BFMeter vs SleepDiary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BFMeter
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BFMeter is a relationship tracking app that helps you see the truth behind your feelings. In just 30 seconds a day, log 3 moments — your mood, what happened, and a tag — to reveal the real state of your relationship. Key Features: • Daily Check-in: Quickly rate your mood, log events, and capture how you feel • Relationship Calendar: See every day's relationship status at a glance • Data & Stats: Track your relationship score trends, highs, and lows • Tag System: Create custom tags to spot recurring patterns • AI Deep Analysis: Get personalized insights powered by intelligent analysis of your emotional data • Passcode Lock: Keep your private journal truly private Who is this for? · You feel "something's off" but can't explain why · You want to stop overthinking and start understanding. · You're trying to decide whether to stay or walk away. · You believe your relationship deserves more than guesswork. Not every relationship needs to change. But every relationship deserves to be seen clearly.
SleepDiary
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SleepDiary is your ultimate night-time companion, designed to help you understand your sleep patterns and sound events completely automatically. Using advanced on-device AI and Apple Health integration, SleepDiary provides deep insights into how well you truly rest. KEY FEATURES: Smart Sound Recording & AI Analysis • Automatically record and categorize sleep sounds: snoring, sleep talking, coughing, and environmental noise. • Cloud-powered AI analysis strictly reviews and precisely labels distinct sleep events. • Listen to your night's highlights in the morning! Sleep Stages & Quality Score • Sync seamlessly with Apple Watch to analyze your sleep stages (Awake, REM, Core, Deep). • Get a comprehensive Daily Sleep Score based on duration, continuity, and recovery metrics. Apple Watch Integration • Track your Heart Rate, Blood Oxygen (SpO2), and HRV directly while you sleep. • Wake up to a detailed summary generated from your wrist. Circadian Rhythm Tracker • Visualize your sleep habits over weeks to find your perfect biological rhythm. • Form better bedtime routines and improve your overall health recovery. Privacy First • Your audio data stays yours. Recordings are kept locally on your device by default, and CloudSync keeps your data secure across your personal iCloud. • No hidden tracking, no data selling. ACHIEVEMENTS & WIDGETS • Unlock sleep achievements as you build healthier bedtime habits. • Convenient Home Screen widgets and Live Activities (Dynamic Island supported) to check your sleep session at a glance. Start tracking tonight and wake up with actionable insights every morning!
Screenshots
Verdict
The clearest difference is device support: SleepDiary at 3 against BFMeter's —. BFMeter's advantage is iOS requirement (16.0 vs 18.6). On price and in-app purchases 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. BFMeter sells 1 one-off in-app purchase and SleepDiary sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | BFMeter | SleepDiary |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 5 days |
| Ads | — | No |
| In-app purchases | Yes | Yes |
| Devices | — | iPhone, iPad, Apple Watch — better |
| Requires iOS | 16.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 4 MB | 4 MB |
| Age rating | 12+ | 4+ |
| Developer | Tomihiro Fushino | 璐 王 |
In-app purchases
BFMeter
- AI Analysis Unlock$3.99
SleepDiary
- 睡眠声音日记 Pro$0.991 Month
- 睡眠声音日记 Pro$4.991 Year
- 睡眠日记 Pro$9.99





