.99
- Rocket Japanese Level 1, 2 & 3$259.99
- Rocket Italian Levels 1, 2 & 3$259.99
- Rocket Spanish Levels 1, 2 & 3$259.99
- Rocket French Levels 1, 2 & 3$259.99
iSigner
- 上海手语常用词库$12.99
Questions
Is Rocket Languages free?
Is iSigner free?
Which has better reviews, Rocket Languages or iSigner?
Do Rocket Languages or iSigner have ads?
Which is updated more often, Rocket Languages or iSigner?
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