SonLerni vs CocoDrilo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SonLerni
Improve your listening comprehension in French, Spanish, German, and English with authentic audio and AI-powered explanations. Learn through real conversations and podcasts, with transcripts and study tools to reinforce understanding. Designed for intermediate learners to bridge the gap between reading and understanding native speakers.
- Authentic audio and podcasts
- AI-powered explanations
- Transcripts for listening support
- Vocabulary review tools
- Adjustable playback speed
- Focus on real-world comprehension
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Ready to take your fluency to the next level? SonLerni is for intermediate speakers (A2–B2) who have made some progress in learning a language but lose native speakers at full speed. Level up with native podcasts in English, French, German, Spanish and Hebrew, with synced transcripts, paced playback and phrase-by-phrase replay. TOTAL IMMERSION, NOT TEXTBOOK AUDIO Real conversations at natural speed, full of the slang, idioms and shortcuts textbooks skip. Podcasts let you eavesdrop on natives. SonLerni makes sure you catch what they say. AI TUTOR Lost? Tap the phrase. The AI tutor translates it literally, what the speaker actually means and the nuance: casual, regional or formal. Ask a follow-up, then another. The AI tutor loves rabbit holes. TOO FAST? SLOW IT DOWN • A transcript that follows the audio phrase by phrase • Replay by phrase, not by seconds • Fine-tune the playback speed FLASHCARDS BUILD THEMSELVES Every phrase you ask about becomes a flashcard, with the sentence you heard it in. A few minutes of review a day keeps it. PICK YOUR LEVEL Made for A2–B2. Set your level and get episodes that stretch you without losing you. FIVE LANGUAGES. ONE APP. English, French, German, Spanish and Hebrew. Switch languages any time. SEE YOUR PROGRESS Minutes listened, active days, flashcards and weekly goals, all on one screen. BUILT FOR INTERMEDIATE LEARNERS Outgrown beginner apps? Your next level is native podcasts, explained. SUBSCRIPTION SonLerni Premium is an auto-renewing annual subscription. Payment is charged when you confirm your purchase. The subscription renews automatically unless you turn it off at least 24 hours before the end of the current period. Manage or cancel it any time in your App Store account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sonlerni.com/privacy
CocoDrilo
This app uses spaced repetition to help you learn and retain Spanish vocabulary and grammar. It offers daily reviews, contextual examples, and various practice styles to build long-term retention without repetitive drills.
- Spaced repetition for retention
- Vocabulary and grammar review
- Words in context with examples
- Multiple practice styles
- Progress tracking and streaks
- Customizable learning options
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Remember the Spanish you learn. New words and grammar come back in a daily review until they stick. Set a daily word goal and follow a guided grammar path. New words and grammar topics feed one daily review, and your answers shape what comes back: difficult material returns sooner, while material you know well gets more time between reviews. DAILY REVIEW FOR VOCABULARY AND GRAMMAR New vocabulary and completed grammar topics get their own review schedules in the same daily routine, so practice continues beyond your first encounter. Review vocabulary in both directions, from understanding Spanish to recalling it yourself. WORDS IN CONTEXT Explore 6,300+ built-in words with 18,900+ bilingual examples. See how words work in different sentences and browse themed lists. Search in Spanish or English when you want to look something up. HEAR HOW IT SOUNDS Play pronunciation audio for 11,000+ built-in words, verb forms, and grammar answers, so you learn how Spanish sounds as well as how it's spelled. GRAMMAR PRACTICE WITH EXPLANATIONS Work through 70 guided drills across 15 units, from ser and estar to past tenses, commands, the subjunctive, and si-clauses. Practice conjugating verbs and choosing grammar that fits the sentence. Answer explanations help you understand why a form fits and learn from mistakes. Open a concise Quick guide when you need a refresher. PRACTICE WHAT NEEDS ATTENTION Choose vocabulary, grammar, or conjugation for extra practice. Track your learning and review activity, and see which material is going strong. With CocoDrilo Pro, repeated misses in Daily Review can become a personalized Focus session. Use your recent review history to work on words and grammar that need more attention. BRING YOUR OWN VOCABULARY With CocoDrilo Pro, create personal lists, add words, or import vocabulary from pasted text or CSV, TSV, and plain-text files. Bring material from a class, tutor, or your own reading into the same learning and review routine. Preview your import and check for existing words before adding it. COCODRILO PRO Pro adds personal vocabulary and import, detailed insights into what needs attention, personalized Focus practice, higher daily goals, optional extra review, and more control over practice sessions and grammar settings. Whether you're starting Spanish or returning to it, give what you learn a place in your daily routine. Use of CocoDrilo and CocoDrilo Pro is governed by the Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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Verdict
SonLerni and CocoDrilo are too close to call on the numbers: across 10 compared parameters — price, rating, review sentiment and ratings volume among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. SonLerni sells 1 in-app purchase, starting at $59.99 per year and CocoDrilo sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for SonLerni against 5.0 for CocoDrilo. Both are backed by a comparable volume of ratings — 10 and 10 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.
| Parameter | SonLerni | CocoDrilo |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (10 ratings) | 5.0 (10 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 10 | 10 |
| Update frequency | Weekly | Weekly |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 81 MB | 184 MB |
| Age rating | 12+ | 4+ |
| Developer | Sonlerni LLC | Ithaca Software LLC |
Customer experience
SonLerni
CocoDrilo
In-app purchases
SonLerni
- Yearly Subscription7 Days trial2 variants$59.991 Year
CocoDrilo
- CocoDrilo Pro Monthly7 Days trial$4.991 Month
- CocoDrilo Pro Yearly7 Days trial$39.991 Year









