Void vs Retn
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Void
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Void is a simple, distraction-free writing tool that helps you focus on your ideas. With a clean, minimalist design, itβs perfect for jotting down notes, drafting a story, or keeping track of your to-do list. Everything you write stays synced across all your devices and is securely stored with iCloud, so itβs always safe and easy to access. No clutter, no extrasβjust you and your words.
Retn
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Focus on one thing. Keep it forever. In a world full of noise, Retn is your sanctuary for the single most important thought. We believe that multitasking is a myth. To truly remember somethingβto make it part of youβyou must focus on one thing at a time. Retn is not a notepad. It is a ritual for your brain. β THE PHILOSOPHY Your brain needs rhythm, not overload. Retn restricts you to a single active note. You cannot start the next one until you have fully absorbed the current one. This constraint is the most powerful experience we offer. β THE RITUAL OF IMPRINTING 1. Write (Focus) Open the app. A clean, distraction-free canvas awaits. Type your quote, vocabulary, or goal. Pull down to lock it in. 2. Absorb (Imprint) Close the app and live your life. Retn works in the background. - Widgets: Your focus stays visible on your home screen, seeping into your subconscious. - Notifications: Scientifically timed nudges arrive 3 times a day (Morning, Noon, Evening). Just read, acknowledge, and let it settle. 3. Complete (Release) Once the text is etched into your memory, swipe right to destroy it. Feel the satisfaction as it shatters into particles and disappears. 4. Rest (Consolidate) After completion, Retn gives your brain a 24-hour cool-down period. Use this time to let the memory settle. True learning happens during rest. β KEY FEATURES - Hyper-Minimalist Design: Zero clutter. Just you and your text. - Tactile Interactions: Pull-to-save, elastic scrolling, and haptic-rich swipe gestures for a physical feel. - Smart Scheduling: Notifications are delivered at optimal intervals (08:30, 12:30, 20:00) based on retention science. - Home Screen Widgets: Keep your focus comfortably in sight without opening the app. - Archive (Premium): Unlock your history to revisit past imprints. β WHO IS THIS FOR? - Language learners mastering one difficult word at a time. - Thinkers internalizing a life-changing quote. - Goal achievers focusing on a single daily priority. - Anyone tired of complex, bloated productivity tools seeking an essential experience. Don't just take notes. Imprint them. Download Retn and start your first focus today.
Screenshots
Verdict
The clearest difference is price: Retn at Free against Void's $9.99. Retn also leads on update cadence (weekly vs every 3 weeks) and iOS requirement (15.6 vs 17.6). Void's advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Retn is free to download; Void costs $9.99 up front. Retn sells 1 one-off in-app purchase. Void asks for nothing beyond the download.
Void ships an update every 3 weeks, Retn weekly. The most recent releases landed on October 14, 2026 and October 13, 2026 respectively.
| Parameter | Void | Retn |
|---|---|---|
| Price | $9.99 | Free β better |
| Update frequency | Every 3 weeks | Weekly β better |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPad | iPhone, iPad, iPod β better |
| Requires iOS | 17.6 | 15.6 β better |
| Further details β not scored | ||
| Size | 1 MB | 25 MB |
| Age rating | 4+ | 9+ |
| Developer | hsla0001 | Neointro |
In-app purchases
Void
No in-app purchases
Retn
- Unlock Retn Premium$1.99









