Comparison

PEM Diary vs CBT Toolbox

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

CBT Toolbox

Features
Read full description

**Transform Your Mental Wellbeing with CBT Toolbox** CBT Toolbox brings the power of cognitive behavioral therapy to your daily life. This comprehensive collection of 50+ evidence-based CBT skills helps you identify negative thought patterns, manage difficult emotions, and develop healthier behaviors. Whether you're dealing with stress, anxiety, low mood, or simply want to improve your mental resilience, CBT Toolbox provides structured techniques used by therapists worldwide—now available whenever and wherever you need them. **Key Features:** • 50+ detailed CBT skills across five categories: Cognitive, Behavioral, Emotional, Interpersonal, and Mindfulness • Step-by-step guidance for each technique • Interactive practice sessions with progress tracking • Personalized favorites list for quick access to your most useful skills • Beginner to advanced difficulty levels to match your experience • Comprehensive search and filtering options • Professional resources for each skill • Clean, intuitive interface designed for daily use **Why CBT Works:** Cognitive Behavioral Therapy is one of the most researched and effective approaches for improving mental health. By learning to recognize and change unhelpful thought patterns, you can significantly improve your emotional wellbeing and build resilience against future challenges. **Privacy First:** Your mental health journey is personal. CBT Toolbox stores all data locally on your device—no account creation or cloud storage required. **Note:** CBT Toolbox is designed for educational and self-help purposes. It is not a replacement for professional mental health treatment. If you're experiencing severe distress, please consult with a qualified healthcare provider. Download CBT Toolbox today and take a proactive step toward better mental health.

Screenshots

PEM Diary4 screens
CBT Toolbox4 screens

Verdict

The call

The clearest difference is price: PEM Diary at Free against CBT Toolbox's $0.99. PEM Diary also leads on iOS requirement (15.1 vs 18.4). CBT Toolbox's advantage is chart position (#196 vs unranked). On 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

CostPrice · In-app purchases · Ads · Monetization

PEM Diary is free to download; CBT Toolbox costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard3 real differences · 8 level
PEM Diary versus CBT Toolbox: the parameters behind the verdict, then further details
ParameterPEM DiaryCBT Toolbox
PriceFree — better$0.99
Rating4.0 (2 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 months—
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
Best chart rank—#196 — better
DevicesiPhone, iPod — betteriPhone
Requires iOS15.1 — better18.4
Further details — not scored
Size92 MB4 MB
Age rating17+4+
DeveloperAdd JamJack Scott Brothers

In-app purchases

None

PEM Diary

No in-app purchases

None

CBT Toolbox

No in-app purchases

Questions

Is PEM Diary free?
PEM Diary is free to download, with no in-app purchases.
Is CBT Toolbox free?
CBT Toolbox costs $0.99, with no in-app purchases.
Do PEM Diary or CBT Toolbox have ads?
Neither PEM Diary nor CBT Toolbox shows ads.

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