Postnote vs TheGrey.app
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Postnote
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Postnote is a simple, intuitive note manager built for unmatched speed. Capture your thoughts the moment they arise, with zero friction. With seamless iCloud sync, your ideas stay organized and accessible across all your devices, making it effortless to jot down and review your notes anytime, anywhere.
TheGrey.app
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When the Same Thought Keeps Circling Not a crisis. Not a problem that needs solving. Just the same thought, going around once more, still hovering there. THEGREY exists for this state. When a thought keeps circling with no way out — and you don't need a way out yet. Not meditation. Not therapy. Not a mood tracker. No questions about how you feel. No suggestions. No record. 【 Why do you need THEGREY? 】Not a feature list. The reality you're living right now: • The same thought won't stop before sleep: your body is exhausted but your brain refuses to land, the thought grinding in the dark on repeat. • Walking into a place brings something back: the space itself is the trigger, old memories spiraling again without warning. • A date or anniversary arrives and the thought returns: time's inertia brings regret back automatically, no reason needed. • Shallow breathing, physical tension, thought follows: physiological anxiety feeds mental drain, the thought accelerating with your heartbeat. 【 Three entry points, three sources of circling 】 • THIS DAY | Time-triggered: circular thoughts triggered by time or date. Time seems to stand still. • THE SPACE | Space-triggered: circular thoughts triggered by location or setting. This space won't let the feeling go. • THE BREATH | Rhythm-triggered: circular thoughts triggered by rhythm or stress. The circling that happens between breaths. 【 Seven content invariants, strictly observed 】No second person · No action directive · No future tense · No causal framing · No self-comfort · No shareability design · No implied next step. No journal. No history. No progress report. Enter. Stay. Leave. Built on THE GAP Framework. Compliant with GAP-NLP-1.0.
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Verdict
The clearest difference is update cadence: TheGrey.app at every 3 days against Postnote's monthly. On price, ads, in-app purchases 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. Postnote sells 1 one-off in-app purchase and TheGrey.app sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Postnote ships an update monthly, TheGrey.app every 3 days. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.
| Parameter | Postnote | TheGrey.app |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | dai kawaguchi | Hsieh ChiaMing |
In-app purchases
Postnote
- Unlock note posting limit$1.99
TheGrey.app
- The Grey Platinum$2.99









