NULL Memo vs Pensieve
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NULL Memo
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NULL Memo is a quick capture tool for notes, lists, and memos—simple, ad-free, and free from endless customization. It focuses on what matters most: writing something down before you forget it. ■ BUILT LIKE A REAL TOOL It avoids feature bloat and smart automation, focusing on fast capture and simple organization. Straightforward, consistent, and reliable. ■ STAYS NEAT IN ANY SCENARIO Use it for anything—notes, ideas, to-do lists, shopping lists, reminders. Whatever you put in, the layout stays structured and readable, so pages never feel messy. ■ ORGANIZE WITH PAGES Create pages to separate your contexts (work, personal, shopping, ideas, etc.). It's a lightweight organization that keeps things tidy without turning into a whole system you have to manage. ■ OFFLINE Your memos are stored locally on your device for instant access and control. No ads. No accounts. Just your notes, where they belong. ■ CALM, RESTRAINED VISUALS The design is intentionally quiet and minimal. It’s made to remove unnecessary distractions and stimulation, and focuses on achieving only a single purpose. Never lose a thought again.
Pensieve
Capture your thoughts hands-free using voice. This tool automatically organizes your spoken notes with AI, allowing you to revisit and append them later. Enjoy offline functionality and optional iCloud backups for seamless thought management.
- Voice recording
- Offline speech recognition
- AI auto-organization
- Append recordings
- One-tap reminders
- iCloud backup
- Privacy-focused
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Pensieve is a voice-first thought-capture tool. Named after the Pensieve from Harry Potter — pour your thoughts in and revisit them later. The best way to take notes is to not write notes at all. Just speak. [Key Features] • Record on the Go One tap, no typing. While walking, driving, or whenever inspiration strikes — just say a sentence. • Offline Speech Recognition Built-in SenseVoice model supports Chinese, English, Japanese, Korean and Cantonese. No network needed. Recordings never leave your device. • AI Auto-Organize (Optional) Auto-generated summaries and tags. Tap "Organize" and your scattered thoughts become structured text. AI Organize is optional — you can bring your own provider (DeepSeek, Alibaba DashScope, Groq, etc.) and a clear consent dialog appears the first time. • Append Add follow-up recordings to the same thought. Fragmented thinking from different moments comes together as a complete idea. • One-Tap Reminders Set reminders on important notes. The system pushes a notification at the scheduled time, tap to open the note directly. • iCloud Backup Recordings and notes auto-sync to iCloud. Change phones without losing anything. Completely optional, off by default. • Privacy First No account required. Zero data collection. No ads, no trackers. We have no servers — all data is fully under your control. Supported languages: Simplified Chinese, Traditional Chinese, English, Japanese, Korean.
Screenshots
Verdict
The clearest difference is in-app purchases: Pensieve at none against NULL Memo's 1. Pensieve also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.6). On price and ads 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. NULL Memo sells 1 one-off in-app purchase. Pensieve asks for nothing beyond the download.
| Parameter | NULL Memo | Pensieve |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Daily | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 60 MB | 279 MB |
| Age rating | 4+ | 4+ |
| Developer | Aaron Chan | 林旦 王 |
In-app purchases
NULL Memo
- NULL Memo Pro$2.99
Pensieve
No in-app purchases









