Comparison

SentenceDeck vs Belletra

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SentenceDeck

Features
Read full description

Shadowing, made simple. Paste any text — a news story, a podcast transcript, a page from your textbook — and SentenceDeck turns it into a sentence-by-sentence speaking drill: hear it, say it, hear yourself back. No scripted lessons, no grades. Just the method interpreters and polyglots swear by, applied to the exact text you want to master. HOW A SESSION WORKS For every sentence, SentenceDeck: 1. Plays a clear reference voice 2. Records you automatically — recording stops when you stop speaking 3. Plays your voice back so you can hear the difference Switch on A/B compare to hear reference and recording back to back, lock a tricky sentence to loop it, and change playback speed (0.75× to 1.5×) without regenerating audio. WHAT'S NEW IN 1.5 • A redesigned home screen: pick up where you left off, and see today's sentences, your streak and your lifetime total at a glance • A richer premium voice with selectable voice styles • Free Sample articles so you can try the flow before adding your own text • Backup & Export: premium audio is included in your device backup when backups are enabled and sufficient backup space is available. Only a SentenceDeck ZIP can import compatible articles and audio on a new device; practice progress is not restored. Exported merged audio is for listening only and cannot be imported • Clearer pricing: each sentence is generated as you practice. The same sentence is charged once and cached for replay with the same premium voice and style settings; changing the premium voice or style may generate it again and use characters again TWO VOICES — ONE IS FREE System voice: built into iOS. Free, offline, unlimited. Premium voice: natural, expressive male and female voices with several speaking styles. Pay only for the sentences you practice; nothing expires. 9 VOICE LANGUAGES English, Chinese (Simplified and Traditional), Japanese, Korean, Spanish, French, Italian, German. The language of your text is detected automatically, or set it yourself. MADE FOR REAL STUDY • Works with any text: articles, dialogues, exam material, notes for a presentation • Each sentence is cached for the selected premium voice and style — generate it once, practice as often as you like • Light, dark and system themes; 10 interface languages • iPhone and iPad PREMIUM VOICE PRICING • 6,000 characters (about 100 sentences) • 30,000 characters (about 500 sentences) • 72,000 characters (about 1,200 sentences) Characters never expire. The App Store shows the local price for your region. Whether you are preparing for IELTS, TOEFL, JLPT or TOPIK, polishing a presentation, or just want to sound more natural, SentenceDeck gives you a focused, repeatable speaking routine from any text you choose. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.kuroneko-cmd.dev/privacy/sentencedeck/

About

Belletra

Features
Read full description

Belletra teaches you language through the sentences that made it beautiful. Every day, one sentence — from Verlaine, Proust, Camus, Saint-Exupéry, Colette, Villon, Hugo. Not textbook language. The words that writers reached for when they needed them most. DEEP READING, NOT DRILLS Every sentence in Belletra is hand-picked and annotated by hand — never generated, never crowdsourced. You see every word broken down, every grammar explained, every cultural echo traced. Tap any word to open it. Read the etymology. Understand why it sits where it does. Then move on — carrying it with you. YOUR OWN ANTHOLOGY Keep the lines that stay with you. Build a personal anthology of the sentences that moved you. Review the words that mattered. ONE SENTENCE A DAY Not streaks. Not points. Not a leaderboard. Just the quiet rhythm of reading one great sentence — and understanding it completely. EVERY LANGUAGE, ONCE French now. Italian, Spanish, Latin, and more coming. Pay once on Lifelong and every language we add is yours — forever. Belletra is for people who want to read, not just communicate. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

SentenceDeck4 screens
Belletra4 screens

Verdict

The call

SentenceDeck and Belletra are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SentenceDeck sells 3 one-off in-app purchases and Belletra sells 3 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
SentenceDeck versus Belletra: the parameters behind the verdict, then further details
ParameterSentenceDeckBelletra
PriceFreeFree
Update frequencyEvery 6 months—
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.4 — better
Further details — not scored
Size10 MB45 MB
Age rating4+4+
Developer奇濂 任Ryonix Labs Inc.

In-app purchases

3 purchases

SentenceDeck

One-time3
  • Credits 100$0.99
  • Credits 500$3.99
  • Credits 1200$7.99
3 purchases

Belletra

Subscriptions2
  • Monthly7 Days trial$5.991 Month
  • Yearly7 Days trial$39.991 Year
One-time1
  • Lifetime$129.00

Questions

Is SentenceDeck free?
SentenceDeck is free to download, with in-app purchases available.
Is Belletra free?
Belletra is free to download, with in-app purchases available.
Do SentenceDeck or Belletra have ads?
Neither SentenceDeck nor Belletra shows ads.

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