IACUBUS vs Stacks
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IACUBUS
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Welcome to IACUBUS! IACUBUS is your essential companion for easily navigating the ILIAS Learning Management System (LMS). Built on the dependable ILIAS PEGASUS open-source platform, this app empowers you to seamlessly access files, folders, and groups directly from your smartphone, even offline.
Stacks
Create flashcards from your own experiences and conversations. This app uses spaced repetition to help you remember vocabulary longer with less study. It supports over 100 languages and offers offline study capabilities.
- Create cards from stories and conversations
- Spaced repetition system (FSRS)
- Offline study mode
- Automatic translations
- Supports over 100 languages
- Romanization for select scripts
- Clean, minimal interface
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Your stories are better. Life's too short to cram from borrowed lists. Stacks turns trips and conversations into cards, then spaced-repetition (FSRS) handles the science. Episodic memory meets spaced repetition. Dream team. Benefits: • Keep momentum anywhere – Study offline on flights, trains, or dead zones. • Stay in sync across devices – Your progress follows you automatically. • Focus without distractions – No ads, just learning. • Create cards in seconds – Automatic translations speed up card creation. • Learn with clearer meanings – Premium DeepL translations offer high accuracy and context. • Remember longer with less study – FSRS schedules reviews at the right time. • Learn the language you care about – Supports over 100 languages. • Crack non-Latin scripts faster – Romanization for select languages like Japanese, Arabic, Russian, and Hindi. • Feel calm while you study – A clean, minimal interface that gets out of the way. Free and Plus Create up to 40 cards for free. Upgrade to Stacks Plus for unlimited cards, DeepL translations, spaced repetition customisation, and more. Perfect for language learners, students, and polyglots who want to study offline, master vocabulary, and remember more with flashcards. Privacy Policy: https://www.thestacksapp.com/privacy Terms of Service: https://www.thestacksapp.com/terms-of-service EUSA: https://www.apple.com/legal/internet-services/itunes/dev/minterms/
Screenshots
Verdict
The clearest difference is in-app purchases: IACUBUS at none against Stacks's 2. IACUBUS also leads on iOS requirement (14.0.0 vs 16.4). On price, update cadence, ads 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. Stacks sells 2 in-app purchases, starting at $9.99 per 3 months. IACUBUS asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.
| Parameter | IACUBUS | Stacks |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 22 MB | 77 MB |
| Age rating | 4+ | 4+ |
| Developer | Jakub Niewelt | Lewis Hoy |
In-app purchases
IACUBUS
No in-app purchases
Stacks
- Stacks+ Quarterly$9.993 Months
- Stacks+ Yearly$27.991 Year
