Comparison

NULL Memo vs AI Inbox

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

Head to head
About

NULL Memo

Features
Read full description

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.

About

AI Inbox

Features
Read full description

AI Inbox: Screenshot Actions helps you turn captured information into something you can actually use. Import a screenshot or paste text, run on-device OCR for images, then let AI extract useful cards such as tasks, reminders, money items, ideas, and references. Review each card before it becomes part of your searchable personal library. Designed as a local-first productivity inbox: - Manual screenshot/photo import - Paste text or links - On-device OCR using Apple Vision - Local extraction fallback by default - Optional AI extraction through a user-provided HTTPS backend - AI Inbox Pro Monthly with 1000 hosted AI credits/month - Local fallback and BYO backend processing remain free - Review, confirm, edit, archive, and search cards - Today view for dated tasks and reminders - Local notification support for confirmed reminder cards - Privacy-first MVP: no account, no cloud sync, no embedded model keys Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

NULL Memo4 screens
AI Inbox4 screens

Verdict

The call

The clearest difference is in-app purchases: AI Inbox at none against NULL Memo's 1. On price, ads, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. NULL Memo sells 1 one-off in-app purchase. AI Inbox asks for nothing beyond the download.

Scorecard1 real difference · 5 level
NULL Memo versus AI Inbox: the parameters behind the verdict, then further details
ParameterNULL MemoAI Inbox
PriceFreeFree
Update frequencyDaily—
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhoneiPhone, iPad — better
Requires iOS16.6 — better17.0
Further details — not scored
Size60 MB7 MB
Age rating4+4+
DeveloperAaron ChanYui Pan YAU

In-app purchases

1 purchases

NULL Memo

One-time1
  • NULL Memo Pro$2.99
None

AI Inbox

No in-app purchases

Questions

Is NULL Memo free?
NULL Memo is free to download, with in-app purchases available.
Is AI Inbox free?
AI Inbox is free to download, with no in-app purchases.
Do NULL Memo or AI Inbox have ads?
Neither NULL Memo nor AI Inbox shows ads.

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