Comparison

PEM Diary vs NoiseWake

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

Head to head
About

PEM Diary

This app helps individuals manage post-exertional malaise (PEM) by logging crashes, tracking severity, symptoms, and duration. It provides insights into patterns and creates a shareable record for personal reference or healthcare discussions.

Highlights
  • Log PEM crashes with dates
  • Track severity and symptoms
  • Add contextual notes
  • View trends on timeline/dashboard
  • 100% private local storage
  • Export data as CSV
Features
Read full description

Do you experience episodes of extreme fatigue? PEM Diary helps you log and track post-exertional malaise (PEM) with personal records, including severity, symptoms, and duration. Whether you’re managing ME/CFS (Myalgic Encephalomyelitis/Chronic Fatigue Syndrome) or dealing with unexplained fatigue, this app helps you identify patterns and keep a record for personal reference or discussions with your healthcare provider. FEATURES: - Log PEM crashes with start & end dates - Track severity (1–5 scale) & symptoms - Add notes for additional context - View trends with a timeline & dashboard - 100% private – all data is stored locally on your device and never leaves it unless you export it - Data export - export your collected data as a CSV which is easily shareable with health care professionals or studies Use PEM Diary to track PEM for personal insights or to support medical discussions and diagnosis efforts. Start managing your health more effectively today! PRIVACY & SECURITY Your health data never leaves your device unless you choose to export it. No cloud storage, no data sharing – complete privacy guaranteed. MADE FOR YOU Perfect for: • Tracking PEM patterns • Supporting healthcare discussions • Understanding your energy limits • Building a detailed health record MEDICAL NOTICE PEM Diary is a personal tracking tool. Always consult healthcare professionals for medical advice and treatment decisions. Download now to take control of your energy management journey! Start tracking your PEM episodes!

About

NoiseWake

Features
Read full description

Are you struggling to stay awake during long study sessions, monotonous work tasks, or late-night drives? NoiseWake is your secret weapon against drowsiness when you need to remain alert. Why You Need NoiseWake Battling the Afternoon Slump: When your energy dips during long work hours, NoiseWake keeps you alert with unpredictable audio cues Staying Focused During Monotonous Tasks: Combat the mental fatigue that comes with repetitive work Fighting Highway Hypnosis: Perfect companion for long drives when you need to stay vigilant Extending Productive Study Sessions: Ideal for students pushing through late-night cramming sessions How NoiseWake Works NoiseWake uses the scientifically-proven principle that unexpected sounds trigger your brain's alertness response. The app plays random sounds at unpredictable intervals, creating micro-interruptions that reset your attention and prevent you from drifting off. Key Features Customizable Sound Effects: Choose from various attention-grabbing sounds Flexible Timing Options: Set intervals that match your personal needs Minimal Interface: Simple, distraction-free design that works in the background Countdown Display: Optional timer shows when the next sound will play Full Localization: Available in English and Chinese Don't let drowsiness derail your productivity. Download NoiseWake today and transform unexpected noises into your personal alertness tool!

Screenshots

PEM Diary4 screens
NoiseWake4 screens

Verdict

The call

The clearest difference is price: PEM Diary at Free against NoiseWake's $0.29. On ads, in-app purchases, 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

PEM Diary is free to download; NoiseWake costs $0.29 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 9 level
PEM Diary versus NoiseWake: the parameters behind the verdict, then further details
ParameterPEM DiaryNoiseWake
PriceFree — better$0.29
Rating4.0 (2 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 months—
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 — better16.0
Further details — not scored
Size92 MB3 MB
Age rating17+4+
DeveloperAdd Jam阳 孙

In-app purchases

None

PEM Diary

No in-app purchases

None

NoiseWake

No in-app purchases

Questions

Is PEM Diary free?
PEM Diary is free to download, with no in-app purchases.
Is NoiseWake free?
NoiseWake costs $0.29, with no in-app purchases.
Do PEM Diary or NoiseWake have ads?
Neither PEM Diary nor NoiseWake shows ads.

Other comparisons