Relingo vs 100ls
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Relingo
Master new vocabulary effortlessly while consuming your favorite content. This app integrates with various sources like YouTube, podcasts, and e-books to provide instant translations and personalized word learning. It uses spaced repetition to help you retain new words effectively.
- Bilingual subtitle support for YouTube
- Podcast subscription with AI subtitles
- Epub e-book import and reading
- Web page translation and word collection
- Anki-based word review system
- Built-in browser plugin for word collection
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Relingo allows you to easily master words and quickly check translations while browsing the content you are interested in, lowering the threshold for language learning. Content sources: • YouTube bilingual subtitles • Podcast subscriptions and AI subtitles • Epub e-book import and reading • Users can add separate web pages by themselves • Built-in rich RSS subscription sources also support free addition • There are functions such as read later, collection, reading progress, etc. • Built-in browser plug-in, collects new words when browsing online content with Safari Translation and highlighting: • Supports learning of several languages such as English, French, German, Chinese, Japanese, Korean, etc. • Supports multiple translation engines • Automatically highlight and annotate new words for users to improve browsing efficiency Word learning: • Users can continue to learn the words they collect during browsing and use Anki-based algorithms to review and deepen their memory. Auto Subscription Service Description: Monthly Membership 1. Subscription Service: Monthly Membership (1 month) 2. Subscription Price: $3.99/month 3. Payment: Subscriptions can be managed by the user, after the user confirms the purchase and pays, it is recorded in the iTunes account. 4. Renewal: The Apple iTunes account will deduct a fee within 24 hours before the expiration, and after the deduction is successful, the subscription period will be extended by one subscription period. 5. Cancel Renewal: If you need to cancel the subscription, please open the “Settings” on the iPhone –> enter “iTunes Store and App Store” –> click “Apple ID”, choose “View Apple ID”, enter “Account Settings” page, click “Subscriptions”, choose “Relingo” to cancel the subscription. If the subscription is not turned off at least 24 hours before the end of the subscription period, the subscription will be automatically renewed. Annual Membership 1. Subscription Service: Annual Membership (1 year) 2. Subscription Price: $19.99/year 3. Payment: Subscriptions can be managed by the user, after the user confirms the purchase and pays, it is recorded in the iTunes account. 4. Renewal: The Apple iTunes account will deduct a fee within 24 hours before the expiration, and after the deduction is successful, the subscription period will be extended by one subscription period. 5. Cancel Renewal: If you need to cancel the subscription, please open the “Settings” on the iPhone –> enter “iTunes Store and App Store” –> click “Apple ID”, choose “View Apple ID”, enter “Account Settings” page, click “Subscriptions”, choose “Relingo” to cancel the subscription. If the subscription is not turned off at least 24 hours before the end of the subscription period, the subscription will be automatically renewed. Privacy Policy: https://relingo.net/en/privacy Terms of Use: https://relingo.net/en/terms
100ls
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100LS helps you train English listening with real podcasts, synced subtitles, sentence replay, and bilingual translation. No flashcards. No drills. Just real audio, one sentence at a time. 100 Days Language Study Learn English through real podcasts. No flashcards, no drills. Learn English the way you actually use it. 100LS is built for learners who are past the basics and ready to train their ear on real, unscripted English. Pick a podcast episode you're curious about, hit play, and let the content do the teaching. Synchronized subtitles highlight word-for-word as audio plays. Tap any line to jump back and replay it. Toggle your native language translation on or off. Slow it down to catch every word, or speed it up to push your comprehension. Repeat until it clicks. Features Synced Subtitles Every word lands on screen exactly when it's spoken. Tap any subtitle line to jump to that moment in the audio — no scrubbing, no guessing. Native Language Translation Powered by Apple's on-device translation engine. Works offline. Toggle translations on when you need context, off when you want the challenge. Automatic Transcription No subtitles for an episode? 100LS generates them automatically using on-device speech recognition, then syncs them to the cloud so they load instantly next time. Variable Playback Speed 0.75x for close listening. 1x for natural pace. 1.25x–2x for review. One tap to cycle through. Learning Analytics Track your daily listening time and streaks. Small numbers add up — 20 minutes a day compounds fast. Who it's for You've studied English. You can read it fine. But listening to native speakers still feels like catching every third word. 100LS is for that gap — the one between knowing the language and actually hearing it. Requirements iOS 17.0 or later. Translation requires iOS 18.0 — language models download once on first use. Privacy Policy: https://socratop.com/privacy User Terms: https://socratop.com/terms
Screenshots
Verdict
The clearest difference is device support: Relingo at 3 against 100ls's 1. Relingo also leads on iOS requirement (13.0 vs 18.0). On price, update cadence, ads and in-app purchases 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. Relingo sells 2 in-app purchases, starting at $3.99 per month and 100ls sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Relingo ships an update every 3 weeks, 100ls fortnightly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | Relingo | 100ls |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (44 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 44 — better | — |
| Update frequency | Every 3 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 86 MB | 15 MB |
| Age rating | 17+ | 12+ |
| Developer | Lesslab | Socratop Tech |
In-app purchases
Relingo
- Monthly Premium$3.991 Month
- Annual Premium$39.991 Year
100ls
- 100ls plus monthly1 Month trial$4.991 Month
- 100ls plus yearly7 Days trial$39.991 Year
- 100ls 终身会员$39.99









